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| author | Michael Gernoth <michael@gernoth.net> | 2015-04-09 23:42:15 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-06 21:56:23 +0200 |
| commit | 6c6f8aac03406e6cba87267a6075b4e3340af892 (patch) | |
| tree | 5f6b1582bb2912f36cfd3c601f1ec54bddf06b39 /lib | |
| parent | e217fcc13682beef6eaafbb5a419e6b50ddf94b9 (diff) | |
ALSA: emu10k1: don't deadlock in proc-functions
commit 91bf0c2dcb935a87e5c0795f5047456b965fd143 upstream.
The functions snd_emu10k1_proc_spdif_read and snd_emu1010_fpga_read
acquire the emu_lock before accessing the FPGA. The function used
to access the FPGA (snd_emu1010_fpga_read) also tries to take
the emu_lock which causes a deadlock.
Remove the outer locking in the proc-functions (guarding only the
already safe fpga read) to prevent this deadlock.
[removed superfluous flags variables too -- tiwai]
Signed-off-by: Michael Gernoth <michael@gernoth.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions