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usb: dwc2: cleanup with list_first_entry_or_null()

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The combo of list_empty() check and return list_first_entry()
can be replaced with list_first_entry_or_null().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Masahiro Yamada 2016-09-19 01:03:13 +09:00 committed by Felipe Balbi
parent 3f5ad8640c
commit ffc4b4067e
1 changed files with 2 additions and 4 deletions
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6
drivers/usb/dwc2/gadget.c
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@ -1099,10 +1099,8 @@ static int dwc2_hsotg_ep_sethalt(struct usb_ep *ep, int value, bool now);
*/ */
static struct dwc2_hsotg_req *get_ep_head(struct dwc2_hsotg_ep *hs_ep) static struct dwc2_hsotg_req *get_ep_head(struct dwc2_hsotg_ep *hs_ep)
{ {
if (list_empty(&hs_ep->queue)) return list_first_entry_or_null(&hs_ep->queue, struct dwc2_hsotg_req,
return NULL; queue);
return list_first_entry(&hs_ep->queue, struct dwc2_hsotg_req, queue);
} }
/** /**