Commit 796eed4b authored by Chunfeng Yun's avatar Chunfeng Yun Committed by Greg Kroah-Hartman
Browse files

usb: early: convert to readl_poll_timeout_atomic() 



Use readl_poll_timeout_atomic() to simplify code

Cc: Lu Baolu <baolu.lu@linux.intel.com>
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Reviewed-by: default avatarJann Horn <jannh@google.com>
Signed-off-by: default avatarChunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0d12658d

drivers/usb/early/xhci-dbc.c

+4 −10
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/pci_ids.h>

#include <linux/memblock.h>

#include <linux/io.h>

#include <linux/iopoll.h>

#include <asm/pci-direct.h>

#include <asm/fixmap.h>

#include <linux/bcd.h>
@@ -135,16 +136,9 @@ static int handshake(void __iomem *ptr, u32 mask, u32 done, int wait, int delay) 
{

	u32 result;



	do {

		result = readl(ptr);

		result &= mask;

		if (result == done)

			return 0;

		udelay(delay);

		wait -= delay;

	} while (wait > 0);



	return -ETIMEDOUT;

	return readl_poll_timeout_atomic(ptr, result,

					 ((result & mask) == done),

					 delay, wait);

}



static void __init xdbc_bios_handoff(void)