From: Miri Korenblit miriam.rachel.korenblit@intel.com
[ 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 miriam.rachel.korenblit@intel.com Reviewed-by: Gregory Greenman gregory.greenman@intel.com Link: https://msgid.link/20240129211905.448ea2f40814.Iffd2aadf8e8693e6cb599bee0406... Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 f0e0d4ccbc091..0b1c6bf729c3e 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -674,7 +674,7 @@ int iwl_sar_get_ewrd_table(struct iwl_fw_runtime *fwrt) * 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; }