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| author | Takashi Iwai <tiwai@suse.de> | 2014-01-10 14:20:42 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-06 11:08:15 -0800 |
| commit | 6d6c9853a8484a22c3aaada5664b15afae1f31cd (patch) | |
| tree | d89a2a402d8ad15a4338f0ba284ffa46fc45dda5 /Documentation/clk.txt | |
| parent | ebd58143b76236f0c4613fc0440858a52c6d8cdf (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>
Diffstat (limited to 'Documentation/clk.txt')
0 files changed, 0 insertions, 0 deletions