lkml.org 
[lkml]   [2018]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.17 286/336] media: cec: fix smatch error
Date
4.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Hans Verkuil <hverkuil@xs4all.nl>

[ Upstream commit b66d448487a478c203368f2b72d7d9156a01f6be ]

drivers/media/cec/cec-pin-error-inj.c:231
cec_pin_error_inj_parse_line() error: uninitialized symbol 'pos'.

The tx-add-bytes command didn't check for the presence of an argument, and
also didn't check that it was > 0.

This should fix this error.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/media/cec/cec-pin-error-inj.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

--- a/drivers/media/cec/cec-pin-error-inj.c
+++ b/drivers/media/cec/cec-pin-error-inj.c
@@ -204,16 +204,18 @@ bool cec_pin_error_inj_parse_line(struct
mode_mask = CEC_ERROR_INJ_MODE_MASK << mode_offset;
arg_idx = cec_error_inj_cmds[i].arg_idx;

- if (mode_offset == CEC_ERROR_INJ_RX_ARB_LOST_OFFSET ||
- mode_offset == CEC_ERROR_INJ_TX_ADD_BYTES_OFFSET)
- is_bit_pos = false;
-
if (mode_offset == CEC_ERROR_INJ_RX_ARB_LOST_OFFSET) {
if (has_op)
return false;
if (!has_pos)
pos = 0x0f;
+ is_bit_pos = false;
+ } else if (mode_offset == CEC_ERROR_INJ_TX_ADD_BYTES_OFFSET) {
+ if (!has_pos || !pos)
+ return false;
+ is_bit_pos = false;
}
+
if (arg_idx >= 0 && is_bit_pos) {
if (!has_pos || pos >= 160)
return false;

\
 
 \ /
  Last update: 2018-08-01 19:17    [W:1.019 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site