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Commit 6a51b1e5 authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
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cdc-acm: fix BREAK rx code path adding necessary calls 



commit 08dff274edda54310d6f1cf27b62fddf0f8d146e upstream.

Counting break events is nice but we should actually report them to
the tty layer.

Fixes: 5a6a62bd ("cdc-acm: add TIOCMIWAIT")
Signed-off-by: default avatarOliver Neukum <oneukum@suse.com>
Link: https://lore.kernel.org/r/20210311133714.31881-1-oneukum@suse.com


Cc: stable <stable@vger.kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 7c5ac98e

drivers/usb/class/cdc-acm.c

+3 −1
Original line number Diff line number Diff line
@@ -334,8 +334,10 @@ static void acm_ctrl_irq(struct urb *urb) 
			acm->iocount.dsr++;

		if (difference & ACM_CTRL_DCD)

			acm->iocount.dcd++;

		if (newctrl & ACM_CTRL_BRK)

		if (newctrl & ACM_CTRL_BRK) {

			acm->iocount.brk++;

			tty_insert_flip_char(&acm->port, 0, TTY_BREAK);

		}

		if (newctrl & ACM_CTRL_RI)

			acm->iocount.rng++;

		if (newctrl & ACM_CTRL_FRAMING)