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Ian Abbott ba45b48d9b staging: comedi: adl_pci7x3x: fix digital output on PCI-7230

commit ad83dbd974 upstream.

The "adl_pci7x3x" driver replaced the "adl_pci7230" and "adl_pci7432"
drivers in commits 8f567c373c ("staging: comedi: new adl_pci7x3x
driver") and 657f77d173 ("staging: comedi: remove adl_pci7230 and
adl_pci7432 drivers").  Although the new driver code agrees with the
user manuals for the respective boards, digital outputs stopped working
on the PCI-7230.  This has 16 digital output channels and the previous
adl_pci7230 driver shifted the 16 bit output state left by 16 bits
before writing to the hardware register.  The new adl_pci7x3x driver
doesn't do that.  Fix it in `adl_pci7x3x_do_insn_bits()` by checking
for the special case of the subdevice having only 16 channels and
duplicating the 16 bit output state into both halves of the 32-bit
register.  That should work both for what the board actually does and
for what the user manual says it should do.

Fixes: 8f567c373c ("staging: comedi: new adl_pci7x3x driver")
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2015-10-22 14:37:50 -07:00

drivers

staging: comedi: adl_pci7x3x: fix digital output on PCI-7230

2015-10-22 14:37:50 -07:00

kcomedilib

staging: comedi: use EXPORT_SYMBOL_GPL() for all exported symbols

2013-04-12 15:09:59 -07:00

comedi_buf.c

staging: comedi: complain if dma buffer allocation not supported

2013-05-13 17:38:48 -04:00

comedi_compat32.c

staging: comedi: comedi_compat32.c: fix COMEDI_CMD copy back