diff mbox series

[1/6] usb: dwc3: gadget: combine return points into a single one

Message ID 20240412202611.3565052-2-alexander.sverdlin@siemens.com
State New
Delegated to: Marek Vasut
Headers show
Series usb: dwc3: gadget: avoid EP command timeout | expand

Commit Message

Sverdlin, Alexander April 12, 2024, 8:26 p.m. UTC 
From: Felipe Balbi <felipe.balbi@linux.intel.com>

Upstream Linux commit c0ca324d09a0.

dwc3_send_gadget_ep_cmd() had three return
points. That becomes a pain to track when we need to
debug something or if we need to add more code
before returning.

Let's combine all three return points into a single
one just by introducing a local 'ret' variable.

Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@siemens.com>
---
 drivers/usb/dwc3/gadget.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 69d9fe40e2f87..17c19285f1c24 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -302,6 +302,7 @@  int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 {
 	u32			timeout = 500;
 	u32			reg;
+	int			ret = -EINVAL;
 
 	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR0(ep), params->param0);
 	dwc3_writel(dwc->regs, DWC3_DEPCMDPAR1(ep), params->param1);
@@ -313,7 +314,8 @@  int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 		if (!(reg & DWC3_DEPCMD_CMDACT)) {
 			dev_vdbg(dwc->dev, "Command Complete --> %d\n",
 					DWC3_DEPCMD_STATUS(reg));
-			return 0;
+			ret = 0;
+			break;
 		}
 
 		/*
@@ -321,11 +323,15 @@  int dwc3_send_gadget_ep_cmd(struct dwc3 *dwc, unsigned ep,
 		 * interrupt context.
 		 */
 		timeout--;
-		if (!timeout)
-			return -ETIMEDOUT;
+		if (!timeout) {
+			ret = -ETIMEDOUT;
+			break;
+		}
 
 		udelay(1);
 	} while (1);
+
+	return ret;
 }
 
 static dma_addr_t dwc3_trb_dma_offset(struct dwc3_ep *dep,