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bna: fix firmware loading on big-endian machines

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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>
This commit is contained in:
Ivan Vecera 2015-05-28 23:10:06 +02:00 • committed by David S. Miller
parent 50dce303d0
commit e236b95423
1 changed files with 7 additions and 0 deletions
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7
drivers/net/ethernet/brocade/bna/cna_fwimg.c
View file

@ -30,6 +30,7 @@ cna_read_firmware(struct pci_dev *pdev, u32 **bfi_image,
u32 *bfi_image_size, char *fw_name) u32 *bfi_image_size, char *fw_name)
{ {
const struct firmware *fw; const struct firmware *fw;
u32 n;
if (request_firmware(&fw, fw_name, &pdev->dev)) { if (request_firmware(&fw, fw_name, &pdev->dev)) {
pr_alert("Can't locate firmware %s\n", fw_name); 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_image_size = fw->size/sizeof(u32);
bfi_fw = fw; 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; return *bfi_image;
error: error:
return NULL; return NULL;