From 503431174b1a26cd9783bd3a8e58d5fe9756480c Mon Sep 17 00:00:00 2001 From: Miri Korenblit Date: Mon, 29 Jan 2024 21:21:49 +0200 Subject: [PATCH] wifi: iwlwifi: fix EWRD table validity check [ Upstream commit c8d8f3911135921ace8e939ea0956b55f74bf8a0 ] EWRD ACPI table contains up to 3 additional sar profiles. According to the BIOS spec, the table contains a n_profile variable indicating how many additional profiles exist in the table. Currently we check that n_profiles is not <= 0. But according to the BIOS spec, 0 is a valid value, and it can't be < 0 anyway because we receive that from ACPI as an unsigned integer. Fixes: 39c1a9728f93 ("iwlwifi: refactor the SAR tables from mvm to acpi") Signed-off-by: Miri Korenblit Reviewed-by: Gregory Greenman Link: https://msgid.link/20240129211905.448ea2f40814.Iffd2aadf8e8693e6cb599bee0406a800a0c1e081@changeid Signed-off-by: Johannes Berg Signed-off-by: Sasha Levin --- drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index 564eeb002e8e..2cda1dcfd059 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -767,7 +767,7 @@ read_table: * from index 1, so the maximum value allowed here is * ACPI_SAR_PROFILES_NUM - 1. */ - if (n_profiles <= 0 || n_profiles >= ACPI_SAR_PROFILE_NUM) { + if (n_profiles >= ACPI_SAR_PROFILE_NUM) { ret = -EINVAL; goto out_free; }