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-rw-r--r--arch/um/drivers/chan_kern.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 368d3e97dfd9..629b00e3b0b0 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -157,7 +157,7 @@ static void tty_receive_char(struct tty_struct *tty, char ch)
static int open_one_chan(struct chan *chan)
{
- int fd;
+ int fd, err;
if(chan->opened)
return 0;
@@ -168,6 +168,13 @@ static int open_one_chan(struct chan *chan)
chan->data, &chan->dev);
if(fd < 0)
return fd;
+
+ err = os_set_fd_block(fd, 0);
+ if (err) {
+ (*chan->ops->close)(fd, chan->data);
+ return err;
+ }
+
chan->fd = fd;
chan->opened = 1;
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