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usb: pci-quirks: convert to readl_poll_timeout_atomic()

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Use readl_poll_timeout_atomic() to simplify code

Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1600668815-12135-3-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 14:13:27 +08:00 committed by Greg Kroah-Hartman
parent 8f01cc875d
commit eeae3afba6
1 changed files with 4 additions and 9 deletions
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13
drivers/usb/host/pci-quirks.c
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@ -17,6 +17,7 @@
#include <linux/acpi.h> #include <linux/acpi.h>
#include <linux/dmi.h> #include <linux/dmi.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/iopoll.h>
#include "pci-quirks.h" #include "pci-quirks.h"
#include "xhci-ext-caps.h" #include "xhci-ext-caps.h"
@ -1012,15 +1013,9 @@ static int handshake(void __iomem *ptr, u32 mask, u32 done,
{ {
u32 result; u32 result;
do { return readl_poll_timeout_atomic(ptr, result,
result = readl(ptr); ((result & mask) == done),
result &= mask; delay_usec, wait_usec);
if (result == done)
return 0;
udelay(delay_usec);
wait_usec -= delay_usec;
} while (wait_usec > 0);
return -ETIMEDOUT;
} }
/* /*