From 6abe1e2e39048ce26cbad276841b9b1b2a7e627a Mon Sep 17 00:00:00 2001
From: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Date: Sun, 4 Aug 2019 14:06:45 +0300
Subject: [PATCH] iwlwifi: dbg_ini: use vzalloc to allocate dumping memory regions
Git-commit: 6abe1e2e39048ce26cbad276841b9b1b2a7e627a
Patch-mainline: v5.5-rc1
References: jsc#SLE-13430

During dump flow, the driver allocates spaces to store the memory
regions that will be included in the dump. These regions can be very
large so in order to avoid allocation failure, use vzalloc instead.
The kmalloc uses GFP_KERNEL and the driver does not make any use of the
fact that the memory is contiguous so the same functionality is
maintained.

Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
index ce77ed17ede0..007a722cf1c6 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
@@ -1846,7 +1846,7 @@ static u32 iwl_dump_ini_mem(struct iwl_fw_runtime *fwrt, struct list_head *list,
 	if (!size)
 		return 0;
 
-	entry = kmalloc(sizeof(*entry) + sizeof(*tlv) + size, GFP_KERNEL);
+	entry = vzalloc(sizeof(*entry) + sizeof(*tlv) + size);
 	if (!entry)
 		return 0;
 
@@ -1892,7 +1892,7 @@ static u32 iwl_dump_ini_mem(struct iwl_fw_runtime *fwrt, struct list_head *list,
 	return entry->size;
 
 out_err:
-	kfree(entry);
+	vfree(entry);
 
 	return 0;
 }
@@ -1914,7 +1914,7 @@ static u32 iwl_dump_ini_info(struct iwl_fw_runtime *fwrt,
 		num_of_cfg_names++;
 	}
 
-	entry = kmalloc(sizeof(*entry) + size, GFP_KERNEL);
+	entry = vzalloc(sizeof(*entry) + size);
 	if (!entry)
 		return 0;
 
@@ -2121,7 +2121,7 @@ static u32 iwl_dump_ini_file_gen(struct iwl_fw_runtime *fwrt,
 	    !le64_to_cpu(trigger->regions_mask))
 		return 0;
 
-	entry = kmalloc(sizeof(*entry) + sizeof(*hdr), GFP_KERNEL);
+	entry = vzalloc(sizeof(*entry) + sizeof(*hdr));
 	if (!entry)
 		return 0;
 
@@ -2129,7 +2129,7 @@ static u32 iwl_dump_ini_file_gen(struct iwl_fw_runtime *fwrt,
 
 	size = iwl_dump_ini_trigger(fwrt, dump_data, list);
 	if (!size) {
-		kfree(entry);
+		vfree(entry);
 		return 0;
 	}
 
@@ -2195,7 +2195,7 @@ static void iwl_dump_ini_list_free(struct list_head *list)
 			list_entry(list->next, typeof(*entry), list);
 
 		list_del(&entry->list);
-		kfree(entry);
+		vfree(entry);
 	}
 }
 
-- 
2.16.4