Files
android_kernel_fxtec_sm6115/include/linux
Jani Nikula 8045aeb87a string: add mem_is_zero() helper to check if memory area is all zeros
[ Upstream commit 3942bb49728ad9e1f94d953a88af169a8f5d8099 ]

Almost two thirds of the memchr_inv() usages check if the memory area is
all zeros, with no interest in where in the buffer the first non-zero
byte is located. Checking for !memchr_inv(s, 0, n) is also not very
intuitive or discoverable. Add an explicit mem_is_zero() helper for this
use case.

Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240814100035.3100852-1-jani.nikula@intel.com
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Stable-dep-of: 3e6ccd790ed6 ("gpio: cdev: check if uAPI v2 config attributes are correctly zeroed")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Ulrich Hecht <uli@kernel.org>
2026-06-29 10:46:13 +02:00
..
2026-04-09 14:44:43 +08:00
2024-02-23 08:12:39 +01:00
2023-08-08 19:49:17 +02:00
2023-12-20 15:38:01 +01:00
2021-12-08 08:50:13 +01:00
2025-12-22 04:34:05 +01:00
2024-04-13 12:50:14 +02:00
2021-01-30 13:32:12 +01:00
2026-01-29 12:09:34 +08:00
2021-05-22 10:59:50 +02:00
2022-10-26 13:19:35 +02:00
2021-03-04 09:39:44 +01:00
2022-08-25 11:15:23 +02:00
2021-02-07 14:48:38 +01:00
2023-09-23 10:47:59 +02:00
2021-06-30 08:48:18 -04:00
2023-06-21 15:39:57 +02:00
2023-02-22 12:47:17 +01:00
2025-09-16 13:55:10 +02:00
2023-11-28 16:46:33 +00:00
2023-10-25 11:16:20 +02:00
2021-12-14 10:18:04 +01:00
2024-07-05 09:00:35 +02:00
2024-02-23 08:12:39 +01:00
2021-12-14 10:18:06 +01:00