Hi,
this is a series of patches to fix the potential bugs in PCM ack callback using the pcm-indirect helper functions, and also to enhance the ack callback to be called properly in all appl_ptr updates, as similarly done by Pierre and Subhransu's patches.
The changes in the pcm-indirect helper code and its users are fairly trivial, just passing the error code back.
ARM/R-Pi people are Cc'ed because of bcm2835-audio driver.
Takashi
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Takashi Iwai (7): ALSA: pcm: Fix negative appl_ptr handling in pcm-indirect helpers ALSA: mips: Deliver indirect-PCM transfer error ALSA: cs46xx: Deliver indirect-PCM transfer error ALSA: emu10k1: Deliver indirect-PCM transfer error ALSA: rme32: Deliver indirect-PCM transfer error staging: bcm2835-audio: Deliver indirect-PCM transfer error ALSA: pcm: Call ack() whenever appl_ptr is updated
.../vc04_services/bcm2835-audio/bcm2835-pcm.c | 5 +-- include/sound/pcm-indirect.h | 10 ++++- sound/core/pcm_native.c | 46 +++++++++++++++++----- sound/mips/hal2.c | 14 +++---- sound/pci/cs46xx/cs46xx_lib.c | 8 ++-- sound/pci/emu10k1/emupcm.c | 4 +- sound/pci/rme32.c | 10 ++--- 7 files changed, 63 insertions(+), 34 deletions(-)