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[15/21] staging: comedi/dawboard2000: use mdelay for large delays

Message ID 1366734653-488286-16-git-send-email-arnd@arndb.de (mailing list archive)
State New, archived
Headers show

Commit Message

Arnd Bergmann April 23, 2013, 4:30 p.m. UTC 
On ARM, it is not legal to pass values larger than 2ms into udelay(),
and mdelay() must be used instead, to avoid this build error:

ERROR: "__bad_udelay" [drivers/staging/comedi/drivers/daqboard2000.ko]
undefined!

On a related note, any use of mdelay() or large udelay() numbers should
be carefully reviewed, and replaced with msleep() or a different
implementation that does not rely on delaying the work.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/comedi/drivers/daqboard2000.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)
diff mbox

Patch

diff --git a/drivers/staging/comedi/drivers/daqboard2000.c b/drivers/staging/comedi/drivers/daqboard2000.c
index 50b450f..b213e36 100644
--- a/drivers/staging/comedi/drivers/daqboard2000.c
+++ b/drivers/staging/comedi/drivers/daqboard2000.c
@@ -462,9 +462,9 @@  static void daqboard2000_resetLocalBus(struct comedi_device *dev)
 	struct daqboard2000_private *devpriv = dev->private;
 
 	writel(DAQBOARD2000_SECRLocalBusHi, devpriv->plx + 0x6c);
-	udelay(10000);
+	mdelay(10);
 	writel(DAQBOARD2000_SECRLocalBusLo, devpriv->plx + 0x6c);
-	udelay(10000);
+	mdelay(10);
 }
 
 static void daqboard2000_reloadPLX(struct comedi_device *dev)
@@ -472,11 +472,11 @@  static void daqboard2000_reloadPLX(struct comedi_device *dev)
 	struct daqboard2000_private *devpriv = dev->private;
 
 	writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
-	udelay(10000);
+	mdelay(10);
 	writel(DAQBOARD2000_SECRReloadHi, devpriv->plx + 0x6c);
-	udelay(10000);
+	mdelay(10);
 	writel(DAQBOARD2000_SECRReloadLo, devpriv->plx + 0x6c);
-	udelay(10000);
+	mdelay(10);
 }
 
 static void daqboard2000_pulseProgPin(struct comedi_device *dev)
@@ -484,9 +484,9 @@  static void daqboard2000_pulseProgPin(struct comedi_device *dev)
 	struct daqboard2000_private *devpriv = dev->private;
 
 	writel(DAQBOARD2000_SECRProgPinHi, devpriv->plx + 0x6c);
-	udelay(10000);
+	mdelay(10);
 	writel(DAQBOARD2000_SECRProgPinLo, devpriv->plx + 0x6c);
-	udelay(10000);	/* Not in the original code, but I like symmetry... */
+	mdelay(10);	/* Not in the original code, but I like symmetry... */
 }
 
 static int daqboard2000_pollCPLD(struct comedi_device *dev, int mask)