Takashi Iwai 4d024fe8f8 ALSA: hda: Apply aligned MMIO access only conditionally ... It turned out that the recent simplification of HD-audio bus access helpers caused a regression on the virtual HD-audio device on QEMU with ARM platforms. The driver got a CORB/RIRB timeout and couldn't probe any codecs. The essential difference that caused a problem was the enforced aligned MMIO accesses by simplification. Since snd-hda-tegra driver is enabled on ARM, it enables CONFIG_SND_HDA_ALIGNED_MMIO, which makes the all HD-audio drivers using the aligned MMIO accesses. While this is mandatory for snd-hda-tegra, it seems that snd-hda-intel on ARM gets broken by this access pattern. For addressing the regression, this patch introduces a new flag, aligned_mmio, to hdac_bus object, and applies the aligned MMIO only when this flag is set. This change affects only platforms with CONFIG_SND_HDA_ALIGNED_MMIO set, i.e. mostly only for ARM platforms. Unfortunately the patch became a big bigger than it should be, just because the former calls didn't take hdac_bus object in the argument, hence we had to extend the call patterns. Fixes: 19abfefd4c ("ALSA: hda: Direct MMIO accesses") BugLink: https://bugzilla.opensuse.org/show_bug.cgi?id=1161152 Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200120104127.28985-1-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>		2020-01-20 11:42:15 +01:00
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drm	Merge branch 'asoc-5.5' into asoc-next	2019-11-22 19:56:02 +00:00
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net	devlink: disallow reload operation during device cleanup	2019-11-09 19:38:36 -08:00
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sound	ALSA: hda: Apply aligned MMIO access only conditionally	2020-01-20 11:42:15 +01:00
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trace	tcp: remove redundant new line from tcp_event_sk_skb	2019-11-09 19:41:50 -08:00
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