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USB: cdc-acm: downgrade message to debug

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commit e4c77070ad45fc940af1d7fb1e637c349e848951 upstream.

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>
This commit is contained in:
Oliver Neukum 2021-03-11 14:01:26 +01:00 committed by Greg Kroah-Hartman
parent 511302531e
commit 439a275211
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/class/cdc-acm.c
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@ -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)