This is a note to let you know that I've just added the patch titled
wifi: iwlwifi: allow only CN mcc from WRDD
to the 6.11-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-iwlwifi-allow-only-cn-mcc-from-wrdd.patch
and it can be found in the queue-6.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 12ca2abf7742e34a1bf5c5027e322fc5ccd97525
Author: Anjaneyulu <pagadala.yesu.anjaneyulu@xxxxxxxxx>
Date: Thu Aug 8 23:22:49 2024 +0300
wifi: iwlwifi: allow only CN mcc from WRDD
[ Upstream commit ff5aabe7c2a4a4b089a9ced0cb3d0e284963a7dd ]
Block other mcc expect CN from WRDD ACPI.
Signed-off-by: Anjaneyulu <pagadala.yesu.anjaneyulu@xxxxxxxxx>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx>
Link: https://patch.msgid.link/20240808232017.fe6ea7aa4b39.I86004687a2963fe26f990770aca103e2f5cb1628@changeid
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
index 8c8880b448270..a7cea0a55b35a 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 e2c056f483c1c..c5bd89e61d4a8 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 fb982d4fe8510..2cf878f237ac6 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 1f8884ca8997c..e0ef981cd8f28 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
@@ -149,8 +149,6 @@ 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
