[alsa-devel] a7839e96 (PNP: increase max resources) breaks my ALSA intel8x0 sound card

Avuton Olrich avuton at gmail.com
Sun Jan 27 15:40:40 CET 2008

With v2.6.24 my second ALSA sound device stopped working.

After bisection it says this was the offending commit.

a7839e960675b549f06209d18283d5cee2ce9261 is first bad commit
commit a7839e960675b549f06209d18283d5cee2ce9261
Author: Zhao Yakui <yakui.zhao at intel.com>
Date:   Wed Nov 28 16:21:21 2007 -0800

    PNP: increase the maximum number of resources

    On some systems the number of resources(IO,MEM) returnedy by PNP device is
    greater than the PNP constant, for example motherboard devices.  It brings
    that some resources can't be reserved and resource confilicts.  This will
    cause PCI resources are assigned wrongly in some systems, and cause hang.
    This is a regression since we deleted ACPI motherboard driver and use PNP
    system driver.

    [akpm at linux-foundation.org: fix text and coding-style a bit]
    Signed-off-by: Li Shaohua <shaohua.li at intel.com>
    Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
    Cc: Bjorn Helgaas <bjorn.helgaas at hp.com>
    Cc: Thomas Renninger <trenn at suse.de>
    Cc: <stable at kernel.org>
    Signed-off-by: Andrew Morton <akpm at linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds at linux-foundation.org>

The audio device is 00:1b.0 (see my lspci -vvv output), the other
audio device works fine.

http://avuton.googlepages.com/v2.6-before (dmesg revision before)
http://avuton.googlepages.com/v2.6-after (dmesg broken revision)
http://avuton.googlepages.com/config (from the broken revision)
 Anyone who quotes me in their sig is an idiot. -- Rusty Russell.

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