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[media] media: s5p-mfc: fix sparse warnings 

Commits a0f10c131c and
6c9fe76536 ("media: s5p-mfc: fix broken
pointer cast on 64bit arch") fixed issue with lossy cast on 64-bit
architectures. However it also removed __iomem attribute from that cast.
This leads to sparse warnings. This patch fixes those warnings by adding
__iomem cast in case of v6+ code version and replacing readl/writel by
simple u32 load/store operations in case of v5 code (which is called on
system memory allocated by dma_alloc_coherent() instead of io registers).

Reported-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Marek Szyprowski 2015-05-28 08:11:47 -03:00 committed by Mauro Carvalho Chehab
parent e9763995e7
commit 1d03deff82
2 changed files with 4 additions and 4 deletions
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4
drivers/media/platform/s5p-mfc/s5p_mfc_opr_v5.c
View File

@ -263,7 +263,7 @@ static void s5p_mfc_release_dev_context_buffer_v5(struct s5p_mfc_dev *dev)
static void s5p_mfc_write_info_v5(struct s5p_mfc_ctx *ctx, unsigned int data,
unsigned int ofs)
{
writel(data, (void *)(ctx->shm.virt + ofs));
*(u32 *)(ctx->shm.virt + ofs) = data;
wmb();
}
@ -271,7 +271,7 @@ static unsigned int s5p_mfc_read_info_v5(struct s5p_mfc_ctx *ctx,
unsigned long ofs)
{
rmb();
return readl((void *)(ctx->shm.virt + ofs));
return *(u32 *)(ctx->shm.virt + ofs);
}
static void s5p_mfc_dec_calc_dpb_size_v5(struct s5p_mfc_ctx *ctx)

4
drivers/media/platform/s5p-mfc/s5p_mfc_opr_v6.c
View File

@ -1852,7 +1852,7 @@ static void s5p_mfc_write_info_v6(struct s5p_mfc_ctx *ctx, unsigned int data,
unsigned int ofs)
{
s5p_mfc_clock_on();
writel(data, (void *)((unsigned long)ofs));
writel(data, (void __iomem *)((unsigned long)ofs));
s5p_mfc_clock_off();
}
@ -1862,7 +1862,7 @@ s5p_mfc_read_info_v6(struct s5p_mfc_ctx *ctx, unsigned long ofs)
int ret;
s5p_mfc_clock_on();
ret = readl((void *)ofs);
ret = readl((void __iomem *)ofs);
s5p_mfc_clock_off();
return ret;