mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-14 14:42:34 -04:00
Code Issues Packages Projects Releases Wiki Activity

staging: comedi: ii_pci20kc: save unmunged data for ao readback

Browse Source 
The unmunged data should be saved for readback not the munged data.

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
2014-08-25 16:04:30 -07:00
committed by Greg Kroah-Hartman
parent 42c7b55cce
commit c3c17d2ead
1 changed files with 3 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/staging/comedi/drivers/ii_pci20kc.c
View File

@@ -165,12 +165,14 @@ static int ii20k_ao_insn_write(struct comedi_device *dev,
struct ii20k_ao_private *ao_spriv = s->private;
void __iomem *iobase = ii20k_module_iobase(dev, s);
unsigned int chan = CR_CHAN(insn->chanspec);
unsigned int val = ao_spriv->last_data[chan];
unsigned int val;
int i;
for (i = 0; i < insn->n; i++) {
val = data[i];
ao_spriv->last_data[chan] = val;
/* munge data */
val += ((s->maxdata + 1) >> 1);
val &= s->maxdata;
@@ -180,8 +182,6 @@ static int ii20k_ao_insn_write(struct comedi_device *dev,
writeb(0x00, iobase + II20K_AO_STRB_REG(chan));
}
ao_spriv->last_data[chan] = val;
return insn->n;
}