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| author | Michael Gernoth <michael@gernoth.net> | 2015-04-09 23:42:15 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-08-07 00:32:03 +0100 |
| commit | 6cc0e3dd8ad7858810b37cbf39f4e9f0debb0712 (patch) | |
| tree | b716830d96ab21e455d709370081402284747607 /arch/powerpc/kernel/cacheinfo.c | |
| parent | 83911b9e069169fffd82212f478952d474ee1e8d (diff) | |
| download | kernel_samsung_smdk4412-6cc0e3dd8ad7858810b37cbf39f4e9f0debb0712.zip kernel_samsung_smdk4412-6cc0e3dd8ad7858810b37cbf39f4e9f0debb0712.tar.gz kernel_samsung_smdk4412-6cc0e3dd8ad7858810b37cbf39f4e9f0debb0712.tar.bz2 | |
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: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch/powerpc/kernel/cacheinfo.c')
0 files changed, 0 insertions, 0 deletions