diff options
author | Ian Abbott <abbotti@mev.co.uk> | 2015-08-11 13:05:10 +0100 |
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committer | Luis Henriques <luis.henriques@canonical.com> | 2015-09-28 10:21:41 +0100 |
commit | 05e638ae310a451dbb5be0dfbf352bbfd88464fb (patch) | |
tree | 5cbd95d9d8f99025f7159c5c31f9898b3e0d2f8b /block | |
parent | f9fe1ee65a78fce29c2d9f10677688b6dfe07921 (diff) |
staging: comedi: adl_pci7x3x: fix digital output on PCI-7230
commit ad83dbd974feb2e2a8cc071a1d28782bd4d2c70e upstream.
The "adl_pci7x3x" driver replaced the "adl_pci7230" and "adl_pci7432"
drivers in commits 8f567c373c4b ("staging: comedi: new adl_pci7x3x
driver") and 657f77d173d3 ("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: 8f567c373c4b ("staging: comedi: new adl_pci7x3x driver")
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions