usb: dwc3: replace hard-coded constant in DWC3_GCTL_SCALEDOWN(3)

Define DWC3_GCTL_SCALEDOWN_MASK and use it in place of
DWC3_GCTL_SCALEDOWN(3).

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 3fd4e84..fd6917b 100644 (file)
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -350,7 +350,7 @@ static int __devinit dwc3_core_init(struct dwc3 *dwc)
        dwc3_cache_hwparams(dwc);
 
        reg = dwc3_readl(dwc->regs, DWC3_GCTL);
-       reg &= ~DWC3_GCTL_SCALEDOWN(3);
+       reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
        reg &= ~DWC3_GCTL_DISSCRAMBLE;
 
        switch (DWC3_GHWPARAMS1_EN_PWROPT(dwc->hwparams.hwparams1)) {

diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
index 81d1c0a..f124643 100644 (file)
--- a/drivers/usb/dwc3/core.h
+++ b/drivers/usb/dwc3/core.h
@@ -161,6 +161,7 @@
 
 #define DWC3_GCTL_CORESOFTRESET        (1 << 11)
 #define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
+#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
 #define DWC3_GCTL_DISSCRAMBLE  (1 << 3)
 #define DWC3_GCTL_DSBLCLKGTNG  (1 << 0)