If "i" is 2 then when we call cx25821_video_mux() we'd end up going
past the end of the cx25821_boards[dev->board]->input[].
The INPUT() macro obfuscates what's going on in that function so it's
a bit hard to follow. And as Mauro points out the hard coded 2 is
not very helpful.
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
v2: Use a define instead of the hard coded number 2
diff --git a/drivers/staging/cx25821/cx25821-video.c b/drivers/staging/cx25821/cx25821-video.c
index 084fc08..4d6907c 100644
--- a/drivers/staging/cx25821/cx25821-video.c
+++ b/drivers/staging/cx25821/cx25821-video.c
@@ -1312,7 +1312,7 @@ int cx25821_vidioc_s_input(struct file *file, void *priv, unsigned int i)
return err;
}
- if (i > 2) {
+ if (i >= CX25821_NR_INPUT) {
dprintk(1, "%s(): -EINVAL\n", __func__);
return -EINVAL;
}
diff --git a/drivers/staging/cx25821/cx25821.h b/drivers/staging/cx25821/cx25821.h
index db2615b..2d2d009 100644
--- a/drivers/staging/cx25821/cx25821.h
+++ b/drivers/staging/cx25821/cx25821.h
@@ -98,6 +98,7 @@
#define CX25821_BOARD_CONEXANT_ATHENA10 1
#define MAX_VID_CHANNEL_NUM 12
#define VID_CHANNEL_NUM 8
+#define CX25821_NR_INPUT 2
struct cx25821_fmt {
char *name;
@@ -196,7 +197,7 @@ struct cx25821_board {
unsigned char radio_addr;
u32 clk_freq;
- struct cx25821_input input[2];
+ struct cx25821_input input[CX25821_NR_INPUT];
};
struct cx25821_subid {
--
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