42 lines
1.2 KiB
Diff
Executable File
42 lines
1.2 KiB
Diff
Executable File
From a2892bf5db7520689fa9cb1d1589fa804bd9dc1a Mon Sep 17 00:00:00 2001
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From: Bing Song <bing.song@nxp.com>
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Date: Tue, 18 Aug 2020 15:26:51 +0800
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Subject: [PATCH] tinycompress: pass NULL buffer with 0 size to driver.
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The NULL buffer with 0 size to indecate driver drain input data with
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non-block mode. The defaul drain is block mode.
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upstream status: imx specific
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Signed-off-by: Bing Song <bing.song@nxp.com>
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---
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src/lib/compress.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/src/lib/compress.c b/src/lib/compress.c
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index bba4fcf..d66df0b 100644
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--- a/src/lib/compress.c
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+++ b/src/lib/compress.c
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@@ -315,7 +315,8 @@ int compress_write(struct compress *compress, const void *buf, unsigned int size
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fds.events = POLLOUT;
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/*TODO: treat auto start here first */
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- while (size) {
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+ /* NULL buffer with 0 size for non-block drain */
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+ do {
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if (ioctl(compress->fd, SNDRV_COMPRESS_AVAIL, &avail))
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return oops(compress, errno, "cannot get avail");
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@@ -357,7 +358,7 @@ int compress_write(struct compress *compress, const void *buf, unsigned int size
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size -= written;
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cbuf += written;
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total += written;
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- }
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+ } while (size);
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return total;
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}
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--
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2.17.1
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