bna: fix firmware loading on big-endian machines

Firmware required by bna is stored in appropriate files as sequence
of LE32 integers. After loading by request_firmware() they need to be
byte-swapped on big-endian arches. Without this conversion the NIC
is unusable on big-endian machines.

Cc: Rasesh Mody <rasesh.mody@qlogic.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/net/ethernet/brocade/bna/cna_fwimg.c b/drivers/net/ethernet/brocade/bna/cna_fwimg.c
index ebf462d8082f..badea368bdc8 100644
--- a/drivers/net/ethernet/brocade/bna/cna_fwimg.c
+++ b/drivers/net/ethernet/brocade/bna/cna_fwimg.c
@@ -30,6 +30,7 @@ cna_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
                         u32 *bfi_image_size, char *fw_name)
 {
         const struct firmware *fw;
+        u32 n;
 
         if (request_firmware(&fw, fw_name, &pdev->dev)) {
                 pr_alert("Can't locate firmware %s\n", fw_name);
@@ -40,6 +41,12 @@ cna_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
         *bfi_image_size = fw->size/sizeof(u32);
         bfi_fw = fw;
 
+        /* Convert loaded firmware to host order as it is stored in file
+         * as sequence of LE32 integers.
+         */
+        for (n = 0; n < *bfi_image_size; n++)
+                le32_to_cpus(*bfi_image + n);
+
         return *bfi_image;
 error:
         return NULL;