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usb: phy-ulpi-viewport: convert to readl_poll_timeout_atomic()

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Use readl_poll_timeout_atomic() to simplify code

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Link: https://lore.kernel.org/r/1600668815-12135-8-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 14:13:32 +08:00 committed by Greg Kroah-Hartman
parent 08305b45a4
commit a3e20fbd90
1 changed files with 3 additions and 9 deletions
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12
drivers/usb/phy/phy-ulpi-viewport.c
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@ -7,6 +7,7 @@
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/usb.h> #include <linux/usb.h>
#include <linux/io.h> #include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/usb/otg.h> #include <linux/usb/otg.h>
#include <linux/usb/ulpi.h> #include <linux/usb/ulpi.h>
@ -20,16 +21,9 @@
static int ulpi_viewport_wait(void __iomem *view, u32 mask) static int ulpi_viewport_wait(void __iomem *view, u32 mask)
{ {
unsigned long usec = 2000; u32 val;
while (usec--) { return readl_poll_timeout_atomic(view, val, !(val & mask), 1, 2000);
if (!(readl(view) & mask))
return 0;
udelay(1);
}
return -ETIMEDOUT;
} }
static int ulpi_viewport_read(struct usb_phy *otg, u32 reg) static int ulpi_viewport_read(struct usb_phy *otg, u32 reg)