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| author | H Hartley Sweeten | 2015-10-12 20:01:35 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2015-10-13 19:24:41 +0200 |
| commit | fff5b04fdf238a82fa1dce0d31eeea133b3e580a (patch) | |
| tree | fd2a5e37bd4cd6dcd093de8fe418a7a5cc03dd67 /drivers/staging/comedi | |
| parent | staging: comedi: adv_pci1710: tidy up PCI1720_* register defines (diff) | |
| download | kernel-qcow2-linux-fff5b04fdf238a82fa1dce0d31eeea133b3e580a.tar.gz kernel-qcow2-linux-fff5b04fdf238a82fa1dce0d31eeea133b3e580a.tar.xz kernel-qcow2-linux-fff5b04fdf238a82fa1dce0d31eeea133b3e580a.zip | |
staging: comedi: adv_pci1710: rename private data member 'ai_et_MuxVal'
Rename thie CamelCase member of the private data. Add a comment in
the interrupt handler to clarify why the channel interval is updated
again.
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>
Diffstat (limited to 'drivers/staging/comedi')
| -rw-r--r-- | drivers/staging/comedi/drivers/adv_pci1710.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c b/drivers/staging/comedi/drivers/adv_pci1710.c index 6382c2601502..399c511cfe0a 100644 --- a/drivers/staging/comedi/drivers/adv_pci1710.c +++ b/drivers/staging/comedi/drivers/adv_pci1710.c @@ -226,8 +226,8 @@ struct pci1710_private { unsigned int max_samples; unsigned int ctrl; /* control register value */ unsigned int ctrl_ext; /* used to switch from TRIG_EXT to TRIG_xxx */ + unsigned int mux_ext; /* used to set the channel interval to scan */ unsigned char ai_et; - unsigned int ai_et_MuxVal; unsigned int act_chanlist[32]; /* list of scanned channel */ unsigned char saved_seglen; /* len of the non-repeating chanlist */ unsigned char da_ranges; /* copy of D/A outpit range register */ @@ -331,8 +331,8 @@ static void pci171x_ai_setup_chanlist(struct comedi_device *dev, devpriv->act_chanlist[i] = CR_CHAN(chanlist[i]); /* select channel interval to scan */ - devpriv->ai_et_MuxVal = first_chan | (last_chan << 8); - outw(devpriv->ai_et_MuxVal, dev->iobase + PCI171X_MUX_REG); + devpriv->mux_ext = first_chan | (last_chan << 8); + outw(devpriv->mux_ext, dev->iobase + PCI171X_MUX_REG); } static int pci171x_ai_eoc(struct comedi_device *dev, @@ -623,7 +623,8 @@ static irqreturn_t interrupt_service_pci1710(int irq, void *d) devpriv->ctrl = devpriv->ctrl_ext; outb(0, dev->iobase + PCI171X_CLRFIFO_REG); outb(0, dev->iobase + PCI171X_CLRINT_REG); - outw(devpriv->ai_et_MuxVal, dev->iobase + PCI171X_MUX_REG); + /* no sample on this interrupt; reset the channel interval */ + outw(devpriv->mux_ext, dev->iobase + PCI171X_MUX_REG); outw(devpriv->ctrl, dev->iobase + PCI171X_CTRL_REG); comedi_8254_pacer_enable(dev->pacer, 1, 2, true); return IRQ_HANDLED; |