usb: renesas_usbhs: replace udelay() with usleep_range()

According to Documentation/timers/timers-howto.txt, a driver should
use usleep_range() instead of udelay() on NON-ATOMIC CONTEXT if
"SLEEPING FOR ~USECS OR SMALL MSECS ( 10us - 20ms)".

Since the .hardware_init() and .power_ctrl() will run on NON-ATOMIC
CONTEXT, this patch replaces udelay() with usleep_range().

Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c
index aa38204..5e730e9 100644 (file)
--- a/drivers/usb/renesas_usbhs/rcar3.c
+++ b/drivers/usb/renesas_usbhs/rcar3.c
@@ -59,7 +59,7 @@ static int usbhs_rcar3_power_ctrl(struct platform_device *pdev,
        if (enable) {
                usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM);
                /* The controller on R-Car Gen3 needs to wait up to 45 usec */
-               udelay(45);
+               usleep_range(45, 90);
        } else {
                usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0);
        }

diff --git a/drivers/usb/renesas_usbhs/rza.c b/drivers/usb/renesas_usbhs/rza.c
index 5b28725..8c739bd 100644 (file)
--- a/drivers/usb/renesas_usbhs/rza.c
+++ b/drivers/usb/renesas_usbhs/rza.c
@@ -35,7 +35,7 @@ static int usbhs_rza1_hardware_init(struct platform_device *pdev)
 
        /* Enable USB PLL (NOTE: ch0 controls both ch0 and ch1) */
        usbhs_bset(priv, SYSCFG, UPLLE, UPLLE);
-       udelay(1000);
+       usleep_range(1000, 2000);
        usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM);
 
        return 0;