| Message ID | 20200219175007.13627-9-krzk@kernel.org |
|---|---|
| State | New |
| Headers | show |
| Series | iomap: Constify ioreadX() iomem argument | expand |
On 2/19/20 6:50 PM, Krzysztof Kozlowski wrote: > The ioreadX() helpers have inconsistent interface. On some architectures > void *__iomem address argument is a pointer to const, on some not. > > Implementations of ioreadX() do not modify the memory under the address > so they can be converted to a "const" version for const-safety and > consistency among architectures. > > Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Regards, Hans > --- > drivers/media/platform/fsl-viu.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/media/platform/fsl-viu.c b/drivers/media/platform/fsl-viu.c > index 81a8faedbba6..991d9dc82749 100644 > --- a/drivers/media/platform/fsl-viu.c > +++ b/drivers/media/platform/fsl-viu.c > @@ -34,7 +34,7 @@ > /* Allow building this driver with COMPILE_TEST */ > #if !defined(CONFIG_PPC) && !defined(CONFIG_MICROBLAZE) > #define out_be32(v, a) iowrite32be(a, (void __iomem *)v) > -#define in_be32(a) ioread32be((void __iomem *)a) > +#define in_be32(a) ioread32be((const void __iomem *)a) > #endif > > #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */ >
diff --git a/drivers/media/platform/fsl-viu.c b/drivers/media/platform/fsl-viu.c index 81a8faedbba6..991d9dc82749 100644 --- a/drivers/media/platform/fsl-viu.c +++ b/drivers/media/platform/fsl-viu.c @@ -34,7 +34,7 @@ /* Allow building this driver with COMPILE_TEST */ #if !defined(CONFIG_PPC) && !defined(CONFIG_MICROBLAZE) #define out_be32(v, a) iowrite32be(a, (void __iomem *)v) -#define in_be32(a) ioread32be((void __iomem *)a) +#define in_be32(a) ioread32be((const void __iomem *)a) #endif #define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
The ioreadX() helpers have inconsistent interface. On some architectures void *__iomem address argument is a pointer to const, on some not. Implementations of ioreadX() do not modify the memory under the address so they can be converted to a "const" version for const-safety and consistency among architectures. Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> --- drivers/media/platform/fsl-viu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)