usb: udc: net2280: convert to readl_poll_timeout_atomic() (805ca9c2) · Commits · 戴 / test

Use readl_poll_timeout_atomic() to simplify code Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Felipe Balbi <balbi@kernel.org> Acked-by:

drivers/usb/gadget/udc/net2280.c

+10 −11

Original line number	Diff line number	Diff line
		@@ -52,6 +52,7 @@
		#include <linux/usb/gadget.h>
		#include <linux/prefetch.h>
		#include <linux/io.h>
		#include <linux/iopoll.h>

		#include <asm/byteorder.h>
		#include <asm/irq.h>
		@@ -360,18 +361,16 @@ print_err:
		static int handshake(u32 __iomem *ptr, u32 mask, u32 done, int usec)
		{
		u32 result;
		int ret;

		do {
		result = readl(ptr);
		if (result == ~(u32)0) /* "device unplugged" */
		ret = readl_poll_timeout_atomic(ptr, result,
		((result & mask) == done \|\|
		result == U32_MAX),
		1, usec);
		if (result == U32_MAX) /* device unplugged */
		return -ENODEV;
		result &= mask;
		if (result == done)
		return 0;
		udelay(1);
		usec--;
		} while (usec > 0);
		return -ETIMEDOUT;

		return ret;
		}

		static const struct usb_ep_ops net2280_ep_ops;