From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jslaby@suse.com>
Cc: Muhammad Hamza Farooq <mfarooq@visteon.com>,
Magnus Damm <magnus.damm@gmail.com>,
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
Nobuhiro Iwamatsu <iwamatsu@nigauri.org>,
Yoshihiro Kaneko <ykaneko0929@gmail.com>,
Kazuya Mizuguchi <kazuya.mizuguchi.ks@renesas.com>,
Koji Matsuoka <koji.matsuoka.xm@renesas.com>,
Wolfram Sang <wsa@the-dreams.de>,
Guennadi Liakhovetski <g.liakhovetski@gmx.de>,
linux-serial@vger.kernel.org, linux-sh@vger.kernel.org,
Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH v4 04/10] serial: sh-sci: Stop calling sci_start_rx() from sci_request_dma()
Date: Fri, 18 Sep 2015 13:08:27 +0200 [thread overview]
Message-ID: <1442574513-20648-5-git-send-email-geert+renesas@glider.be> (raw)
In-Reply-To: <1442574513-20648-1-git-send-email-geert+renesas@glider.be>
There's no need to call sci_start_rx() from sci_request_dma() when DMA
setup fails, as sci_startup() will call sci_start_rx() anyway.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
v4:
- New.
---
drivers/tty/serial/sh-sci.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 02aaf4d213d9c280..ac9ce8f1ff799a48 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -1386,7 +1386,6 @@ static void sci_request_dma(struct uart_port *port)
"Failed to allocate Rx dma buffer, using PIO\n");
dma_release_channel(chan);
s->chan_rx = NULL;
- sci_start_rx(port);
return;
}
--
1.9.1
next prev parent reply other threads:[~2015-09-18 11:08 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-18 11:08 [PATCH v4 00/10] serial: sh-sci: Add DT DMA support Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 01/10] serial: sh-sci: Shuffle functions around Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 02/10] serial: sh-sci: Get rid of the workqueue to handle receive DMA requests Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 03/10] serial: sh-sci: Submit RX DMA from RX interrupt on (H)SCIF Geert Uytterhoeven
2015-09-18 11:08 ` Geert Uytterhoeven [this message]
2015-09-18 11:08 ` [PATCH v4 05/10] serial: sh-sci: Remove timer on shutdown of port Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 06/10] serial: sh-sci: Redirect port interrupts to CPU _only_ when DMA stops Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 07/10] serial: sh-sci: Call dma_async_issue_pending when transaction completes Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 08/10] serial: sh-sci: Do not terminate DMA engine when race condition occurs Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 09/10] serial: sh-sci: Pause DMA engine and get DMA status again Geert Uytterhoeven
2015-09-18 11:08 ` [PATCH v4 10/10] serial: sh-sci: Add DT support to DMA setup Geert Uytterhoeven
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=1442574513-20648-5-git-send-email-geert+renesas@glider.be \
--to=geert+renesas@glider.be \
--cc=g.liakhovetski@gmx.de \
--cc=gregkh@linuxfoundation.org \
--cc=iwamatsu@nigauri.org \
--cc=jslaby@suse.com \
--cc=kazuya.mizuguchi.ks@renesas.com \
--cc=koji.matsuoka.xm@renesas.com \
--cc=laurent.pinchart+renesas@ideasonboard.com \
--cc=linux-serial@vger.kernel.org \
--cc=linux-sh@vger.kernel.org \
--cc=magnus.damm@gmail.com \
--cc=mfarooq@visteon.com \
--cc=wsa@the-dreams.de \
--cc=ykaneko0929@gmail.com \
--cc=yoshihiro.shimoda.uh@renesas.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).