USB: ti_usb_3410_5052: fix big-endian firmware handling

commit e877dd2f2581628b7119df707d4cf03d940cff49 upstream.

Fix endianess bugs in firmware handling introduced by commits cb7a7c6a
("ti_usb_3410_5052: add Multi-Tech modem support") and 05a3d905
("ti_usb_3410_5052: support alternate firmware") which made the driver
use the wrong firmware for certain devices on big-endian machines.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 5 insertions, 4 deletions

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index 01f79f11e5ad..32bdd5eac59b 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -1536,14 +1536,15 @@ static int ti_download_firmware(struct ti_device *tdev)
         char buf[32];
 
         /* try ID specific firmware first, then try generic firmware */
-        sprintf(buf, "ti_usb-v%04x-p%04x.fw", dev->descriptor.idVendor,
-            dev->descriptor.idProduct);
+        sprintf(buf, "ti_usb-v%04x-p%04x.fw",
+                        le16_to_cpu(dev->descriptor.idVendor),
+                        le16_to_cpu(dev->descriptor.idProduct));
         status = request_firmware(&fw_p, buf, &dev->dev);
 
         if (status != 0) {
                 buf[0] = '\0';
-                if (dev->descriptor.idVendor == MTS_VENDOR_ID) {
-                        switch (dev->descriptor.idProduct) {
+                if (le16_to_cpu(dev->descriptor.idVendor) == MTS_VENDOR_ID) {
+                        switch (le16_to_cpu(dev->descriptor.idProduct)) {
                         case MTS_CDMA_PRODUCT_ID:
                                 strcpy(buf, "mts_cdma.fw");
                                 break;