| Message ID | 1412181777-6388-2-git-send-email-a.kesavan@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Abhilash Kesavan wrote: > Hi, Sorry for late response. > Remove symbols SERIAL_SAMSUNG_UARTS_4 and SERIAL_SAMSUNG_UARTS which > select the number of UART ports available on the SoC. Replace the usage > of SERIAL_SAMSUNG_UARTS in the serial driver with the maximum number of Well, as you know the number of uart ports are different on each Samsung SoCs so I don't think just using maximum number of uart ports are possible for new exynos7 SoC at this moment. > UART ports possible. Removal of these symbols also helps in Exynos7 > serial enablement. > > Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> > Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > --- > drivers/tty/serial/Kconfig | 16 ---------------- > drivers/tty/serial/samsung.c | 11 +++-------- > drivers/tty/serial/samsung.h | 5 ++++- > 3 files changed, 7 insertions(+), 25 deletions(-) > > diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig > index 81f6ee7..9fc9092 100644 > --- a/drivers/tty/serial/Kconfig > +++ b/drivers/tty/serial/Kconfig > @@ -247,22 +247,6 @@ config SERIAL_SAMSUNG > provide all of these ports, depending on how the serial port > pins are configured. > > -config SERIAL_SAMSUNG_UARTS_4 > - bool > - depends on PLAT_SAMSUNG > - default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442) > - help > - Internal node for the common case of 4 Samsung compatible UARTs > - > -config SERIAL_SAMSUNG_UARTS > - int > - depends on PLAT_SAMSUNG > - default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416 > - default 3 > - help > - Select the number of available UART ports for the Samsung S3C > - serial driver > - > config SERIAL_SAMSUNG_DEBUG > bool "Samsung SoC serial debug" > depends on SERIAL_SAMSUNG && DEBUG_LL > diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c > index c78f43a..ba04c6d 100644 > --- a/drivers/tty/serial/samsung.c > +++ b/drivers/tty/serial/samsung.c > @@ -962,14 +962,14 @@ static struct uart_ops s3c24xx_serial_ops = { > static struct uart_driver s3c24xx_uart_drv = { > .owner = THIS_MODULE, > .driver_name = "s3c2410_serial", > - .nr = CONFIG_SERIAL_SAMSUNG_UARTS, > + .nr = MAX_SAMSUNG_UARTS, > .cons = S3C24XX_SERIAL_CONSOLE, > .dev_name = S3C24XX_SERIAL_NAME, > .major = S3C24XX_SERIAL_MAJOR, > .minor = S3C24XX_SERIAL_MINOR, > }; > > -static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS] = { > +static struct s3c24xx_uart_port s3c24xx_serial_ports[MAX_SAMSUNG_UARTS] = { > [0] = { > .port = { > .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[0].port.lock), > @@ -992,8 +992,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS > .line = 1, > } > }, > -#if CONFIG_SERIAL_SAMSUNG_UARTS > 2 > - > [2] = { > .port = { > .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[2].port.lock), > @@ -1005,8 +1003,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS > .line = 2, > } > }, > -#endif > -#if CONFIG_SERIAL_SAMSUNG_UARTS > 3 > [3] = { > .port = { > .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[3].port.lock), > @@ -1018,7 +1014,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS > .line = 3, > } > } > -#endif > }; > > /* s3c24xx_serial_resetport > @@ -1590,7 +1585,7 @@ s3c24xx_serial_console_setup(struct console *co, char *options) > > /* is this a valid port */ > > - if (co->index == -1 || co->index >= CONFIG_SERIAL_SAMSUNG_UARTS) > + if (co->index == -1 || co->index >= MAX_SAMSUNG_UARTS) If we use max number, second condition is not required... > co->index = 0; > > port = &s3c24xx_serial_ports[co->index].port; > diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h > index eb071dd..484b49e 100644 > --- a/drivers/tty/serial/samsung.h > +++ b/drivers/tty/serial/samsung.h > @@ -1,6 +1,9 @@ > #ifndef __SAMSUNG_H > #define __SAMSUNG_H > > +/* Maximum UART ports available */ > +#define MAX_SAMSUNG_UARTS 4 If there is a Samsung SoC having 5 UARTS, we need to update? And hmm...maybe we need to keep the useless array sometimes... > + > /* > * Driver for Samsung SoC onboard UARTs. > * > @@ -38,7 +41,7 @@ struct s3c24xx_uart_info { > struct s3c24xx_serial_drv_data { > struct s3c24xx_uart_info *info; > struct s3c2410_uartcfg *def_cfg; > - unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; > + unsigned int fifosize[MAX_SAMSUNG_UARTS]; > }; > > struct s3c24xx_uart_port { > -- > 1.7.9.5
Hi Kukjin On Tue, Oct 28, 2014 at 4:01 PM, Kukjin Kim <kgene@kernel.org> wrote: > Abhilash Kesavan wrote: >> > Hi, > > Sorry for late response. > >> Remove symbols SERIAL_SAMSUNG_UARTS_4 and SERIAL_SAMSUNG_UARTS which >> select the number of UART ports available on the SoC. Replace the usage >> of SERIAL_SAMSUNG_UARTS in the serial driver with the maximum number of > > Well, as you know the number of uart ports are different on each Samsung SoCs > so I don't think just using maximum number of uart ports are possible for new > exynos7 SoC at this moment. Thanks for the review. The main reason for me sending this patch was so that we may be able to re-use the serial driver on arm64 based Exynos7 too. The two symbols mentioned above which depend on PLAT_SAMSUNG prevent this. I initially sent a patch which changed the dependency to SERIAL_SAMSUNG for these 2 symbols. However, Tomasz suggested that a clean-up of these two symbols would be a better option. Please see the discussion of the previous version here: https://lkml.org/lkml/2014/9/29/702 Can you please let me know if the previous version is acceptable ? > >> UART ports possible. Removal of these symbols also helps in Exynos7 >> serial enablement. >> >> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> >> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> >> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> >> --- >> drivers/tty/serial/Kconfig | 16 ---------------- >> drivers/tty/serial/samsung.c | 11 +++-------- >> drivers/tty/serial/samsung.h | 5 ++++- >> 3 files changed, 7 insertions(+), 25 deletions(-) >> >> diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig >> index 81f6ee7..9fc9092 100644 >> --- a/drivers/tty/serial/Kconfig >> +++ b/drivers/tty/serial/Kconfig >> @@ -247,22 +247,6 @@ config SERIAL_SAMSUNG >> provide all of these ports, depending on how the serial port >> pins are configured. >> >> -config SERIAL_SAMSUNG_UARTS_4 >> - bool >> - depends on PLAT_SAMSUNG >> - default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442) >> - help >> - Internal node for the common case of 4 Samsung compatible UARTs >> - >> -config SERIAL_SAMSUNG_UARTS >> - int >> - depends on PLAT_SAMSUNG >> - default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416 >> - default 3 >> - help >> - Select the number of available UART ports for the Samsung S3C >> - serial driver >> - >> config SERIAL_SAMSUNG_DEBUG >> bool "Samsung SoC serial debug" >> depends on SERIAL_SAMSUNG && DEBUG_LL >> diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c >> index c78f43a..ba04c6d 100644 >> --- a/drivers/tty/serial/samsung.c >> +++ b/drivers/tty/serial/samsung.c >> @@ -962,14 +962,14 @@ static struct uart_ops s3c24xx_serial_ops = { >> static struct uart_driver s3c24xx_uart_drv = { >> .owner = THIS_MODULE, >> .driver_name = "s3c2410_serial", >> - .nr = CONFIG_SERIAL_SAMSUNG_UARTS, >> + .nr = MAX_SAMSUNG_UARTS, >> .cons = S3C24XX_SERIAL_CONSOLE, >> .dev_name = S3C24XX_SERIAL_NAME, >> .major = S3C24XX_SERIAL_MAJOR, >> .minor = S3C24XX_SERIAL_MINOR, >> }; >> >> -static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS] = { >> +static struct s3c24xx_uart_port s3c24xx_serial_ports[MAX_SAMSUNG_UARTS] = { >> [0] = { >> .port = { >> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[0].port.lock), >> @@ -992,8 +992,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >> .line = 1, >> } >> }, >> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 2 >> - >> [2] = { >> .port = { >> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[2].port.lock), >> @@ -1005,8 +1003,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >> .line = 2, >> } >> }, >> -#endif >> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 3 >> [3] = { >> .port = { >> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[3].port.lock), >> @@ -1018,7 +1014,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >> .line = 3, >> } >> } >> -#endif >> }; >> >> /* s3c24xx_serial_resetport >> @@ -1590,7 +1585,7 @@ s3c24xx_serial_console_setup(struct console *co, char *options) >> >> /* is this a valid port */ >> >> - if (co->index == -1 || co->index >= CONFIG_SERIAL_SAMSUNG_UARTS) >> + if (co->index == -1 || co->index >= MAX_SAMSUNG_UARTS) > > If we use max number, second condition is not required... > >> co->index = 0; >> >> port = &s3c24xx_serial_ports[co->index].port; >> diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h >> index eb071dd..484b49e 100644 >> --- a/drivers/tty/serial/samsung.h >> +++ b/drivers/tty/serial/samsung.h >> @@ -1,6 +1,9 @@ >> #ifndef __SAMSUNG_H >> #define __SAMSUNG_H >> >> +/* Maximum UART ports available */ >> +#define MAX_SAMSUNG_UARTS 4 > > If there is a Samsung SoC having 5 UARTS, we need to update? Yes, we would need to update the MAX_SAMSUNG_UARTS define for a newer SoC with 5 uart ports but even without this patch we would have to modify the SERIAL_SAMSUNG_UARTS symbol to handle 5 ports. > > And hmm...maybe we need to keep the useless array sometimes... Yes, for the 24xx series with 3 uart ports we would. Regards, Abhilash > >> + >> /* >> * Driver for Samsung SoC onboard UARTs. >> * >> @@ -38,7 +41,7 @@ struct s3c24xx_uart_info { >> struct s3c24xx_serial_drv_data { >> struct s3c24xx_uart_info *info; >> struct s3c2410_uartcfg *def_cfg; >> - unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; >> + unsigned int fifosize[MAX_SAMSUNG_UARTS]; >> }; >> >> struct s3c24xx_uart_port { >> -- >> 1.7.9.5 > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Hi Kukjin, On Tue, Oct 28, 2014 at 5:56 PM, Abhilash Kesavan <kesavan.abhilash@gmail.com> wrote: > Hi Kukjin > > On Tue, Oct 28, 2014 at 4:01 PM, Kukjin Kim <kgene@kernel.org> wrote: >> Abhilash Kesavan wrote: >>> >> Hi, >> >> Sorry for late response. >> >>> Remove symbols SERIAL_SAMSUNG_UARTS_4 and SERIAL_SAMSUNG_UARTS which >>> select the number of UART ports available on the SoC. Replace the usage >>> of SERIAL_SAMSUNG_UARTS in the serial driver with the maximum number of >> >> Well, as you know the number of uart ports are different on each Samsung SoCs >> so I don't think just using maximum number of uart ports are possible for new >> exynos7 SoC at this moment. > > Thanks for the review. > The main reason for me sending this patch was so that we may be able > to re-use the serial driver on arm64 based Exynos7 too. The two > symbols mentioned above which depend on PLAT_SAMSUNG prevent this. I > initially sent a patch which changed the dependency to SERIAL_SAMSUNG > for these 2 symbols. However, Tomasz suggested that a clean-up of > these two symbols would be a better option. > > Please see the discussion of the previous version here: > https://lkml.org/lkml/2014/9/29/702 > > Can you please let me know if the previous version is acceptable ? Kukjin, can you please indicate the approach you would like me to take. Without this serial support is blocked on Exynos7. Thanks, Abhilash > >> >>> UART ports possible. Removal of these symbols also helps in Exynos7 >>> serial enablement. >>> >>> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> >>> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> >>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> >>> --- >>> drivers/tty/serial/Kconfig | 16 ---------------- >>> drivers/tty/serial/samsung.c | 11 +++-------- >>> drivers/tty/serial/samsung.h | 5 ++++- >>> 3 files changed, 7 insertions(+), 25 deletions(-) >>> >>> diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig >>> index 81f6ee7..9fc9092 100644 >>> --- a/drivers/tty/serial/Kconfig >>> +++ b/drivers/tty/serial/Kconfig >>> @@ -247,22 +247,6 @@ config SERIAL_SAMSUNG >>> provide all of these ports, depending on how the serial port >>> pins are configured. >>> >>> -config SERIAL_SAMSUNG_UARTS_4 >>> - bool >>> - depends on PLAT_SAMSUNG >>> - default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442) >>> - help >>> - Internal node for the common case of 4 Samsung compatible UARTs >>> - >>> -config SERIAL_SAMSUNG_UARTS >>> - int >>> - depends on PLAT_SAMSUNG >>> - default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416 >>> - default 3 >>> - help >>> - Select the number of available UART ports for the Samsung S3C >>> - serial driver >>> - >>> config SERIAL_SAMSUNG_DEBUG >>> bool "Samsung SoC serial debug" >>> depends on SERIAL_SAMSUNG && DEBUG_LL >>> diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c >>> index c78f43a..ba04c6d 100644 >>> --- a/drivers/tty/serial/samsung.c >>> +++ b/drivers/tty/serial/samsung.c >>> @@ -962,14 +962,14 @@ static struct uart_ops s3c24xx_serial_ops = { >>> static struct uart_driver s3c24xx_uart_drv = { >>> .owner = THIS_MODULE, >>> .driver_name = "s3c2410_serial", >>> - .nr = CONFIG_SERIAL_SAMSUNG_UARTS, >>> + .nr = MAX_SAMSUNG_UARTS, >>> .cons = S3C24XX_SERIAL_CONSOLE, >>> .dev_name = S3C24XX_SERIAL_NAME, >>> .major = S3C24XX_SERIAL_MAJOR, >>> .minor = S3C24XX_SERIAL_MINOR, >>> }; >>> >>> -static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS] = { >>> +static struct s3c24xx_uart_port s3c24xx_serial_ports[MAX_SAMSUNG_UARTS] = { >>> [0] = { >>> .port = { >>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[0].port.lock), >>> @@ -992,8 +992,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>> .line = 1, >>> } >>> }, >>> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 2 >>> - >>> [2] = { >>> .port = { >>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[2].port.lock), >>> @@ -1005,8 +1003,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>> .line = 2, >>> } >>> }, >>> -#endif >>> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 3 >>> [3] = { >>> .port = { >>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[3].port.lock), >>> @@ -1018,7 +1014,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>> .line = 3, >>> } >>> } >>> -#endif >>> }; >>> >>> /* s3c24xx_serial_resetport >>> @@ -1590,7 +1585,7 @@ s3c24xx_serial_console_setup(struct console *co, char *options) >>> >>> /* is this a valid port */ >>> >>> - if (co->index == -1 || co->index >= CONFIG_SERIAL_SAMSUNG_UARTS) >>> + if (co->index == -1 || co->index >= MAX_SAMSUNG_UARTS) >> >> If we use max number, second condition is not required... >> >>> co->index = 0; >>> >>> port = &s3c24xx_serial_ports[co->index].port; >>> diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h >>> index eb071dd..484b49e 100644 >>> --- a/drivers/tty/serial/samsung.h >>> +++ b/drivers/tty/serial/samsung.h >>> @@ -1,6 +1,9 @@ >>> #ifndef __SAMSUNG_H >>> #define __SAMSUNG_H >>> >>> +/* Maximum UART ports available */ >>> +#define MAX_SAMSUNG_UARTS 4 >> >> If there is a Samsung SoC having 5 UARTS, we need to update? > > Yes, we would need to update the MAX_SAMSUNG_UARTS define for a newer > SoC with 5 uart ports but even without this patch we would have to > modify the SERIAL_SAMSUNG_UARTS symbol to handle 5 ports. >> >> And hmm...maybe we need to keep the useless array sometimes... > > Yes, for the 24xx series with 3 uart ports we would. > > Regards, > Abhilash >> >>> + >>> /* >>> * Driver for Samsung SoC onboard UARTs. >>> * >>> @@ -38,7 +41,7 @@ struct s3c24xx_uart_info { >>> struct s3c24xx_serial_drv_data { >>> struct s3c24xx_uart_info *info; >>> struct s3c2410_uartcfg *def_cfg; >>> - unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; >>> + unsigned int fifosize[MAX_SAMSUNG_UARTS]; >>> }; >>> >>> struct s3c24xx_uart_port { >>> -- >>> 1.7.9.5 >> >> >> _______________________________________________ >> linux-arm-kernel mailing list >> linux-arm-kernel@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Hello Kukjin, On Fri, Oct 31, 2014 at 8:06 AM, Abhilash Kesavan <kesavan.abhilash@gmail.com> wrote: > Hi Kukjin, > > On Tue, Oct 28, 2014 at 5:56 PM, Abhilash Kesavan > <kesavan.abhilash@gmail.com> wrote: >> Hi Kukjin >> >> On Tue, Oct 28, 2014 at 4:01 PM, Kukjin Kim <kgene@kernel.org> wrote: >>> Abhilash Kesavan wrote: >>>> >>> Hi, >>> >>> Sorry for late response. >>> >>>> Remove symbols SERIAL_SAMSUNG_UARTS_4 and SERIAL_SAMSUNG_UARTS which >>>> select the number of UART ports available on the SoC. Replace the usage >>>> of SERIAL_SAMSUNG_UARTS in the serial driver with the maximum number of >>> >>> Well, as you know the number of uart ports are different on each Samsung SoCs >>> so I don't think just using maximum number of uart ports are possible for new >>> exynos7 SoC at this moment. >> >> Thanks for the review. >> The main reason for me sending this patch was so that we may be able >> to re-use the serial driver on arm64 based Exynos7 too. The two >> symbols mentioned above which depend on PLAT_SAMSUNG prevent this. I >> initially sent a patch which changed the dependency to SERIAL_SAMSUNG >> for these 2 symbols. However, Tomasz suggested that a clean-up of >> these two symbols would be a better option. >> >> Please see the discussion of the previous version here: >> https://lkml.org/lkml/2014/9/29/702 >> >> Can you please let me know if the previous version is acceptable ? > > Kukjin, can you please indicate the approach you would like me to > take. Without this serial support is blocked on Exynos7. Gentle reminder on this. Abhilash > > Thanks, > Abhilash >> >>> >>>> UART ports possible. Removal of these symbols also helps in Exynos7 >>>> serial enablement. >>>> >>>> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> >>>> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> >>>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> >>>> --- >>>> drivers/tty/serial/Kconfig | 16 ---------------- >>>> drivers/tty/serial/samsung.c | 11 +++-------- >>>> drivers/tty/serial/samsung.h | 5 ++++- >>>> 3 files changed, 7 insertions(+), 25 deletions(-) >>>> >>>> diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig >>>> index 81f6ee7..9fc9092 100644 >>>> --- a/drivers/tty/serial/Kconfig >>>> +++ b/drivers/tty/serial/Kconfig >>>> @@ -247,22 +247,6 @@ config SERIAL_SAMSUNG >>>> provide all of these ports, depending on how the serial port >>>> pins are configured. >>>> >>>> -config SERIAL_SAMSUNG_UARTS_4 >>>> - bool >>>> - depends on PLAT_SAMSUNG >>>> - default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442) >>>> - help >>>> - Internal node for the common case of 4 Samsung compatible UARTs >>>> - >>>> -config SERIAL_SAMSUNG_UARTS >>>> - int >>>> - depends on PLAT_SAMSUNG >>>> - default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416 >>>> - default 3 >>>> - help >>>> - Select the number of available UART ports for the Samsung S3C >>>> - serial driver >>>> - >>>> config SERIAL_SAMSUNG_DEBUG >>>> bool "Samsung SoC serial debug" >>>> depends on SERIAL_SAMSUNG && DEBUG_LL >>>> diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c >>>> index c78f43a..ba04c6d 100644 >>>> --- a/drivers/tty/serial/samsung.c >>>> +++ b/drivers/tty/serial/samsung.c >>>> @@ -962,14 +962,14 @@ static struct uart_ops s3c24xx_serial_ops = { >>>> static struct uart_driver s3c24xx_uart_drv = { >>>> .owner = THIS_MODULE, >>>> .driver_name = "s3c2410_serial", >>>> - .nr = CONFIG_SERIAL_SAMSUNG_UARTS, >>>> + .nr = MAX_SAMSUNG_UARTS, >>>> .cons = S3C24XX_SERIAL_CONSOLE, >>>> .dev_name = S3C24XX_SERIAL_NAME, >>>> .major = S3C24XX_SERIAL_MAJOR, >>>> .minor = S3C24XX_SERIAL_MINOR, >>>> }; >>>> >>>> -static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS] = { >>>> +static struct s3c24xx_uart_port s3c24xx_serial_ports[MAX_SAMSUNG_UARTS] = { >>>> [0] = { >>>> .port = { >>>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[0].port.lock), >>>> @@ -992,8 +992,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>>> .line = 1, >>>> } >>>> }, >>>> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 2 >>>> - >>>> [2] = { >>>> .port = { >>>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[2].port.lock), >>>> @@ -1005,8 +1003,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>>> .line = 2, >>>> } >>>> }, >>>> -#endif >>>> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 3 >>>> [3] = { >>>> .port = { >>>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[3].port.lock), >>>> @@ -1018,7 +1014,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>>> .line = 3, >>>> } >>>> } >>>> -#endif >>>> }; >>>> >>>> /* s3c24xx_serial_resetport >>>> @@ -1590,7 +1585,7 @@ s3c24xx_serial_console_setup(struct console *co, char *options) >>>> >>>> /* is this a valid port */ >>>> >>>> - if (co->index == -1 || co->index >= CONFIG_SERIAL_SAMSUNG_UARTS) >>>> + if (co->index == -1 || co->index >= MAX_SAMSUNG_UARTS) >>> >>> If we use max number, second condition is not required... >>> >>>> co->index = 0; >>>> >>>> port = &s3c24xx_serial_ports[co->index].port; >>>> diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h >>>> index eb071dd..484b49e 100644 >>>> --- a/drivers/tty/serial/samsung.h >>>> +++ b/drivers/tty/serial/samsung.h >>>> @@ -1,6 +1,9 @@ >>>> #ifndef __SAMSUNG_H >>>> #define __SAMSUNG_H >>>> >>>> +/* Maximum UART ports available */ >>>> +#define MAX_SAMSUNG_UARTS 4 >>> >>> If there is a Samsung SoC having 5 UARTS, we need to update? >> >> Yes, we would need to update the MAX_SAMSUNG_UARTS define for a newer >> SoC with 5 uart ports but even without this patch we would have to >> modify the SERIAL_SAMSUNG_UARTS symbol to handle 5 ports. >>> >>> And hmm...maybe we need to keep the useless array sometimes... >> >> Yes, for the 24xx series with 3 uart ports we would. >> >> Regards, >> Abhilash >>> >>>> + >>>> /* >>>> * Driver for Samsung SoC onboard UARTs. >>>> * >>>> @@ -38,7 +41,7 @@ struct s3c24xx_uart_info { >>>> struct s3c24xx_serial_drv_data { >>>> struct s3c24xx_uart_info *info; >>>> struct s3c2410_uartcfg *def_cfg; >>>> - unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; >>>> + unsigned int fifosize[MAX_SAMSUNG_UARTS]; >>>> }; >>>> >>>> struct s3c24xx_uart_port { >>>> -- >>>> 1.7.9.5 >>> >>> >>> _______________________________________________ >>> linux-arm-kernel mailing list >>> linux-arm-kernel@lists.infradead.org >>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
On Mon, Nov 3, 2014 at 1:51 PM, Abhilash Kesavan <kesavan.abhilash@gmail.com> wrote: > Hello Kukjin, > > On Fri, Oct 31, 2014 at 8:06 AM, Abhilash Kesavan > <kesavan.abhilash@gmail.com> wrote: >> Hi Kukjin, >> >> On Tue, Oct 28, 2014 at 5:56 PM, Abhilash Kesavan >> <kesavan.abhilash@gmail.com> wrote: >>> Hi Kukjin >>> >>> On Tue, Oct 28, 2014 at 4:01 PM, Kukjin Kim <kgene@kernel.org> wrote: >>>> Abhilash Kesavan wrote: >>>>> >>>> Hi, >>>> >>>> Sorry for late response. >>>> >>>>> Remove symbols SERIAL_SAMSUNG_UARTS_4 and SERIAL_SAMSUNG_UARTS which >>>>> select the number of UART ports available on the SoC. Replace the usage >>>>> of SERIAL_SAMSUNG_UARTS in the serial driver with the maximum number of >>>> >>>> Well, as you know the number of uart ports are different on each Samsung SoCs >>>> so I don't think just using maximum number of uart ports are possible for new >>>> exynos7 SoC at this moment. >>> >>> Thanks for the review. >>> The main reason for me sending this patch was so that we may be able >>> to re-use the serial driver on arm64 based Exynos7 too. The two >>> symbols mentioned above which depend on PLAT_SAMSUNG prevent this. I >>> initially sent a patch which changed the dependency to SERIAL_SAMSUNG >>> for these 2 symbols. However, Tomasz suggested that a clean-up of >>> these two symbols would be a better option. >>> >>> Please see the discussion of the previous version here: >>> https://lkml.org/lkml/2014/9/29/702 >>> >>> Can you please let me know if the previous version is acceptable ? >> >> Kukjin, can you please indicate the approach you would like me to >> take. Without this serial support is blocked on Exynos7. > > Gentle reminder on this. Hi Kukjin, I don't mean to nag, but this another reminder to review this. Please let me know if you are too busy to have a look at this or require some more inputs from me. Regards, Abhilash > > Abhilash >> >> Thanks, >> Abhilash >>> >>>> >>>>> UART ports possible. Removal of these symbols also helps in Exynos7 >>>>> serial enablement. >>>>> >>>>> Signed-off-by: Abhilash Kesavan <a.kesavan@samsung.com> >>>>> Reviewed-by: Tomasz Figa <tomasz.figa@gmail.com> >>>>> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> >>>>> --- >>>>> drivers/tty/serial/Kconfig | 16 ---------------- >>>>> drivers/tty/serial/samsung.c | 11 +++-------- >>>>> drivers/tty/serial/samsung.h | 5 ++++- >>>>> 3 files changed, 7 insertions(+), 25 deletions(-) >>>>> >>>>> diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig >>>>> index 81f6ee7..9fc9092 100644 >>>>> --- a/drivers/tty/serial/Kconfig >>>>> +++ b/drivers/tty/serial/Kconfig >>>>> @@ -247,22 +247,6 @@ config SERIAL_SAMSUNG >>>>> provide all of these ports, depending on how the serial port >>>>> pins are configured. >>>>> >>>>> -config SERIAL_SAMSUNG_UARTS_4 >>>>> - bool >>>>> - depends on PLAT_SAMSUNG >>>>> - default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442) >>>>> - help >>>>> - Internal node for the common case of 4 Samsung compatible UARTs >>>>> - >>>>> -config SERIAL_SAMSUNG_UARTS >>>>> - int >>>>> - depends on PLAT_SAMSUNG >>>>> - default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416 >>>>> - default 3 >>>>> - help >>>>> - Select the number of available UART ports for the Samsung S3C >>>>> - serial driver >>>>> - >>>>> config SERIAL_SAMSUNG_DEBUG >>>>> bool "Samsung SoC serial debug" >>>>> depends on SERIAL_SAMSUNG && DEBUG_LL >>>>> diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c >>>>> index c78f43a..ba04c6d 100644 >>>>> --- a/drivers/tty/serial/samsung.c >>>>> +++ b/drivers/tty/serial/samsung.c >>>>> @@ -962,14 +962,14 @@ static struct uart_ops s3c24xx_serial_ops = { >>>>> static struct uart_driver s3c24xx_uart_drv = { >>>>> .owner = THIS_MODULE, >>>>> .driver_name = "s3c2410_serial", >>>>> - .nr = CONFIG_SERIAL_SAMSUNG_UARTS, >>>>> + .nr = MAX_SAMSUNG_UARTS, >>>>> .cons = S3C24XX_SERIAL_CONSOLE, >>>>> .dev_name = S3C24XX_SERIAL_NAME, >>>>> .major = S3C24XX_SERIAL_MAJOR, >>>>> .minor = S3C24XX_SERIAL_MINOR, >>>>> }; >>>>> >>>>> -static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS] = { >>>>> +static struct s3c24xx_uart_port s3c24xx_serial_ports[MAX_SAMSUNG_UARTS] = { >>>>> [0] = { >>>>> .port = { >>>>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[0].port.lock), >>>>> @@ -992,8 +992,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>>>> .line = 1, >>>>> } >>>>> }, >>>>> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 2 >>>>> - >>>>> [2] = { >>>>> .port = { >>>>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[2].port.lock), >>>>> @@ -1005,8 +1003,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>>>> .line = 2, >>>>> } >>>>> }, >>>>> -#endif >>>>> -#if CONFIG_SERIAL_SAMSUNG_UARTS > 3 >>>>> [3] = { >>>>> .port = { >>>>> .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[3].port.lock), >>>>> @@ -1018,7 +1014,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS >>>>> .line = 3, >>>>> } >>>>> } >>>>> -#endif >>>>> }; >>>>> >>>>> /* s3c24xx_serial_resetport >>>>> @@ -1590,7 +1585,7 @@ s3c24xx_serial_console_setup(struct console *co, char *options) >>>>> >>>>> /* is this a valid port */ >>>>> >>>>> - if (co->index == -1 || co->index >= CONFIG_SERIAL_SAMSUNG_UARTS) >>>>> + if (co->index == -1 || co->index >= MAX_SAMSUNG_UARTS) >>>> >>>> If we use max number, second condition is not required... >>>> >>>>> co->index = 0; >>>>> >>>>> port = &s3c24xx_serial_ports[co->index].port; >>>>> diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h >>>>> index eb071dd..484b49e 100644 >>>>> --- a/drivers/tty/serial/samsung.h >>>>> +++ b/drivers/tty/serial/samsung.h >>>>> @@ -1,6 +1,9 @@ >>>>> #ifndef __SAMSUNG_H >>>>> #define __SAMSUNG_H >>>>> >>>>> +/* Maximum UART ports available */ >>>>> +#define MAX_SAMSUNG_UARTS 4 >>>> >>>> If there is a Samsung SoC having 5 UARTS, we need to update? >>> >>> Yes, we would need to update the MAX_SAMSUNG_UARTS define for a newer >>> SoC with 5 uart ports but even without this patch we would have to >>> modify the SERIAL_SAMSUNG_UARTS symbol to handle 5 ports. >>>> >>>> And hmm...maybe we need to keep the useless array sometimes... >>> >>> Yes, for the 24xx series with 3 uart ports we would. >>> >>> Regards, >>> Abhilash >>>> >>>>> + >>>>> /* >>>>> * Driver for Samsung SoC onboard UARTs. >>>>> * >>>>> @@ -38,7 +41,7 @@ struct s3c24xx_uart_info { >>>>> struct s3c24xx_serial_drv_data { >>>>> struct s3c24xx_uart_info *info; >>>>> struct s3c2410_uartcfg *def_cfg; >>>>> - unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; >>>>> + unsigned int fifosize[MAX_SAMSUNG_UARTS]; >>>>> }; >>>>> >>>>> struct s3c24xx_uart_port { >>>>> -- >>>>> 1.7.9.5 >>>> >>>> >>>> _______________________________________________ >>>> linux-arm-kernel mailing list >>>> linux-arm-kernel@lists.infradead.org >>>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
Abhilash Kesavan wrote: > > On Mon, Nov 3, 2014 at 1:51 PM, Abhilash Kesavan > <kesavan.abhilash@gmail.com> wrote: > > Hello Kukjin, > > > > On Fri, Oct 31, 2014 at 8:06 AM, Abhilash Kesavan > > <kesavan.abhilash@gmail.com> wrote: > >> Hi Kukjin, > >> > >> On Tue, Oct 28, 2014 at 5:56 PM, Abhilash Kesavan > >> <kesavan.abhilash@gmail.com> wrote: > >>> Hi Kukjin > >>> > >>> On Tue, Oct 28, 2014 at 4:01 PM, Kukjin Kim <kgene@kernel.org> wrote: > >>>> Abhilash Kesavan wrote: > >>>>> > >>>> Hi, > >>>> > >>>> Sorry for late response. > >>>> > >>>>> Remove symbols SERIAL_SAMSUNG_UARTS_4 and SERIAL_SAMSUNG_UARTS which > >>>>> select the number of UART ports available on the SoC. Replace the usage > >>>>> of SERIAL_SAMSUNG_UARTS in the serial driver with the maximum number of > >>>> > >>>> Well, as you know the number of uart ports are different on each Samsung SoCs > >>>> so I don't think just using maximum number of uart ports are possible for new > >>>> exynos7 SoC at this moment. > >>> > >>> Thanks for the review. > >>> The main reason for me sending this patch was so that we may be able > >>> to re-use the serial driver on arm64 based Exynos7 too. The two > >>> symbols mentioned above which depend on PLAT_SAMSUNG prevent this. I > >>> initially sent a patch which changed the dependency to SERIAL_SAMSUNG > >>> for these 2 symbols. However, Tomasz suggested that a clean-up of > >>> these two symbols would be a better option. > >>> > >>> Please see the discussion of the previous version here: > >>> https://lkml.org/lkml/2014/9/29/702 > >>> > >>> Can you please let me know if the previous version is acceptable ? > >> > >> Kukjin, can you please indicate the approach you would like me to > >> take. Without this serial support is blocked on Exynos7. > > > > Gentle reminder on this. > > Hi Kukjin, > Hi Abhilash, > I don't mean to nag, but this another reminder to review this. Yeah, it's no problem for me ;) > Please let me know if you are too busy to have a look at this or > require some more inputs from me. > Since I'm still having some objection on 2nd version, how about keeping current config options for serial for now and changing the dependency to SERIAL_SAMSUNG? And if required later, we can look into removal these config options later. Thanks, Kukjin
Hi Kukjin, On Sun, Nov 9, 2014 at 10:09 AM, Kukjin Kim <kgene@kernel.org> wrote: > Abhilash Kesavan wrote: >> >> On Mon, Nov 3, 2014 at 1:51 PM, Abhilash Kesavan >> <kesavan.abhilash@gmail.com> wrote: >> > Hello Kukjin, >> > >> > On Fri, Oct 31, 2014 at 8:06 AM, Abhilash Kesavan >> > <kesavan.abhilash@gmail.com> wrote: >> >> Hi Kukjin, >> >> >> >> On Tue, Oct 28, 2014 at 5:56 PM, Abhilash Kesavan >> >> <kesavan.abhilash@gmail.com> wrote: >> >>> Hi Kukjin >> >>> >> >>> On Tue, Oct 28, 2014 at 4:01 PM, Kukjin Kim <kgene@kernel.org> wrote: >> >>>> Abhilash Kesavan wrote: >> >>>>> >> >>>> Hi, >> >>>> >> >>>> Sorry for late response. >> >>>> >> >>>>> Remove symbols SERIAL_SAMSUNG_UARTS_4 and SERIAL_SAMSUNG_UARTS which >> >>>>> select the number of UART ports available on the SoC. Replace the usage >> >>>>> of SERIAL_SAMSUNG_UARTS in the serial driver with the maximum number of >> >>>> >> >>>> Well, as you know the number of uart ports are different on each Samsung SoCs >> >>>> so I don't think just using maximum number of uart ports are possible for new >> >>>> exynos7 SoC at this moment. >> >>> >> >>> Thanks for the review. >> >>> The main reason for me sending this patch was so that we may be able >> >>> to re-use the serial driver on arm64 based Exynos7 too. The two >> >>> symbols mentioned above which depend on PLAT_SAMSUNG prevent this. I >> >>> initially sent a patch which changed the dependency to SERIAL_SAMSUNG >> >>> for these 2 symbols. However, Tomasz suggested that a clean-up of >> >>> these two symbols would be a better option. >> >>> >> >>> Please see the discussion of the previous version here: >> >>> https://lkml.org/lkml/2014/9/29/702 >> >>> >> >>> Can you please let me know if the previous version is acceptable ? >> >> >> >> Kukjin, can you please indicate the approach you would like me to >> >> take. Without this serial support is blocked on Exynos7. >> > >> > Gentle reminder on this. >> >> Hi Kukjin, >> > Hi Abhilash, > >> I don't mean to nag, but this another reminder to review this. > > Yeah, it's no problem for me ;) > >> Please let me know if you are too busy to have a look at this or >> require some more inputs from me. >> > Since I'm still having some objection on 2nd version, how about keeping current > config options for serial for now and changing the dependency to SERIAL_SAMSUNG? > And if required later, we can look into removal these config options later. OK, thanks. My earlier patch [1] which does this still applies cleanly on linux-next. I will request Greg to review the patch. I had a question regarding the merging of pending exynos7 patches. The clock exynos7 support will go through your tree (according to [2]) and so must the exynos7 arch/dts support [3] due to the related dependencies. As part of the arch/dts support we are enabling the samsung serial driver in arm64 defconfig. This will cause build breakages without [1] being applied. So, I assume all 3 patch-sets will go through your tree once they have been ack'ed or is there some other way ? [1] serial: samsung: Fix serial config dependencies for exynos7 https://patchwork.kernel.org/patch/4993521/ [2] GIT PULL] Samsung clock changes for 3.19 http://www.spinics.net/lists/arm-kernel/msg373962.html [3] [PATCH v7 0/7] Enable support for Samsung Exynos7 SoC http://www.spinics.net/lists/arm-kernel/msg375961.html > > Thanks, > Kukjin >
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 81f6ee7..9fc9092 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -247,22 +247,6 @@ config SERIAL_SAMSUNG provide all of these ports, depending on how the serial port pins are configured. -config SERIAL_SAMSUNG_UARTS_4 - bool - depends on PLAT_SAMSUNG - default y if !(CPU_S3C2410 || CPU_S3C2412 || CPU_S3C2440 || CPU_S3C2442) - help - Internal node for the common case of 4 Samsung compatible UARTs - -config SERIAL_SAMSUNG_UARTS - int - depends on PLAT_SAMSUNG - default 4 if SERIAL_SAMSUNG_UARTS_4 || CPU_S3C2416 - default 3 - help - Select the number of available UART ports for the Samsung S3C - serial driver - config SERIAL_SAMSUNG_DEBUG bool "Samsung SoC serial debug" depends on SERIAL_SAMSUNG && DEBUG_LL diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index c78f43a..ba04c6d 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -962,14 +962,14 @@ static struct uart_ops s3c24xx_serial_ops = { static struct uart_driver s3c24xx_uart_drv = { .owner = THIS_MODULE, .driver_name = "s3c2410_serial", - .nr = CONFIG_SERIAL_SAMSUNG_UARTS, + .nr = MAX_SAMSUNG_UARTS, .cons = S3C24XX_SERIAL_CONSOLE, .dev_name = S3C24XX_SERIAL_NAME, .major = S3C24XX_SERIAL_MAJOR, .minor = S3C24XX_SERIAL_MINOR, }; -static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS] = { +static struct s3c24xx_uart_port s3c24xx_serial_ports[MAX_SAMSUNG_UARTS] = { [0] = { .port = { .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[0].port.lock), @@ -992,8 +992,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS .line = 1, } }, -#if CONFIG_SERIAL_SAMSUNG_UARTS > 2 - [2] = { .port = { .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[2].port.lock), @@ -1005,8 +1003,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS .line = 2, } }, -#endif -#if CONFIG_SERIAL_SAMSUNG_UARTS > 3 [3] = { .port = { .lock = __SPIN_LOCK_UNLOCKED(s3c24xx_serial_ports[3].port.lock), @@ -1018,7 +1014,6 @@ static struct s3c24xx_uart_port s3c24xx_serial_ports[CONFIG_SERIAL_SAMSUNG_UARTS .line = 3, } } -#endif }; /* s3c24xx_serial_resetport @@ -1590,7 +1585,7 @@ s3c24xx_serial_console_setup(struct console *co, char *options) /* is this a valid port */ - if (co->index == -1 || co->index >= CONFIG_SERIAL_SAMSUNG_UARTS) + if (co->index == -1 || co->index >= MAX_SAMSUNG_UARTS) co->index = 0; port = &s3c24xx_serial_ports[co->index].port; diff --git a/drivers/tty/serial/samsung.h b/drivers/tty/serial/samsung.h index eb071dd..484b49e 100644 --- a/drivers/tty/serial/samsung.h +++ b/drivers/tty/serial/samsung.h @@ -1,6 +1,9 @@ #ifndef __SAMSUNG_H #define __SAMSUNG_H +/* Maximum UART ports available */ +#define MAX_SAMSUNG_UARTS 4 + /* * Driver for Samsung SoC onboard UARTs. * @@ -38,7 +41,7 @@ struct s3c24xx_uart_info { struct s3c24xx_serial_drv_data { struct s3c24xx_uart_info *info; struct s3c2410_uartcfg *def_cfg; - unsigned int fifosize[CONFIG_SERIAL_SAMSUNG_UARTS]; + unsigned int fifosize[MAX_SAMSUNG_UARTS]; }; struct s3c24xx_uart_port {