[PATCH net 1/3] bna: fix firmware loading on big-endian machines
From: Ivan Vecera <ivecera@redhat.com>
Date: 2015-05-28 21:10:05
Subsystem:
brocade bna 10 gigabit ethernet driver, networking drivers, the rest · Maintainers:
Rasesh Mody, Sudarsana Kalluru, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
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 <redacted> Signed-off-by: Ivan Vecera <ivecera@redhat.com> --- drivers/net/ethernet/brocade/bna/cna_fwimg.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/net/ethernet/brocade/bna/cna_fwimg.c b/drivers/net/ethernet/brocade/bna/cna_fwimg.c
index ebf462d..badea36 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;
--
2.3.6