wl1251: allocate space for firmware with vmalloc()

Earlier firmware was stored to a memory area allocated with kmalloc()
but finding a a contiguous area of memory long enough for the firmware is
very difficult in certain cases. better to allocate the memory for firmware
with vmalloc() instead and use a small buffer for DMA transfers.

Thanks to Eero Tamminen for the idea.

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Reviewed-by: Vidhya Govindan <vidhya.govindan@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1251_main.c b/drivers/net/wireless/wl12xx/wl1251_main.c
index b5e3bdb08448..1f4c238a3371 100644
--- a/drivers/net/wireless/wl12xx/wl1251_main.c
+++ b/drivers/net/wireless/wl12xx/wl1251_main.c
@@ -28,6 +28,7 @@
 #include <linux/irq.h>
 #include <linux/crc32.h>
 #include <linux/etherdevice.h>
+#include <linux/vmalloc.h>
 
 #include "wl1251.h"
 #include "wl12xx_80211.h"
@@ -83,7 +84,7 @@ static int wl1251_fetch_firmware(struct wl1251 *wl)
         }
 
         wl->fw_len = fw->size;
-        wl->fw = kmalloc(wl->fw_len, GFP_KERNEL);
+        wl->fw = vmalloc(wl->fw_len);
 
         if (!wl->fw) {
                 wl1251_error("could not allocate memory for the firmware");
@@ -1427,7 +1428,7 @@ int wl1251_free_hw(struct wl1251 *wl)
 
         kfree(wl->target_mem_map);
         kfree(wl->data_path);
-        kfree(wl->fw);
+        vfree(wl->fw);
         wl->fw = NULL;
         kfree(wl->nvs);
         wl->nvs = NULL;