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usb: mtu3: cleanup with list_first_entry_or_null()

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

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Masahiro Yamada 2017-05-21 02:05:31 +09:00 • committed by Greg Kroah-Hartman
parent 4642d34a43
commit 9b4632ef3f
1 changed files with 2 additions and 6 deletions
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8
drivers/usb/mtu3/mtu3.h
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@ -356,12 +356,8 @@ static inline struct mtu3_ep *to_mtu3_ep(struct usb_ep *ep)
static inline struct mtu3_request *next_request(struct mtu3_ep *mep) static inline struct mtu3_request *next_request(struct mtu3_ep *mep)
{ {
struct list_head *queue = &mep->req_list; return list_first_entry_or_null(&mep->req_list, struct mtu3_request,
list);
if (list_empty(queue))
return NULL;
return list_first_entry(queue, struct mtu3_request, list);
} }
static inline void mtu3_writel(void __iomem *base, u32 offset, u32 data) static inline void mtu3_writel(void __iomem *base, u32 offset, u32 data)