diff options
Diffstat (limited to 'meta/recipes-multimedia/alsa/alsa-lib/0001-pcm_plugin-fix-appl-pointer-not-correct-when-mmap_co.patch')
| -rwxr-xr-x | meta/recipes-multimedia/alsa/alsa-lib/0001-pcm_plugin-fix-appl-pointer-not-correct-when-mmap_co.patch | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/meta/recipes-multimedia/alsa/alsa-lib/0001-pcm_plugin-fix-appl-pointer-not-correct-when-mmap_co.patch b/meta/recipes-multimedia/alsa/alsa-lib/0001-pcm_plugin-fix-appl-pointer-not-correct-when-mmap_co.patch new file mode 100755 index 0000000000..9fd69f301d --- /dev/null +++ b/meta/recipes-multimedia/alsa/alsa-lib/0001-pcm_plugin-fix-appl-pointer-not-correct-when-mmap_co.patch @@ -0,0 +1,137 @@ +From 7c424edd116e76eee6218a1e9a6ff6c4daaf2a4d Mon Sep 17 00:00:00 2001 +From: Shengjiu Wang <shengjiu.wang@freescale.com> +Date: Wed, 6 Apr 2016 19:02:12 +0800 +Subject: [PATCH] pcm_plugin: fix appl pointer not correct when mmap_commit() + return error + +When snd_pcm_mmap_commit() return error, the appl pointer is also updated. +which cause the avail_update()'s result wrong. +This patch move the snd_pcm_mmap_appl_forward() to the place when +snd_pcm_mmap_commit() is successfully returned. + +Upstream-Status: Submitted [https://patchwork.kernel.org/patch/8760881/] + +Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com> +Signed-off-by: Takashi Iwai <tiwai@suse.de> +--- + src/pcm/pcm_plugin.c | 48 ++++++++++++++++++++++++++++++++---------------- + 1 file changed, 32 insertions(+), 16 deletions(-) + +diff --git a/src/pcm/pcm_plugin.c b/src/pcm/pcm_plugin.c +index d007e8c..940491d 100644 +--- a/src/pcm/pcm_plugin.c ++++ b/src/pcm/pcm_plugin.c +@@ -279,18 +279,22 @@ static snd_pcm_sframes_t snd_pcm_plugin_write_areas(snd_pcm_t *pcm, + return -EPIPE; + } + snd_atomic_write_begin(&plugin->watom); +- snd_pcm_mmap_appl_forward(pcm, frames); + result = snd_pcm_mmap_commit(slave, slave_offset, slave_frames); + if (result > 0 && (snd_pcm_uframes_t)result != slave_frames) { + snd_pcm_sframes_t res; + res = plugin->undo_write(pcm, slave_areas, slave_offset + result, slave_frames, slave_frames - result); +- if (res < 0) ++ if (res < 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? (snd_pcm_sframes_t)xfer : res; ++ } + frames -= res; + } +- snd_atomic_write_end(&plugin->watom); +- if (result <= 0) ++ if (result <= 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? (snd_pcm_sframes_t)xfer : result; ++ } ++ snd_pcm_mmap_appl_forward(pcm, frames); ++ snd_atomic_write_end(&plugin->watom); + offset += frames; + xfer += frames; + size -= frames; +@@ -325,19 +329,23 @@ static snd_pcm_sframes_t snd_pcm_plugin_read_areas(snd_pcm_t *pcm, + return -EPIPE; + } + snd_atomic_write_begin(&plugin->watom); +- snd_pcm_mmap_appl_forward(pcm, frames); + result = snd_pcm_mmap_commit(slave, slave_offset, slave_frames); + if (result > 0 && (snd_pcm_uframes_t)result != slave_frames) { + snd_pcm_sframes_t res; + + res = plugin->undo_read(slave, areas, offset, frames, slave_frames - result); +- if (res < 0) ++ if (res < 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? (snd_pcm_sframes_t)xfer : res; ++ } + frames -= res; + } +- snd_atomic_write_end(&plugin->watom); +- if (result <= 0) ++ if (result <= 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? (snd_pcm_sframes_t)xfer : result; ++ } ++ snd_pcm_mmap_appl_forward(pcm, frames); ++ snd_atomic_write_end(&plugin->watom); + offset += frames; + xfer += frames; + size -= frames; +@@ -423,19 +431,23 @@ snd_pcm_plugin_mmap_commit(snd_pcm_t *pcm, + frames = plugin->write(pcm, areas, appl_offset, frames, + slave_areas, slave_offset, &slave_frames); + snd_atomic_write_begin(&plugin->watom); +- snd_pcm_mmap_appl_forward(pcm, frames); + result = snd_pcm_mmap_commit(slave, slave_offset, slave_frames); +- snd_atomic_write_end(&plugin->watom); + if (result > 0 && (snd_pcm_uframes_t)result != slave_frames) { + snd_pcm_sframes_t res; + + res = plugin->undo_write(pcm, slave_areas, slave_offset + result, slave_frames, slave_frames - result); +- if (res < 0) ++ if (res < 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? xfer : res; ++ } + frames -= res; + } +- if (result <= 0) ++ if (result <= 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? xfer : result; ++ } ++ snd_pcm_mmap_appl_forward(pcm, frames); ++ snd_atomic_write_end(&plugin->watom); + if (frames == cont) + appl_offset = 0; + else +@@ -490,19 +502,23 @@ static snd_pcm_sframes_t snd_pcm_plugin_avail_update(snd_pcm_t *pcm) + frames = (plugin->read)(pcm, areas, hw_offset, frames, + slave_areas, slave_offset, &slave_frames); + snd_atomic_write_begin(&plugin->watom); +- snd_pcm_mmap_hw_forward(pcm, frames); + result = snd_pcm_mmap_commit(slave, slave_offset, slave_frames); +- snd_atomic_write_end(&plugin->watom); + if (result > 0 && (snd_pcm_uframes_t)result != slave_frames) { + snd_pcm_sframes_t res; + + res = plugin->undo_read(slave, areas, hw_offset, frames, slave_frames - result); +- if (res < 0) ++ if (res < 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? (snd_pcm_sframes_t)xfer : res; ++ } + frames -= res; + } +- if (result <= 0) ++ if (result <= 0) { ++ snd_atomic_write_end(&plugin->watom); + return xfer > 0 ? (snd_pcm_sframes_t)xfer : result; ++ } ++ snd_pcm_mmap_hw_forward(pcm, frames); ++ snd_atomic_write_end(&plugin->watom); + if (frames == cont) + hw_offset = 0; + else +-- +1.9.1 + |