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>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 7dfda954aba1..cd8880d6be53 100644
--- 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;
                 }