usb: dwc2: gadget: consider all tx fifos

When matching tx fifo to endpoint, consider all fifos instead of
hard limiting to 8
Moreover, print error in case no fifo could be found.

Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 7dfda954aba1b110ea7c033dbc4a975743e72b7c..cd8880d6be53719ecda639dd5fbf5ac3b6318bbe 100644 (file)
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -2540,7 +2540,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
         */
        if (dir_in && hsotg->dedicated_fifos) {
                size = hs_ep->ep.maxpacket*hs_ep->mc;
-               for (i = 1; i <= 8; ++i) {
+               for (i = 1; i < hsotg->num_of_eps; ++i) {
                        if (hsotg->fifo_map & (1<<i))
                                continue;
                        val = readl(hsotg->regs + DPTXFSIZN(i));
@@ -2554,7 +2554,9 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep,
                        hs_ep->fifo_size = val;
                        break;
                }
-               if (i == 8) {
+               if (i == hsotg->num_of_eps) {
+                       dev_err(hsotg->dev,
+                               "%s: No suitable fifo found\n", __func__);
                        ret = -ENOMEM;
                        goto error;
                }