USB: storage: properly handle the endian issues of idProduct

1. The idProduct is little endian, so make sure its value to be
compatible with the current CPU. Make no break on big endian processors.

Signed-off-by: fangxiaozhi <huananhu@huawei.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/storage/initializers.c b/drivers/usb/storage/initializers.c
index 16b0bf0..7ab9046 100644 (file)
--- a/drivers/usb/storage/initializers.c
+++ b/drivers/usb/storage/initializers.c
@@ -147,7 +147,7 @@ static int usb_stor_huawei_dongles_pid(struct us_data *us)
        int idProduct;
 
        idesc = &us->pusb_intf->cur_altsetting->desc;
-       idProduct = us->pusb_dev->descriptor.idProduct;
+       idProduct = le16_to_cpu(us->pusb_dev->descriptor.idProduct);
        /* The first port is CDROM,
         * means the dongle in the single port mode,
         * and a switch command is required to be sent. */
@@ -169,7 +169,7 @@ int usb_stor_huawei_init(struct us_data *us)
        int result = 0;
 
        if (usb_stor_huawei_dongles_pid(us)) {
-               if (us->pusb_dev->descriptor.idProduct >= 0x1446)
+               if (le16_to_cpu(us->pusb_dev->descriptor.idProduct) >= 0x1446)
                        result = usb_stor_huawei_scsi_init(us);
                else
                        result = usb_stor_huawei_feature_init(us);