X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=drivers%2Fusb%2Fhost%2Fxhci-rcar.c;h=9888ba7d85b6a7adb678cc0cd10ff6844858be56;hb=07281a257a6868b900da5de1eda808c9e20253f1;hp=1bc4fe7b8c7564453370d0d1046ae9902c47015e;hpb=cbecf716ca618fd44feda6bd9a64a8179d031fc5;p=linux-2.6-microblaze.git

diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c
index 1bc4fe7b8c75..9888ba7d85b6 100644
--- a/drivers/usb/host/xhci-rcar.c
+++ b/drivers/usb/host/xhci-rcar.c
@@ -134,6 +134,13 @@ static int xhci_rcar_download_firmware(struct usb_hcd *hcd)
 	const struct soc_device_attribute *attr;
 	const char *firmware_name;
 
+	/*
+	 * According to the datasheet, "Upon the completion of FW Download,
+	 * there is no need to write or reload FW".
+	 */
+	if (readl(regs + RCAR_USB3_DL_CTRL) & RCAR_USB3_DL_CTRL_FW_SUCCESS)
+		return 0;
+
 	attr = soc_device_match(rcar_quirks_match);
 	if (attr)
 		quirks = (uintptr_t)attr->data;