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media: pulse8-cec: handle possible ping error

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[ Upstream commit 92cbf865ea ]

Handle (and warn about) possible error waiting for MSGCODE_PING result.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Antipov
2023-06-06 06:38:15 +02:00
committed by Greg Kroah-Hartman
parent f281a37393
commit 17d75773b6
1 changed files with 5 additions and 2 deletions
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7
drivers/media/cec/usb/pulse8/pulse8-cec.c
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@@ -809,8 +809,11 @@ static void pulse8_ping_eeprom_work_handler(struct work_struct *work)
mutex_lock(&pulse8->lock);
cmd = MSGCODE_PING;
pulse8_send_and_wait(pulse8, &cmd, 1,
MSGCODE_COMMAND_ACCEPTED, 0);
if (pulse8_send_and_wait(pulse8, &cmd, 1,
MSGCODE_COMMAND_ACCEPTED, 0)) {
dev_warn(pulse8->dev, "failed to ping EEPROM\n");
goto unlock;
}
if (pulse8->vers < 2)
goto unlock;