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| author | Pali Rohár <pali@kernel.org> | 2021-07-23 11:14:18 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2021-07-31 09:49:31 +0200 |
| commit | ec0fe5b84e0bdb94bb381a2b50092b24497c2091 (patch) | |
| tree | 3e93465ec1454e2b0247dcaff3a3265c47b01775 /tools/kwboot.c | |
| parent | 43fef8d4feeecf6356646317f725a0e211da0c1c (diff) | |
| download | u-boot-ec0fe5b84e0bdb94bb381a2b50092b24497c2091.zip u-boot-ec0fe5b84e0bdb94bb381a2b50092b24497c2091.tar.gz u-boot-ec0fe5b84e0bdb94bb381a2b50092b24497c2091.tar.bz2 | |
tools: kwboot: Fix restoring terminal
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 <pali@kernel.org>
Reviewed-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Chris Packham <judge.packham@gmail.com>
Tested-by: Chris Packham <judge.packham@gmail.com>
Diffstat (limited to 'tools/kwboot.c')
| -rw-r--r-- | tools/kwboot.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/tools/kwboot.c b/tools/kwboot.c index 1ba5ded..7fa742d 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; } |