From: Pali Rohár <p...@kernel.org>
Call tcsetattr() only if the file descriptor is valid. It may be
invalidated by previous lines (if it is not a tty descriptor).
Signed-off-by: Pali Rohár <p...@kernel.org>
Reviewed-by: Marek Behún <marek.be...@nic.cz>
Reviewed-by: Stefan Roese <s...@denx.de>
Reviewed-by: Chris Packham <judge.pack...@gmail.com>
Tested-by: Chris Packham <judge.pack...@gmail.com>
---
tools/kwboot.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/tools/kwboot.c b/tools/kwboot.c
index 1ba5ded5d3..7fa742d84c 100644
--- a/tools/kwboot.c
+++ b/tools/kwboot.c
@@ -558,7 +558,8 @@ kwboot_terminal(int tty)
}
} while (quit[s] != 0);
- tcsetattr(in, TCSANOW, &otio);
+ if (in >= 0)
+ tcsetattr(in, TCSANOW, &otio);
out:
return rc;
}
--
2.31.1
