5.15-stable review patch. If anyone has any objections, please let me know.
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From: Michal Vokáč michal.vokac@ysoft.com
commit 09b1ef9813a0742674f7efe26104403ca94a1b4a upstream.
Since commit 92a81562e695 ("leds: lp55xx: Add multicolor framework support to lp55xx") there are two subsequent tests if the chan_nr (reg property) is in valid range. One in the lp55xx_init_led() function and one in the lp55xx_parse_common_child() function that was added with the mentioned commit.
There are two issues with that.
First is in the lp55xx_parse_common_child() function where the reg property is tested right after it is read from the device tree. Test for the upper range is not correct though. Valid reg values are 0 to (max_channel - 1) so it should be >=.
Second issue is that in case the parsed value is out of the range the probe just fails and no error message is shown as the code never reaches the second test that prints and error message.
Remove the test form lp55xx_parse_common_child() function completely and keep the one in lp55xx_init_led() function to deal with it.
Fixes: 92a81562e695 ("leds: lp55xx: Add multicolor framework support to lp55xx") Cc: stable@vger.kernel.org Signed-off-by: Michal Vokáč michal.vokac@ysoft.com Link: https://lore.kernel.org/r/20241017150812.3563629-1-michal.vokac@ysoft.com Signed-off-by: Lee Jones lee@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/leds/leds-lp55xx-common.c | 3 --- 1 file changed, 3 deletions(-)
--- a/drivers/leds/leds-lp55xx-common.c +++ b/drivers/leds/leds-lp55xx-common.c @@ -580,9 +580,6 @@ static int lp55xx_parse_common_child(str if (ret) return ret;
- if (*chan_nr < 0 || *chan_nr > cfg->max_channel) - return -EINVAL; - return 0; }