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usb: early: convert to readl_poll_timeout_atomic()

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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: Jann Horn <jannh@google.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1600668815-12135-1-git-send-email-chunfeng.yun@mediatek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chunfeng Yun 2020-09-21 14:13:25 +08:00 committed by Greg Kroah-Hartman
parent 0d12658dc1
commit 796eed4b23
1 changed files with 4 additions and 10 deletions
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14
drivers/usb/early/xhci-dbc.c
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@ -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)