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drivers/ipcc: enter/leave critical section should in pairs

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Signed-off-by: chao an <anchao@xiaomi.com>
This commit is contained in:
chao an
2022-09-07 20:17:55 +08:00
committed by Xiang Xiao
parent b6e76966b9
commit 7c6e4a7204
2 changed files with 24 additions and 17 deletions
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drivers/ipcc/ipcc_write.c
+7 -2
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@@ -142,9 +142,10 @@ ssize_t ipcc_write(FAR struct file *filep, FAR const char *buffer,
return ret;
}
flags = enter_critical_section();
for (nwritten = 0; ; )
{
flags = enter_critical_section();
#ifdef CONFIG_IPCC_BUFFERED
/* Buffered write, if buffer is empty try to write directly to
* IPCC memory, else buffer data in circbuf - it will be written
@@ -239,8 +240,11 @@ ssize_t ipcc_write(FAR struct file *filep, FAR const char *buffer,
*/
nxsem_post(&priv->exclsem);
if ((ret = nxsem_wait(&priv->txsem)))
{
leave_critical_section(flags);
/* We were interrupted by signal, return error or number
* of bytes written
*/
@@ -258,6 +262,7 @@ ssize_t ipcc_write(FAR struct file *filep, FAR const char *buffer,
*/
nxsem_wait(&priv->exclsem);
continue;
}
leave_critical_section(flags);
}