usb: isp1760-hcd: convert to readl_poll_timeout_atomic() (08305b45) · Commits · 戴 / test

Use readl_poll_timeout_atomic() to simplify code Signed-off-by:

drivers/usb/isp1760/isp1760-hcd.c

+9 −11

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@
		#include <linux/debugfs.h>
		#include <linux/uaccess.h>
		#include <linux/io.h>
		#include <linux/iopoll.h>
		#include <linux/mm.h>
		#include <linux/timer.h>
		#include <asm/unaligned.h>
		@@ -380,18 +381,15 @@ static int handshake(struct usb_hcd *hcd, u32 reg,
		u32 mask, u32 done, int usec)
		{
		u32 result;
		int ret;

		do {
		result = reg_read32(hcd->regs, reg);
		if (result == ~0)
		ret = readl_poll_timeout_atomic(hcd->regs + reg, result,
		((result & mask) == done \|\|
		result == U32_MAX), 1, usec);
		if (result == U32_MAX)
		return -ENODEV;
		result &= mask;
		if (result == done)
		return 0;
		udelay(1);
		usec--;
		} while (usec > 0);
		return -ETIMEDOUT;

		return ret;
		}

		/* reset a non-running (STS_HALT == 1) controller */