UML: console should handle spurious IRQS
The previous DEBUG_SHIRQ patch missed one case. The console doesn't
set its host descriptors non-blocking.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 368d3e9..629b00e 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -157,7 +157,7 @@
static int open_one_chan(struct chan *chan)
{
- int fd;
+ int fd, err;
if(chan->opened)
return 0;
@@ -168,6 +168,13 @@
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;