From: Johannes Berg johannes.berg@intel.com
[ Upstream commit 296f3e926716ded8dc29e349d2b042b362f96515 ]
The code reading the WPFC table needs to take into account the domain type (first element in the package), shouldn't leak the memory if it fails, and has a bad comment. Fix all these issues.
Fixes: c4c954547755 ("wifi: iwlwifi: implement WPFC ACPI table loading") Reported-by: Miri Korenblit miriam.rachel.korenblit@intel.com Signed-off-by: Johannes Berg johannes.berg@intel.com Reviewed-by: Gregory Greenman Gregory gregory.greenman@intel.com Link: https://msgid.link/20240128084842.2afeb476b62d.I200568dc42a277e21c12be99d5aa... 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 | 10 +++++----- drivers/net/wireless/intel/iwlwifi/fw/acpi.h | 2 +- 2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index dcc4810cb3247..f6ee5afb3320e 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -1296,7 +1296,6 @@ void iwl_acpi_get_phy_filters(struct iwl_fw_runtime *fwrt, if (IS_ERR(data)) return;
- /* try to read wtas table revision 1 or revision 0*/ wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data, ACPI_WPFC_WIFI_DATA_SIZE, &tbl_rev); @@ -1306,13 +1305,14 @@ void iwl_acpi_get_phy_filters(struct iwl_fw_runtime *fwrt, if (tbl_rev != 0) goto out_free;
- BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) != ACPI_WPFC_WIFI_DATA_SIZE); + BUILD_BUG_ON(ARRAY_SIZE(filters->filter_cfg_chains) != + ACPI_WPFC_WIFI_DATA_SIZE - 1);
for (i = 0; i < ARRAY_SIZE(filters->filter_cfg_chains); i++) { - if (wifi_pkg->package.elements[i].type != ACPI_TYPE_INTEGER) - return; + if (wifi_pkg->package.elements[i + 1].type != ACPI_TYPE_INTEGER) + goto out_free; tmp.filter_cfg_chains[i] = - cpu_to_le32(wifi_pkg->package.elements[i].integer.value); + cpu_to_le32(wifi_pkg->package.elements[i + 1].integer.value); }
IWL_DEBUG_RADIO(fwrt, "Loaded WPFC filter config from ACPI\n"); diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.h b/drivers/net/wireless/intel/iwlwifi/fw/acpi.h index e9277f6f35821..39106ccb4b9b6 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.h @@ -56,7 +56,7 @@ #define ACPI_EWRD_WIFI_DATA_SIZE_REV2 ((ACPI_SAR_PROFILE_NUM - 1) * \ ACPI_SAR_NUM_CHAINS_REV2 * \ ACPI_SAR_NUM_SUB_BANDS_REV2 + 3) -#define ACPI_WPFC_WIFI_DATA_SIZE 4 /* 4 filter config words */ +#define ACPI_WPFC_WIFI_DATA_SIZE 5 /* domain and 4 filter config words */
/* revision 0 and 1 are identical, except for the semantics in the FW */ #define ACPI_GEO_NUM_BANDS_REV0 2