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staging: comedi: rtd520: remove intClearMask from private data

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This variable in the private data is not necessary. Remove it.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten
2013-03-26 15:01:19 -07:00
committed by Greg Kroah-Hartman
parent 4541b38175
commit dc49788d5f
1 changed files with 4 additions and 9 deletions
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13
drivers/staging/comedi/drivers/rtd520.c
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@@ -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 */
@@ -1308,8 +1304,7 @@ 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);
}