[media] cx18: fix register range check
Ensure that the register is aligned to a dword, otherwise the range check
could fail since it assumes dword alignment.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/pci/cx18/cx18-ioctl.c b/drivers/media/pci/cx18/cx18-ioctl.c
index 414b0ec..1110bcb 100644
--- a/drivers/media/pci/cx18/cx18-ioctl.c
+++ b/drivers/media/pci/cx18/cx18-ioctl.c
@@ -367,6 +367,8 @@
{
struct cx18 *cx = fh2id(fh)->cx;
+ if (reg->reg & 0x3)
+ return -EINVAL;
if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
return -EINVAL;
reg->size = 4;
@@ -379,6 +381,8 @@
{
struct cx18 *cx = fh2id(fh)->cx;
+ if (reg->reg & 0x3)
+ return -EINVAL;
if (reg->reg >= CX18_MEM_OFFSET + CX18_MEM_SIZE)
return -EINVAL;
cx18_write_enc(cx, reg->val, reg->reg);