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[media] cx88: fix register mask 

Ensure that the register is aligned to a dword, otherwise the read could
read out-of-range data.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2013-05-29 06:22:02 -03:00 committed by Mauro Carvalho Chehab
parent da6a855320
commit 7feeb14821
1 changed files with 2 additions and 2 deletions
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4
drivers/media/pci/cx88/cx88-video.c
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@ -1360,7 +1360,7 @@ static int vidioc_g_register (struct file *file, void *fh,
struct cx88_core *core = ((struct cx8800_fh*)fh)->dev->core;
/* cx2388x has a 24-bit register space */
reg->val = cx_read(reg->reg & 0xffffff);
reg->val = cx_read(reg->reg & 0xfffffc);
reg->size = 4;
return 0;
}
@ -1370,7 +1370,7 @@ static int vidioc_s_register (struct file *file, void *fh,
{
struct cx88_core *core = ((struct cx8800_fh*)fh)->dev->core;
cx_write(reg->reg & 0xffffff, reg->val);
cx_write(reg->reg & 0xfffffc, reg->val);
return 0;
}
#endif