| Message ID | 88fcd8947095ec6dff8ea709c8ceffa72b16f686.1720789921.git.mchehab+huawei@kernel.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | Add ACPI CPER firmware first error injection for Arm Processor | expand |
On Fri, 12 Jul 2024 15:15:08 +0200 Mauro Carvalho Chehab <mchehab+huawei@kernel.org> wrote: > Having magic numbers inside the code is not a good idea, as it > is error-prone. So, instead, create a macro with the number > definition. > > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Seems sensible to me. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
On Fri, 12 Jul 2024 at 14:15, Mauro Carvalho Chehab <mchehab+huawei@kernel.org> wrote: > > Having magic numbers inside the code is not a good idea, as it > is error-prone. So, instead, create a macro with the number > definition. > > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> > --- > hw/arm/virt-acpi-build.c | 6 +++--- > hw/arm/virt.c | 3 ++- > include/hw/arm/virt.h | 3 +++ > 3 files changed, 8 insertions(+), 4 deletions(-) Thanks for writing this refactoring patch; I have a couple of nits below but otherwise it looks good. > diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c > index e10cad86dd73..ad0a0bcec310 100644 > --- a/hw/arm/virt-acpi-build.c > +++ b/hw/arm/virt-acpi-build.c > @@ -154,10 +154,10 @@ static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap, > aml_append(dev, aml_name_decl("_CRS", crs)); > > Aml *aei = aml_resource_template(); > - /* Pin 3 for power button */ > - const uint32_t pin_list[1] = {3}; > + /* Pin for power button */ > + const uint32_t pin = GPIO_PIN_POWER_BUTTON; I would say that with the constant name we could now drop that comment entirely. > aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH, > - AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1, > + AML_EXCLUSIVE, AML_PULL_UP, 0, &pin, 1, > "GPO0", NULL, 0)); > aml_append(dev, aml_name_decl("_AEI", aei)); > > diff --git a/hw/arm/virt.c b/hw/arm/virt.c > index b0c68d66a345..7b886f3477b6 100644 > --- a/hw/arm/virt.c > +++ b/hw/arm/virt.c > @@ -1013,7 +1013,8 @@ static void create_gpio_keys(char *fdt, DeviceState *pl061_dev, > uint32_t phandle) > { > gpio_key_dev = sysbus_create_simple("gpio-key", -1, > - qdev_get_gpio_in(pl061_dev, 3)); > + qdev_get_gpio_in(pl061_dev, > + GPIO_PIN_POWER_BUTTON)); > > qemu_fdt_add_subnode(fdt, "/gpio-keys"); > qemu_fdt_setprop_string(fdt, "/gpio-keys", "compatible", "gpio-keys"); You've missed one instance of the hardcoded 3, where we write the FDT information about it further down in this function: qemu_fdt_setprop_cells(fdt, "/gpio-keys/poweroff", "gpios", phandle, 3, 0); This also can now be GPIO_PIN_POWER_BUTTON. thanks -- PMM
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index e10cad86dd73..ad0a0bcec310 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -154,10 +154,10 @@ static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap, aml_append(dev, aml_name_decl("_CRS", crs)); Aml *aei = aml_resource_template(); - /* Pin 3 for power button */ - const uint32_t pin_list[1] = {3}; + /* Pin for power button */ + const uint32_t pin = GPIO_PIN_POWER_BUTTON; aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH, - AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1, + AML_EXCLUSIVE, AML_PULL_UP, 0, &pin, 1, "GPO0", NULL, 0)); aml_append(dev, aml_name_decl("_AEI", aei)); diff --git a/hw/arm/virt.c b/hw/arm/virt.c index b0c68d66a345..7b886f3477b6 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -1013,7 +1013,8 @@ static void create_gpio_keys(char *fdt, DeviceState *pl061_dev, uint32_t phandle) { gpio_key_dev = sysbus_create_simple("gpio-key", -1, - qdev_get_gpio_in(pl061_dev, 3)); + qdev_get_gpio_in(pl061_dev, + GPIO_PIN_POWER_BUTTON)); qemu_fdt_add_subnode(fdt, "/gpio-keys"); qemu_fdt_setprop_string(fdt, "/gpio-keys", "compatible", "gpio-keys"); diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h index ab961bb6a9b8..a4d937ed45ac 100644 --- a/include/hw/arm/virt.h +++ b/include/hw/arm/virt.h @@ -47,6 +47,9 @@ /* See Linux kernel arch/arm64/include/asm/pvclock-abi.h */ #define PVTIME_SIZE_PER_CPU 64 +/* GPIO pins */ +#define GPIO_PIN_POWER_BUTTON 3 + enum { VIRT_FLASH, VIRT_MEM,
Having magic numbers inside the code is not a good idea, as it is error-prone. So, instead, create a macro with the number definition. Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> --- hw/arm/virt-acpi-build.c | 6 +++--- hw/arm/virt.c | 3 ++- include/hw/arm/virt.h | 3 +++ 3 files changed, 8 insertions(+), 4 deletions(-)