Messages in this thread | | | Date | Wed, 28 Mar 2001 20:06:44 +0200 | From | Olaf Hering <> | Subject | 2.4.2 cs4232 is not SMP safe |
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Hi,
the current cs4232 driver is not smp safe, I get this in dmesg when I try to load it:
ad1848/cs4248 codec driver Copyright (C) by Hannu Savolainen 1993-1996 <Crystal audio controller (CS4236)> at 0x534 irq 5 dma 1,0 do_IRQ waiting for irq lock (holder=0)
wait_on_irq, CPU 0: irq: 1 [0 1] bh: 0 [0 0]
It jumps into xmon and I can exit from the debugger. A spin_lock(&mylock) call in attach_cs4232() leads to that output:
ad1848/cs4248 codec driver Copyright (C) by Hannu Savolainen 1993-1996 <Crystal audio controller (CS4236)> at 0x534 irq 5 dma 1,0 do_IRQ waiting for irq lock (holder=1)
But it still jumps into xmon. How can we make that driver SMP safe? There is no maintainer address in the files.
cantaloupe:~ # lsmod Module Size Used by cs4232 3376 0 (unused) ad1848 24288 0 [cs4232] uart401 7152 0 [cs4232] sound 73920 0 [cs4232 ad1848 uart401] soundcore 4784 4 [sound] nfsd 76928 4 (autoclean) autofs 13136 4 (autoclean) appletalk 28384 13 (autoclean) ipv6 204704 -1 (autoclean)
Gruss Olaf
-- $ man clone
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