[PATCH 1/6] usb: dwc3: replace hard-coded constant in DWC3_GCTL_SCALEDOWN(3)

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

Signed-off-by: Paul Zimmerman <paulz@xxxxxxxxxxxx>
---
 drivers/usb/dwc3/core.c |    2 +-
 drivers/usb/dwc3/core.h |    1 +
 2 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 3fd4e84..fd6917b 100644
--- 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 7c4e0b5..6c7945b 100644
--- 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)
 
-- 
1.7.4.4

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