On Fri, 31 Jul 2020 04:41:54 +0200, Kaige Li wrote:
There's some issues that cause palyback without a sound on Loongson platform (3A3000 + 7A1000) with a Realtek ALC269 codec. After lengthy debugging sessions, we solved it by adding workaround.
Signed-off-by: Kaige Li likaige@loongson.cn
Thanks for the patch. But this can't be taken as is due to the design problem. Namely...
--- a/sound/hda/hdac_controller.c +++ b/sound/hda/hdac_controller.c @@ -9,6 +9,7 @@ #include <sound/core.h> #include <sound/hdaudio.h> #include <sound/hda_register.h> +#include "../pci/hda/hda_controller.h"
... here already suspicious, and ...
#include "local.h"
/* clear CORB read pointer properly */ @@ -42,6 +43,8 @@ static void azx_clear_corbrp(struct hdac_bus *bus) */ void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus) {
- struct azx *chip = bus_to_azx(bus);
... here you cast the hdac_bus object to its child class. This is disallowed, as it's a layer violation and would break if another child class like ASoC driver is used with this patch.
IOW, inside the code in sound/hda/*, you must not use the contents in sound/pci/hda/* and include/sound/hda_codec.h.
If any new workaround is needed, introduce a new flag in struct hdac_bus.
thanks,
Takashi