typhoon: Need non-vmalloc memory to DMA firmware to the card.

request_firmware() gives vmalloc'd memory, which is not suitable
for pci_map_single() and friends.

Use a kmalloc()'d copy of the firmware for this DMA operation.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 20 insertions, 7 deletions

diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c
index cd3283f766d9..ec2541c8c229 100644
--- a/drivers/net/typhoon.c
+++ b/drivers/net/typhoon.c
@@ -1347,6 +1347,7 @@ typhoon_init_rings(struct typhoon *tp)
 }
 
 static const struct firmware *typhoon_fw;
+static u8 *typhoon_fw_image;
 
 static int
 typhoon_request_firmware(struct typhoon *tp)
@@ -1367,12 +1368,22 @@ typhoon_request_firmware(struct typhoon *tp)
             memcmp(typhoon_fw->data, "TYPHOON", 8)) {
                 printk(KERN_ERR "%s: Invalid firmware image\n",
                        tp->name);
-                release_firmware(typhoon_fw);
-                typhoon_fw = NULL;
-                return -EINVAL;
+                err = -EINVAL;
+                goto out_err;
+        }
+
+        typhoon_fw_image = kmalloc(typhoon_fw->size, GFP_KERNEL);
+        if (!typhoon_fw_image) {
+                err = -ENOMEM;
+                goto out_err;
         }
 
         return 0;
+
+out_err:
+        release_firmware(typhoon_fw);
+        typhoon_fw = NULL;
+        return err;
 }
 
 static int
@@ -1394,11 +1405,11 @@ typhoon_download_firmware(struct typhoon *tp)
         int i;
         int err;
 
-        image_data = typhoon_fw->data;
+        image_data = typhoon_fw_image;
         fHdr = (struct typhoon_file_header *) image_data;
 
         err = -ENOMEM;
-        image_dma = pci_map_single(pdev, (u8 *) typhoon_fw->data,
+        image_dma = pci_map_single(pdev, (u8 *) image_data,
                                    typhoon_fw->size, PCI_DMA_TODEVICE);
         if (pci_dma_mapping_error(pdev, image_dma)) {
                 printk(KERN_ERR "%s: no DMA mem for firmware\n", tp->name);
@@ -1469,7 +1480,7 @@ typhoon_download_firmware(struct typhoon *tp)
                 iowrite32(load_addr,
                           ioaddr + TYPHOON_REG_BOOT_DEST_ADDR);
                 iowrite32(0, ioaddr + TYPHOON_REG_BOOT_DATA_HI);
-                iowrite32(image_dma + (image_data - typhoon_fw->data),
+                iowrite32(image_dma + (image_data - typhoon_fw_image),
                           ioaddr + TYPHOON_REG_BOOT_DATA_LO);
                 typhoon_post_pci_writes(ioaddr);
                 iowrite32(TYPHOON_BOOTCMD_SEG_AVAILABLE,
@@ -2639,8 +2650,10 @@ typhoon_init(void)
 static void __exit
 typhoon_cleanup(void)
 {
-        if (typhoon_fw)
+        if (typhoon_fw) {
+                kfree(typhoon_fw_image);
                 release_firmware(typhoon_fw);
+        }
         pci_unregister_driver(&typhoon_driver);
 }