wifi: iwlwifi: fw: allow vmalloc for PNVM image

This image can be pretty big (I've seen order-7 allocations!),
and we later have to copy it to DMA memory (in newer FW even
there it won't need to be contiguous), so we can easily deal
with it being in vmalloc. Use kvmemdup()/kvfree() for it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206175739.9b4c06b5d533.Idf699b36ec95ee36f530355cd2cb1da297a098f1@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
index 053174f..1195e70 100644 (file)
--- a/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/pnvm.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright(c) 2020-2023 Intel Corporation
+ * Copyright(c) 2020-2024 Intel Corporation
  */
 
 #include "iwl-drv.h"
@@ -252,7 +252,7 @@ static int iwl_pnvm_get_from_fs(struct iwl_trans *trans, u8 **data, size_t *len)
        }
 
        new_len = pnvm->size;
-       *data = kmemdup(pnvm->data, pnvm->size, GFP_KERNEL);
+       *data = kvmemdup(pnvm->data, pnvm->size, GFP_KERNEL);
        release_firmware(pnvm);
 
        if (!*data)
@@ -275,8 +275,8 @@ static u8 *iwl_get_pnvm_image(struct iwl_trans *trans_p, size_t *len)
                        if (*len >= sizeof(*package)) {
                                /* we need only the data */
                                *len -= sizeof(*package);
-                               image = kmemdup(package->data,
-                                               *len, GFP_KERNEL);
+                               image = kvmemdup(package->data,
+                                                *len, GFP_KERNEL);
                        }
                        /*
                         * free package regardless of whether kmemdup
@@ -333,7 +333,7 @@ static void iwl_pnvm_load_pnvm_to_trans(struct iwl_trans *trans,
 set:
        iwl_trans_set_pnvm(trans, capa);
 free:
-       kfree(data);
+       kvfree(data);
        kfree(pnvm_data);
 }