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staging: comedi: addi_apci_3501: remove "magic" numbers in apci3501_interrupt()

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Use register bit defines from addi_tcw.h to remove the "magic" numbers.

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 2015-08-12 13:25:47 -07:00 committed by Greg Kroah-Hartman
parent cd5d0ae481
commit 020e05e74d
1 changed files with 7 additions and 5 deletions
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12
drivers/staging/comedi/drivers/addi_apci_3501.c
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@ -262,11 +262,12 @@ static irqreturn_t apci3501_interrupt(int irq, void *d)
/* Disable Interrupt */
ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG);
ctrl &= 0xfffff9fd;
ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG |
ADDI_TCW_CTRL_IRQ_ENA);
outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG);
status = inl(devpriv->tcw + ADDI_TCW_IRQ_REG) & 0x1;
if (!status) {
status = inl(devpriv->tcw + ADDI_TCW_IRQ_REG);
if (!(status & ADDI_TCW_IRQ)) {
dev_err(dev->class_dev, "IRQ from unknown source\n");
return IRQ_NONE;
}
@ -274,8 +275,9 @@ static irqreturn_t apci3501_interrupt(int irq, void *d)
/* Enable Interrupt Send a signal to from kernel to user space */
send_sig(SIGIO, devpriv->tsk_Current, 0);
ctrl = inl(devpriv->tcw + ADDI_TCW_CTRL_REG);
ctrl &= 0xfffff9fd;
ctrl |= 1 << 1;
ctrl &= ~(ADDI_TCW_CTRL_GATE | ADDI_TCW_CTRL_TRIG |
ADDI_TCW_CTRL_IRQ_ENA);
ctrl |= ADDI_TCW_CTRL_IRQ_ENA;
outl(ctrl, devpriv->tcw + ADDI_TCW_CTRL_REG);
inl(devpriv->tcw + ADDI_TCW_STATUS_REG);