From: Johan Hovold <johan@kernel.org>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.com>,
Dmitry Safonov <0x7f454c46@gmail.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Johan Hovold <johan@kernel.org>
Subject: [PATCH v2 3/3] serial: core: drop redundant sysrq checks
Date: Wed, 10 Jun 2020 17:22:32 +0200 [thread overview]
Message-ID: <20200610152232.16925-4-johan@kernel.org> (raw)
In-Reply-To: <20200610152232.16925-1-johan@kernel.org>
The sysrq timestamp will never be set unless port->has_sysrq is set (see
uart_handle_break()) so drop the redundant checks that were added by
commit 1997e9dfdc84 ("serial_core: Un-ifdef sysrq SUPPORT_SYSRQ").
Signed-off-by: Johan Hovold <johan@kernel.org>
---
include/linux/serial_core.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 03fa7b967103..791f4844efeb 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -469,7 +469,7 @@ bool uart_try_toggle_sysrq(struct uart_port *port, unsigned int ch);
static inline int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
{
- if (!port->has_sysrq || !port->sysrq)
+ if (!port->sysrq)
return 0;
if (ch && time_before(jiffies, port->sysrq)) {
@@ -488,7 +488,7 @@ static inline int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch
static inline int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch)
{
- if (!port->has_sysrq || !port->sysrq)
+ if (!port->sysrq)
return 0;
if (ch && time_before(jiffies, port->sysrq)) {
--
2.26.2
next prev parent reply other threads:[~2020-06-10 15:23 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-10 15:22 [PATCH v2 0/3] serial: core: fix up sysrq regressions Johan Hovold
2020-06-10 15:22 ` [PATCH v2 1/3] Revert "serial: core: Refactor uart_unlock_and_check_sysrq()" Johan Hovold
2020-06-10 15:22 ` [PATCH v2 2/3] serial: core: fix sysrq overhead regression Johan Hovold
2020-06-10 16:24 ` Dmitry Safonov
2020-06-12 15:29 ` Johan Hovold
2020-06-12 15:42 ` Dmitry Safonov
2020-06-12 15:52 ` Dmitry Safonov
2020-06-10 15:22 ` Johan Hovold [this message]
2020-06-12 15:55 ` [PATCH v2 3/3] serial: core: drop redundant sysrq checks Dmitry Safonov
2020-06-10 16:21 ` [PATCH v2 0/3] serial: core: fix up sysrq regressions Andy Shevchenko
2020-06-12 15:31 ` Johan Hovold
2020-06-27 14:16 ` Greg Kroah-Hartman
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