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| author | Takashi Iwai <tiwai@suse.de> | 2018-08-12 00:33:34 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-11-21 11:27:33 +0300 |
| commit | a9d21a73909f3bce076ecdaed589640d001bc5b2 (patch) | |
| tree | 1440a94a9da0c4f01446be069c4f766c30878ea1 /sound/pci/hda/hda_controller.h | |
| parent | 7e41dd0f799dbe922cbcda56f2fdb0fbce6292ba (diff) | |
| download | linux-a9d21a73909f3bce076ecdaed589640d001bc5b2.tar.xz | |
ALSA: hda: Check the non-cached stream buffers more explicitly
[ Upstream commit 78c9be61c3a5cd9e2439fd27a5ffad73a81958c7 ]
Introduce a new flag, uc_buffer, to indicate that the controller
requires the non-cached pages for stream buffers, either as a
chip-specific requirement or specified via snoop=0 option.
This improves the code-readability.
Also, this patch fixes the incorrect behavior for C-Media chip where
the stream buffers were never handled as non-cached due to the check
of driver_type even if you pass snoop=0 option.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/pci/hda/hda_controller.h')
| -rw-r--r-- | sound/pci/hda/hda_controller.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_controller.h b/sound/pci/hda/hda_controller.h index b17539537b2e..55ec4470f6b6 100644 --- a/sound/pci/hda/hda_controller.h +++ b/sound/pci/hda/hda_controller.h @@ -151,6 +151,7 @@ struct azx { unsigned int msi:1; unsigned int probing:1; /* codec probing phase */ unsigned int snoop:1; + unsigned int uc_buffer:1; /* non-cached pages for stream buffers */ unsigned int align_buffer_size:1; unsigned int region_requested:1; unsigned int disabled:1; /* disabled by vga_switcheroo */ |