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authorTakashi Iwai <tiwai@suse.de>2014-01-10 14:20:42 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-02-06 11:08:15 -0800
commit6d6c9853a8484a22c3aaada5664b15afae1f31cd (patch)
treed89a2a402d8ad15a4338f0ba284ffa46fc45dda5 /Documentation/debugging-via-ohci1394.txt
parentebd58143b76236f0c4613fc0440858a52c6d8cdf (diff)
ALSA: Enable CONFIG_ZONE_DMA for smaller PCI DMA masks
commit 80ab8eae70e51d578ebbeb228e0f7a562471b8b7 upstream. The PCI devices with DMA masks smaller than 32bit should enable CONFIG_ZONE_DMA. Since the recent change of page allocator, page allocations via dma_alloc_coherent() with the limited DMA mask bits may fail more frequently, ended up with no available buffers, when CONFIG_ZONE_DMA isn't enabled. With CONFIG_ZONE_DMA, the system has much more chance to obtain such pages. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=68221 Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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