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media: bttv-input: better handle errors at I2C transfer

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The error handling logic at get_key_pv951() is a little bit
akward, with produces this false positive warning:

	drivers/media/pci/bt8xx/bttv-input.c:344 get_key_pv951() error: uninitialized symbol 'b'.

Do a cleanup. As a side effect, it also improves its coding
style.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Mauro Carvalho Chehab 2018-03-23 06:36:26 -04:00
parent b0121ca038
commit d3c449e16f
1 changed files with 5 additions and 1 deletions
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6
drivers/media/pci/bt8xx/bttv-input.c
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@ -332,11 +332,15 @@ static void bttv_ir_stop(struct bttv *btv)
static int get_key_pv951(struct IR_i2c *ir, enum rc_proto *protocol,
u32 *scancode, u8 *toggle)
{
int rc;
unsigned char b;
/* poll IR chip */
if (1 != i2c_master_recv(ir->c, &b, 1)) {
rc = i2c_master_recv(ir->c, &b, 1);
if (rc != 1) {
dprintk("read error\n");
if (rc < 0)
return rc;
return -EIO;
}