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Date: Tue, 23 Apr 2013 18:30:47 +0200 From: Arnd Bergmann <arnd@...db.de> To: linux-arm-kernel@...ts.infradead.org Cc: linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>, H Hartley Sweeten <hsweeten@...ionengravers.com>, Ian Abbott <abbotti@....co.uk>, Greg Kroah-Hartman <gregkh@...uxfoundation.org> Subject: [PATCH 15/21] staging: comedi/dawboard2000: use mdelay for large delays 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@...db.de> Cc: H Hartley Sweeten <hsweeten@...ionengravers.com> Cc: Ian Abbott <abbotti@....co.uk> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/staging/comedi/drivers/daqboard2000.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) 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) -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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