From ff5aabe7c2a4a4b089a9ced0cb3d0e284963a7dd Mon Sep 17 00:00:00 2001 From: Anjaneyulu Date: Thu, 8 Aug 2024 23:22:49 +0300 Subject: [PATCH] wifi: iwlwifi: allow only CN mcc from WRDD Block other mcc expect CN from WRDD ACPI. Signed-off-by: Anjaneyulu Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20240808232017.fe6ea7aa4b39.I86004687a2963fe26f990770aca103e2f5cb1628@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 5 +++++ drivers/net/wireless/intel/iwlwifi/fw/regulatory.h | 2 ++ drivers/net/wireless/intel/iwlwifi/fw/uefi.c | 2 +- drivers/net/wireless/intel/iwlwifi/fw/uefi.h | 2 -- 4 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c index 79774c8c7ff4..d20cd49773c9 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c @@ -357,6 +357,11 @@ int iwl_acpi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc) } mcc_val = wifi_pkg->package.elements[1].integer.value; + if (mcc_val != BIOS_MCC_CHINA) { + ret = -EINVAL; + IWL_DEBUG_RADIO(fwrt, "ACPI WRDD is supported only for CN\n"); + goto out_free; + } mcc[0] = (mcc_val >> 8) & 0xff; mcc[1] = mcc_val & 0xff; diff --git a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h index c2209948b4c0..81787501d4a4 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h @@ -45,6 +45,8 @@ #define IWL_WTAS_ENABLE_IEC_MSK 0x4 #define IWL_WTAS_USA_UHB_MSK BIT(16) +#define BIOS_MCC_CHINA 0x434e + /* * The profile for revision 2 is a superset of revision 1, which is in * turn a superset of revision 0. So we can store all revisions diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c index 754fc5014fbf..091fb6fd7c78 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c @@ -638,7 +638,7 @@ int iwl_uefi_get_mcc(struct iwl_fw_runtime *fwrt, char *mcc) goto out; } - if (data->mcc != UEFI_MCC_CHINA) { + if (data->mcc != BIOS_MCC_CHINA) { ret = -EINVAL; IWL_DEBUG_RADIO(fwrt, "UEFI WRDD is supported only for CN\n"); goto out; diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h index 0b2477190070..e525d449e656 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h @@ -151,8 +151,6 @@ struct uefi_cnv_var_splc { u32 default_pwr_limit; } __packed; -#define UEFI_MCC_CHINA 0x434e - /* struct uefi_cnv_var_wrdd - WRDD table as defined in UEFI * @revision: the revision of the table * @mcc: country identifier as defined in ISO/IEC 3166-1 Alpha 2 code