From: Greg Kroah-Hartman gregkh@linuxfoundation.org
stable inclusion from linux-4.19.192 commit f7bce372a9e415990c6b9852febc7fb0ffc93729
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commit 8d1beda5f11953ffe135a5213287f0b25b4da41b upstream.
This reverts commit 248b57015f35c94d4eae2fdd8c6febf5cd703900.
Because of recent interactions with developers from @umn.edu, all commits from them have been recently re-reviewed to ensure if they were correct or not.
Upon review, this commit was found to be incorrect for the reasons below, so it must be reverted. It will be fixed up "correctly" in a later kernel change.
The original commit does not properly unwind if there is an error condition so it needs to be reverted at this point in time.
Cc: Kangjie Lu kjlu@umn.edu Cc: Jacek Anaszewski jacek.anaszewski@gmail.com Cc: stable stable@vger.kernel.org Fixes: 248b57015f35 ("leds: lp5523: fix a missing check of return value of lp55xx_read") Link: https://lore.kernel.org/r/20210503115736.2104747-9-gregkh@linuxfoundation.or... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/leds/leds-lp5523.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/leds/leds-lp5523.c b/drivers/leds/leds-lp5523.c index fd64df5a57a5e..a2e74feee2b2f 100644 --- a/drivers/leds/leds-lp5523.c +++ b/drivers/leds/leds-lp5523.c @@ -318,9 +318,7 @@ static int lp5523_init_program_engine(struct lp55xx_chip *chip)
/* Let the programs run for couple of ms and check the engine status */ usleep_range(3000, 6000); - ret = lp55xx_read(chip, LP5523_REG_STATUS, &status); - if (ret) - return ret; + lp55xx_read(chip, LP5523_REG_STATUS, &status); status &= LP5523_ENG_STATUS_MASK;
if (status != LP5523_ENG_STATUS_MASK) {