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    ALSA: opti9xx: Fix conflicting driver object name · fb615499
    Takashi Iwai 提交于
    The recent commit to delay the release of kobject triggered NULL
    dereferences of opti9xx drivers.  The cause is that all
    snd-opti92x-ad1848, snd-opti92x-cs4231 and snd-opti93x drivers
    register the PnP card driver with the very same name, and also
    snd-opti92x-ad1848 and -cs4231 drivers register the ISA driver with
    the same name, too.  When these drivers are built in, quick
    "register-release-and-re-register" actions occur, and this results in
    Oops because of the same name is assigned to the kobject.
    
    The fix is simply to assign individual names.  As a bonus, by using
    KBUILD_MODNAME, the patch reduces more lines than it adds.
    
    The fix is based on the suggestion by Russell King.
    Reported-and-tested-by: NFengguang Wu <fengguang.wu@intel.com>
    Cc: <stable@vger.kernel.org>
    Signed-off-by: NTakashi Iwai <tiwai@suse.de>
    fb615499
opti92x-ad1848.c 30.2 KB