Use readl_poll_timeout_atomic() to simplify code
Cc: Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx>
Signed-off-by: Chunfeng Yun <chunfeng.yun@xxxxxxxxxxxx>
---
v2~v3: no changes
---
drivers/usb/host/pci-quirks.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c
index b8961c0..8920566 100644
--- a/drivers/usb/host/pci-quirks.c
+++ b/drivers/usb/host/pci-quirks.c
@@ -16,6 +16,7 @@
#include <linux/export.h>
#include <linux/acpi.h>
#include <linux/dmi.h>
+#include <linux/iopoll.h>
#include <soc/bcm2835/raspberrypi-firmware.h>
@@ -1012,15 +1013,9 @@ static int handshake(void __iomem *ptr, u32 mask, u32 done,
{
u32 result;
- do {
- result = readl(ptr);
- result &= mask;
- if (result == done)
- return 0;
- udelay(delay_usec);
- wait_usec -= delay_usec;
- } while (wait_usec > 0);
- return -ETIMEDOUT;
+ return readl_poll_timeout_atomic(ptr, result,
+ ((result & mask) == done),
+ delay_usec, wait_usec);
}
/*
--
1.9.1
