From e4c77070ad45fc940af1d7fb1e637c349e848951 Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oneukum@suse.com>
Date: Thu, 11 Mar 2021 14:01:26 +0100
Subject: [PATCH] USB: cdc-acm: downgrade message to debug
Git-commit: e4c77070ad45fc940af1d7fb1e637c349e848951
References: git-fixes
Patch-mainline: v5.12-rc6
This failure is so common that logging an error here amounts
to spamming log files.
Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Cc: stable <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20210311130126.15972-2-oneukum@suse.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/class/cdc-acm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index d684cf94b1c0..fd2fce072985 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -659,7 +659,8 @@ static void acm_port_dtr_rts(struct tty_port *port, int raise)
res = acm_set_control(acm, val);
if (res && (acm->ctrl_caps & USB_CDC_CAP_LINE))
- dev_err(&acm->control->dev, "failed to set dtr/rts\n");
+ /* This is broken in too many devices to spam the logs */
+ dev_dbg(&acm->control->dev, "failed to set dtr/rts\n");
}
static int acm_port_activate(struct tty_port *port, struct tty_struct *tty)
--
2.26.2