[alsa-devel] [bisected] lx6464es fails to open a second time
tim at klingt.org
Tue Nov 22 01:00:39 CET 2011
hi all, especially brian and takashi,
some time ago, i've been developing the driver for the lx6464es ethersound
sound card, which has been included into the kernel for some time. however i
haven't been able to use it in kernels after 2.6.33.
today, i was able to bisect the issue and the first bad commit is:
Author: Brian Gerst <brgerst at gmail.com>
Date: Fri Feb 5 09:37:07 2010 -0500
x86: Clean up mem*io functions.
Iomem has no special significance on x86. Use the standard mem*
functions instead of trying to call other versions. Some fixups
are needed to match the function prototypes.
Signed-off-by: Brian Gerst <brgerst at gmail.com>
LKML-Reference: <1265380629-3212-6-git-send-email-brgerst at gmail.com>
Signed-off-by: H. Peter Anvin <hpa at zytor.com>
the problem was: the sound card could only be started once, but i haven't been
able to start it a second time, probably because the driver doesn't shut down
the device correctly.
the communication with the device is done by passing simple commands via
memcpy_fromio and memcpy_toio (compare sound/pci/lx6464es/lx_core.c, lines 75
to 99). any idea, what is going wrong there?
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