[PATCH 6.8 133/715] wifi: iwlwifi: read BIOS PNVM only for non-Intel SKU

Sasha Levin
2024-03-24T22:37:11Z

From: Miri Korenblit <miriam.rachel.korenblit@intel.com>

[ Upstream commit c868a189ecfe8cc0b3173c2eaa7f0b659326c151 ]

The driver is supposed to read the PNVM from BIOS only for non-Intel
SKUs. For Intel SKUs the OEM ID will be 0.
Read BIOS PNVM only when a non-Intel SKU is indicated.

Fixes: b99e32cbfdf6 ("wifi: iwlwifi: Take loading and setting of pnvm image out of parsing part")
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://msgid.link/20240131091413.3625cf1223d3.Ieffda5f506713b1c979388dd7a0e1c1a0145cfca@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/fw/pnvm.c | 30 ++++++++++++--------
1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
index 650e4bde9c17b..56ee0ceed78ab 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
@@ -255,21 +255,27 @@ static u8 *iwl_get_pnvm_image(struct iwl_trans *trans_p, size_t *len)
struct pnvm_sku_package *package;
u8 *image = NULL;

- /* First attempt to get the PNVM from BIOS */
- package = iwl_uefi_get_pnvm(trans_p, len);
- if (!IS_ERR_OR_NULL(package)) {
- if (*len >= sizeof(*package)) {
- /* we need only the data */
- *len -= sizeof(*package);
- image = kmemdup(package->data, *len, GFP_KERNEL);
+ /* Get PNVM from BIOS for non-Intel SKU */
+ if (trans_p->sku_id[2]) {
+ package = iwl_uefi_get_pnvm(trans_p, len);
+ if (!IS_ERR_OR_NULL(package)) {
+ if (*len >= sizeof(*package)) {
+ /* we need only the data */
+ *len -= sizeof(*package);
+ image = kmemdup(package->data,
+ *len, GFP_KERNEL);
+ }
+ /*
+ * free package regardless of whether kmemdup
+ * succeeded
+ */
+ kfree(package);
+ if (image)
+ return image;
}
- /* free package regardless of whether kmemdup succeeded */
- kfree(package);
- if (image)
- return image;
}

- /* If it's not available, try from the filesystem */
+ /* If it's not available, or for Intel SKU, try from the filesystem */
if (iwl_pnvm_get_from_fs(trans_p, &image, len))
return NULL;
return image;
--
2.43.0