Commit 8c6a2231 authored Jul 08, 2020 by Johan Hovold

USB: serial: only process sysrq when enabled



Do not set the sysrq timestamp unless CONFIG_MAGIC_SYSRQ is enabled to
avoid unnecessary per-character processing for consoles.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>

parent 37ae2315

drivers/usb/serial/generic.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -594,7 +594,7 @@ EXPORT_SYMBOL_GPL(usb_serial_handle_sysrq_char);

		int usb_serial_handle_break(struct usb_serial_port *port)
		{
		if (!port->port.console)
		if (!port->port.console \|\| !IS_ENABLED(CONFIG_MAGIC_SYSRQ))
		return 0;

		if (!port->sysrq) {

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