From: Johan Hovold <johan@kernel.org>
To: linux-usb@vger.kernel.org
Cc: Johan Hovold <johan@kernel.org>
Subject: [PATCH 05/10] USB: serial: only process sysrq when enabled
Date: Wed, 8 Jul 2020 14:49:55 +0200 [thread overview]
Message-ID: <20200708125000.15659-6-johan@kernel.org> (raw)
In-Reply-To: <20200708125000.15659-1-johan@kernel.org>
Do not set the sysrq timestamp unless CONFIG_MAGIC_SYSRQ is enabled to
avoid unnecessary per-character processing for consoles.
Signed-off-by: Johan Hovold <johan@kernel.org>
---
drivers/usb/serial/generic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index 05a2a3aa3963..c5b35252c931 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -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) {
--
2.26.2
next prev parent reply other threads:[~2020-07-08 12:50 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-08 12:49 [PATCH 00/10] USB: serial: break and sysrq fixes and cleanups Johan Hovold
2020-07-08 12:49 ` [PATCH 01/10] USB: serial: ftdi_sio: make process-packet buffer unsigned Johan Hovold
2020-07-08 12:49 ` [PATCH 02/10] USB: serial: ftdi_sio: clean up receive processing Johan Hovold
2020-07-08 12:49 ` [PATCH 03/10] USB: serial: ftdi_sio: fix break and sysrq handling Johan Hovold
2020-07-08 12:49 ` [PATCH 04/10] USB: serial: only set sysrq timestamp for consoles Johan Hovold
2020-07-08 12:49 ` Johan Hovold [this message]
2020-07-08 12:49 ` [PATCH 06/10] USB: serial: inline sysrq dummy function Johan Hovold
2020-07-08 12:49 ` [PATCH 07/10] USB: serial: add sysrq break-handler dummy Johan Hovold
2020-07-08 12:49 ` [PATCH 08/10] USB: serial: drop unnecessary sysrq include Johan Hovold
2020-07-08 12:49 ` [PATCH 09/10] USB: serial: drop extern keyword from function declarations Johan Hovold
2020-07-08 12:50 ` [PATCH 10/10] USB: serial: drop redundant transfer-buffer casts Johan Hovold
2020-07-08 15:45 ` [PATCH 00/10] USB: serial: break and sysrq fixes and cleanups Greg KH
2020-07-09 7:23 ` Johan Hovold
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