[PATCH 0/2] serial: sh-sci: Fix .flush_buffer() issues

From: Geert Uytterhoeven <geert+renesas@glider.be>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jslaby@suse.com>,
	Eugeniu Rosca <erosca@de.adit-jv.com>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
	Vinod Koul <vkoul@kernel.org>,
	Dan Williams <dan.j.williams@intel.com>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	linux-serial@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
	dmaengine@vger.kernel.org,
	Geert Uytterhoeven <geert+renesas@glider.be>
Subject: [PATCH 0/2] serial: sh-sci: Fix .flush_buffer() issues
Date: Mon, 24 Jun 2019 14:35:38 +0200	[thread overview]
Message-ID: <20190624123540.20629-1-geert+renesas@glider.be> (raw)

	Hi Greg, Jiri,

This patch series attempts to fix the issues Eugeniu Rosca reported
seeing, where .flush_buffer() interfered with transmit DMA operation[*].

There's a third patch "dmaengine: rcar-dmac: Reject zero-length slave
DMA requests", which is related to the issue, but further independent,
hence submitted separately.

Eugeniu: does this fix the issues you were seeing?

Thanks for your comments!

[*] '[PATCH 2/6] Revert "arm64: dts: renesas: r8a7796: Enable DMA for SCIF2"'
(https://lore.kernel.org/lkml/20190504004258.23574-3-erosca@de.adit-jv.com/).

Geert Uytterhoeven (2):
  serial: sh-sci: Fix TX DMA buffer flushing and workqueue races
  serial: sh-sci: Terminate TX DMA during buffer flushing

 drivers/tty/serial/sh-sci.c | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

-- 
2.17.1

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds