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usb: gadget: net2280: use swap() instead of open coding it

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Address the following coccicheck warning:
drivers/usb/gadget/udc/net2280.c:940:20-21: WARNING opportunity for swap().
drivers/usb/gadget/udc/net2280.c:944:25-26: WARNING opportunity for swap().

by using swap() for the swapping of variable values and drop the tmp
variables (`tmp` and `end`) that are not needed any more.

Signed-off-by: Guo Zhengkui <guozhengkui@vivo.com>
Link: https://lore.kernel.org/r/20220407100459.3605-1-guozhengkui@vivo.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Guo Zhengkui
2022-04-07 18:04:52 +08:00
committed by Greg Kroah-Hartman
parent b8a1988133
commit 67ec2c75f3
1 changed files with 3 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/usb/gadget/udc/net2280.c
+3 -11
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@@ -932,19 +932,11 @@ static void start_dma(struct net2280_ep *ep, struct net2280_request *req)
static inline void
queue_dma(struct net2280_ep *ep, struct net2280_request *req, int valid)
{
struct net2280_dma *end;
dma_addr_t tmp;
/* swap new dummy for old, link; fill and maybe activate */
end = ep->dummy;
ep->dummy = req->td;
req->td = end;
swap(ep->dummy, req->td);
swap(ep->td_dma, req->td_dma);
tmp = ep->td_dma;
ep->td_dma = req->td_dma;
req->td_dma = tmp;
end->dmadesc = cpu_to_le32 (ep->td_dma);
req->td->dmadesc = cpu_to_le32 (ep->td_dma);
fill_dma_desc(ep, req, valid);
}