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authorJiri Slaby <jslaby@suse.cz>2021-03-02 07:22:14 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-03-10 09:34:09 +0100
commit6bfbfcfc58005ee12d37b56a5e722618ef6bee8f (patch)
treea9cbd9e585a4d35f4df4950968a1dd7082efc7c8 /drivers/tty/ipwireless
parent10eb63e5a9b243181f0e87033875f94f3698afda (diff)
downloadlinux-6bfbfcfc58005ee12d37b56a5e722618ef6bee8f.tar.bz2
tty: make everyone's write_room return >= 0
The tty line disciplines don't expect tty_operations::write_room to return negative values. Fix the five drivers which violate this. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Link: https://lore.kernel.org/r/20210302062214.29627-44-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/ipwireless')
-rw-r--r--drivers/tty/ipwireless/tty.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
index 1836746991b5..99bb2f149ff5 100644
--- a/drivers/tty/ipwireless/tty.c
+++ b/drivers/tty/ipwireless/tty.c
@@ -235,10 +235,10 @@ static int ipw_write_room(struct tty_struct *linux_tty)
/* FIXME: Exactly how is the tty object locked here .. */
if (!tty)
- return -ENODEV;
+ return 0;
if (!tty->port.count)
- return -EINVAL;
+ return 0;
room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
if (room < 0)