diff mbox

ARM: SAMSUNG: fix to support for missing cpu specific map_io

Message ID 190501ce8cdd$2abd6780$80383680$%kim@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Kim Kukjin July 30, 2013, 4:27 a.m. UTC
Since commit 7ed76e08 (ARM: EXYNOS: Fix low level debug support)
map_io() is not needed for exynos5440 so need to fix to lookup
cpu which using map_io(). Without this, kernel boot log complains
'CPU EXYNOS5440 support not enabled' on exynos5440 and panic().

Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
---
 arch/arm/plat-samsung/init.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Comments

Sachin Kamat July 30, 2013, 4:38 a.m. UTC | #1
On 30 July 2013 09:57, Kukjin Kim <kgene.kim@samsung.com> wrote:
>
> Since commit 7ed76e08 (ARM: EXYNOS: Fix low level debug support)
> map_io() is not needed for exynos5440 so need to fix to lookup
> cpu which using map_io(). Without this, kernel boot log complains
> 'CPU EXYNOS5440 support not enabled' on exynos5440 and panic().
>
> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
> ---
>  arch/arm/plat-samsung/init.c |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c
> index 3e5c461..50a3ea0 100644
> --- a/arch/arm/plat-samsung/init.c
> +++ b/arch/arm/plat-samsung/init.c
> @@ -55,12 +55,13 @@ void __init s3c_init_cpu(unsigned long idcode,
>
>         printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
>
> -       if (cpu->map_io == NULL || cpu->init == NULL) {
> +       if (cpu->init == NULL) {
>                 printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
>                 panic("Unsupported Samsung CPU");

While at it you could probably remove the printk and have that message
printed by panic instead?
kgene@kernel.org July 31, 2013, 5:44 a.m. UTC | #2
Sachin Kamat wrote:
> 
> On 30 July 2013 09:57, Kukjin Kim <kgene.kim@samsung.com> wrote:
> >
> > Since commit 7ed76e08 (ARM: EXYNOS: Fix low level debug support)
> > map_io() is not needed for exynos5440 so need to fix to lookup
> > cpu which using map_io(). Without this, kernel boot log complains
> > 'CPU EXYNOS5440 support not enabled' on exynos5440 and panic().
> >
> > Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
> > ---
> >  arch/arm/plat-samsung/init.c |    5 +++--
> >  1 file changed, 3 insertions(+), 2 deletions(-)
> >
> > diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c
> > index 3e5c461..50a3ea0 100644
> > --- a/arch/arm/plat-samsung/init.c
> > +++ b/arch/arm/plat-samsung/init.c
> > @@ -55,12 +55,13 @@ void __init s3c_init_cpu(unsigned long idcode,
> >
> >         printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
> >
> > -       if (cpu->map_io == NULL || cpu->init == NULL) {
> > +       if (cpu->init == NULL) {
> >                 printk(KERN_ERR "CPU %s support not enabled\n",
cpu->name);
> >                 panic("Unsupported Samsung CPU");
> 
> While at it you could probably remove the printk and have that message
> printed by panic instead?
> 
If required, it should be handled separately, and it is not critical.

- Kukjin

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diff mbox

Patch

diff --git a/arch/arm/plat-samsung/init.c b/arch/arm/plat-samsung/init.c
index 3e5c461..50a3ea0 100644
--- a/arch/arm/plat-samsung/init.c
+++ b/arch/arm/plat-samsung/init.c
@@ -55,12 +55,13 @@  void __init s3c_init_cpu(unsigned long idcode,
 
 	printk("CPU %s (id 0x%08lx)\n", cpu->name, idcode);
 
-	if (cpu->map_io == NULL || cpu->init == NULL) {
+	if (cpu->init == NULL) {
 		printk(KERN_ERR "CPU %s support not enabled\n", cpu->name);
 		panic("Unsupported Samsung CPU");
 	}
 
-	cpu->map_io();
+	if (cpu->map_io)
+		cpu->map_io();
 }
 
 /* s3c24xx_init_clocks