This variable in the private data is not necessary. Remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/rtd520.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c
index 95f6e80..6902353 100644
--- a/drivers/staging/comedi/drivers/rtd520.c
+++ b/drivers/staging/comedi/drivers/rtd520.c
@@ -414,7 +414,6 @@ struct rtdPrivate {
/* shadow registers affect other registers, but can't be read back */
/* The macros below update these on writes */
- u16 intClearMask; /* interrupt clear mask */
u8 utcCtrl[4]; /* crtl mode for 3 utc + read back */
unsigned fifoLen;
};
@@ -782,8 +781,7 @@ static irqreturn_t rtd_interrupt(int irq, /* interrupt number (ignored) */
goto abortTransfer;
/* clear the interrupt */
- devpriv->intClearMask = status;
- writew(devpriv->intClearMask, devpriv->las0 + LAS0_CLEAR);
+ writew(status, devpriv->las0 + LAS0_CLEAR);
readw(devpriv->las0 + LAS0_CLEAR);
return IRQ_HANDLED;
@@ -810,8 +808,7 @@ transferDone:
/* clear the interrupt */
status = readw(devpriv->las0 + LAS0_IT);
- devpriv->intClearMask = status;
- writew(devpriv->intClearMask, devpriv->las0 + LAS0_CLEAR);
+ writew(status, devpriv->las0 + LAS0_CLEAR);
readw(devpriv->las0 + LAS0_CLEAR);
fifoStatus = readl(devpriv->las0 + LAS0_ADC);
@@ -1122,8 +1119,7 @@ static int rtd_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
/* This doesn't seem to work. There is no way to clear an interrupt
that the priority controller has queued! */
- devpriv->intClearMask = ~0;
- writew(devpriv->intClearMask, devpriv->las0 + LAS0_CLEAR);
+ writew(~0, devpriv->las0 + LAS0_CLEAR);
readw(devpriv->las0 + LAS0_CLEAR);
/* TODO: allow multiple interrupt sources */
@@ -1302,8 +1298,7 @@ static void rtd_reset(struct comedi_device *dev)
udelay(100); /* needed? */
writel(0, devpriv->lcfg + PLX_INTRCS_REG);
writew(0, devpriv->las0 + LAS0_IT);
- devpriv->intClearMask = ~0;
- writew(devpriv->intClearMask, devpriv->las0 + LAS0_CLEAR);
+ writew(~0, devpriv->las0 + LAS0_CLEAR);
readw(devpriv->las0 + LAS0_CLEAR);
}
--
1.8.1.4
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