usb: dwc3: gadget: combine return points into a single one
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>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20240412202611.3565052-2-alexander.sverdlin@siemens.com
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 4de007c..b4cc238 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -301,6 +301,7 @@
{
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);
@@ -312,7 +313,8 @@
if (!(reg & DWC3_DEPCMD_CMDACT)) {
dev_vdbg(dwc->dev, "Command Complete --> %d\n",
DWC3_DEPCMD_STATUS(reg));
- return 0;
+ ret = 0;
+ break;
}
/*
@@ -320,11 +322,15 @@
* 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,