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authorJiri Slaby <jslaby@suse.cz>2021-03-02 09:22:14 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2021-03-10 11:34:09 +0300
commit6bfbfcfc58005ee12d37b56a5e722618ef6bee8f (patch)
treea9cbd9e585a4d35f4df4950968a1dd7082efc7c8 /drivers/tty/vcc.c
parent10eb63e5a9b243181f0e87033875f94f3698afda (diff)
downloadlinux-6bfbfcfc58005ee12d37b56a5e722618ef6bee8f.tar.xz
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/vcc.c')
-rw-r--r--drivers/tty/vcc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c
index 3106df98558a..0a3a71e14df4 100644
--- a/drivers/tty/vcc.c
+++ b/drivers/tty/vcc.c
@@ -878,7 +878,7 @@ static int vcc_write_room(struct tty_struct *tty)
port = vcc_get_ne(tty->index);
if (unlikely(!port)) {
pr_err("VCC: write_room: Failed to find VCC port\n");
- return -ENODEV;
+ return 0;
}
num = VCC_BUFF_LEN - port->chars_in_buffer;