From: Soren Brinkmann <soren.brinkmann@xilinx.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>
Cc: Michal Simek <michal.simek@xilinx.com>,
linux-serial@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
Peter Hurley <peter@hurleysoftware.com>,
Soren Brinkmann <soren.brinkmann@xilinx.com>
Subject: [PATCH LINUX v3 06/10] tty: xuartps: Keep lock for whole ISR
Date: Sat, 21 Nov 2015 18:59:28 -0800 [thread overview]
Message-ID: <1448161172-19717-7-git-send-email-soren.brinkmann@xilinx.com> (raw)
In-Reply-To: <1448161172-19717-1-git-send-email-soren.brinkmann@xilinx.com>
The RX path in the interrupt handler released a lock unnecessarily.
Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
---
drivers/tty/serial/xilinx_uartps.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c
index 6ffd3bbe3e18..ab3995d00973 100644
--- a/drivers/tty/serial/xilinx_uartps.c
+++ b/drivers/tty/serial/xilinx_uartps.c
@@ -265,9 +265,7 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id)
uart_insert_char(port, isrstatus, CDNS_UART_IXR_OVERRUN,
data, status);
}
- spin_unlock(&port->lock);
tty_flip_buffer_push(&port->state->port);
- spin_lock(&port->lock);
}
/* Dispatch an appropriate handler */
--
2.6.3.3.g9bb996a
next prev parent reply other threads:[~2015-11-22 2:59 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-22 2:59 [PATCH LINUX v3 00/10] tty: xuartps: Fix lock ups Soren Brinkmann
2015-11-22 2:59 ` [PATCH LINUX v3 01/10] tty: xuartps: Beautify read-modify writes Soren Brinkmann
2015-12-05 17:04 ` Peter Hurley
2015-12-05 17:23 ` Moritz Fischer
2015-11-22 2:59 ` [PATCH LINUX v3 02/10] tty: xuartps: Use spinlock to serialize HW access Soren Brinkmann
2015-12-05 17:05 ` Peter Hurley
2015-11-22 2:59 ` [PATCH LINUX v3 03/10] tty: xuartps: Don't consider circular buffer when enabling transmitter Soren Brinkmann
2015-12-05 17:17 ` Peter Hurley
2015-11-22 2:59 ` [PATCH LINUX v3 04/10] tty: xuartps: Clear interrupt status register in shutdown Soren Brinkmann
2015-12-05 17:19 ` Peter Hurley
2015-12-05 17:25 ` Moritz Fischer
2015-11-22 2:59 ` [PATCH LINUX v3 05/10] tty: xuartps: Improve startup function Soren Brinkmann
2015-12-05 17:21 ` Peter Hurley
2015-12-05 21:47 ` Sören Brinkmann
2015-11-22 2:59 ` Soren Brinkmann [this message]
2015-12-05 17:23 ` [PATCH LINUX v3 06/10] tty: xuartps: Keep lock for whole ISR Peter Hurley
2015-11-22 2:59 ` [PATCH LINUX v3 07/10] tty: xuartps: Acquire port lock for shutdown Soren Brinkmann
2015-12-05 17:23 ` Peter Hurley
2015-11-22 2:59 ` [PATCH LINUX v3 08/10] tty: xuartps: Move RX path into helper function Soren Brinkmann
2015-12-05 17:40 ` Peter Hurley
2015-12-05 21:49 ` Sören Brinkmann
2015-11-22 2:59 ` [PATCH LINUX v3 09/10] tty: xuartps: Only handle RX IRQs when RX is enabled Soren Brinkmann
2015-12-05 17:43 ` Peter Hurley
2015-12-05 22:19 ` Sören Brinkmann
2015-11-22 2:59 ` [PATCH LINUX v3 10/10] tty: xuartps: Cleanup: Reformat if-else Soren Brinkmann
2015-12-05 17:49 ` [PATCH LINUX v3 00/10] tty: xuartps: Fix lock ups Peter Hurley
2015-12-05 22:02 ` Sören Brinkmann
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1448161172-19717-7-git-send-email-soren.brinkmann@xilinx.com \
--to=soren.brinkmann@xilinx.com \
--cc=gregkh@linuxfoundation.org \
--cc=jslaby@suse.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-serial@vger.kernel.org \
--cc=michal.simek@xilinx.com \
--cc=peter@hurleysoftware.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).