From 10eb63e5a9b243181f0e87033875f94f3698afda Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Tue, 2 Mar 2021 07:22:13 +0100 Subject: tty: make everyone's chars_in_buffer return >= 0 The tty line disciplines don't expect tty_operations::chars_in_buffer to return negative values. Fix the two drivers which violate this. Signed-off-by: Jiri Slaby Link: https://lore.kernel.org/r/20210302062214.29627-43-jslaby@suse.cz Signed-off-by: Greg Kroah-Hartman --- drivers/tty/vcc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/tty/vcc.c') diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c index 04a792749816..3106df98558a 100644 --- a/drivers/tty/vcc.c +++ b/drivers/tty/vcc.c @@ -896,7 +896,7 @@ static int vcc_chars_in_buffer(struct tty_struct *tty) port = vcc_get_ne(tty->index); if (unlikely(!port)) { pr_err("VCC: chars_in_buffer: Failed to find VCC port\n"); - return -ENODEV; + return 0; } num = port->chars_in_buffer; -- cgit v1.2.3