If stream is paused() during a compress_write() the poll() will return 0 or -EBADFD, or the write() will return -EBADFD. This is not an error so compress_write() should not pass an error code to the caller. It should abort the write and then return the number of bytes it had written up to that point.

--- compress.c | 10 ++++++++-- 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/compress.c b/compress.c index 478652a..92d1a80 100644 --- a/compress.c +++ b/compress.c @@ -340,10 +340,13 @@ int compress_write(struct compress *compress, const void *buf, unsigned int size if (avail.avail < compress->config.fragment_size) { /* nothing to write so wait */ ret = poll(&fds, 1, compress->max_poll_wait_ms); + /* A pause will cause -EBADFD or zero return from driver + * This is not an error, just stop writing + */ + if ((ret == 0) || (ret == -EBADFD)) + break; if (ret < 0) return oops(compress, errno, "poll error"); - if (ret == 0) - return oops(compress, -EPIPE, "Poll timeout, Broken Pipe"); if (fds.revents & POLLOUT) { if (ioctl(compress->fd, SNDRV_COMPRESS_AVAIL, &avail)) return oops(compress, errno, "cannot get avail"); @@ -362,6 +365,9 @@ int compress_write(struct compress *compress, const void *buf, unsigned int size else to_write = size; written = write(compress->fd, cbuf, to_write); + /* If play was paused the write returns -EBADFD */ + if (written == -EBADFD) + break; if (written < 0) return oops(compress, errno, "write failed!");