lkml.org 
[lkml]   [2018]   [Feb]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Date
    Subject[PATCH 3.2 080/140] ALSA: pcm: Add missing error checks in OSS emulation plugin builder
    3.2.100-rc1 review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Takashi Iwai <tiwai@suse.de>

    commit 6708913750344a900f2e73bfe4a4d6dbbce4fe8d upstream.

    In the OSS emulation plugin builder where the frame size is parsed in
    the plugin chain, some places miss the possible errors returned from
    the plugin src_ or dst_frames callback.

    This patch papers over such places.

    Signed-off-by: Takashi Iwai <tiwai@suse.de>
    Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
    ---
    sound/core/oss/pcm_plugin.c | 14 +++++++++++---
    1 file changed, 11 insertions(+), 3 deletions(-)

    --- a/sound/core/oss/pcm_plugin.c
    +++ b/sound/core/oss/pcm_plugin.c
    @@ -589,18 +589,26 @@ snd_pcm_sframes_t snd_pcm_plug_write_tra
    snd_pcm_sframes_t frames = size;

    plugin = snd_pcm_plug_first(plug);
    - while (plugin && frames > 0) {
    + while (plugin) {
    + if (frames <= 0)
    + return frames;
    if ((next = plugin->next) != NULL) {
    snd_pcm_sframes_t frames1 = frames;
    - if (plugin->dst_frames)
    + if (plugin->dst_frames) {
    frames1 = plugin->dst_frames(plugin, frames);
    + if (frames1 <= 0)
    + return frames1;
    + }
    if ((err = next->client_channels(next, frames1, &dst_channels)) < 0) {
    return err;
    }
    if (err != frames1) {
    frames = err;
    - if (plugin->src_frames)
    + if (plugin->src_frames) {
    frames = plugin->src_frames(plugin, frames1);
    + if (frames <= 0)
    + return frames;
    + }
    }
    } else
    dst_channels = NULL;
    \
     
     \ /
      Last update: 2018-02-28 18:25    [W:4.090 / U:0.280 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site