linux-kernel - Re: [PATCH 1/2] tty: serial: msm_serial regression fix data corruption

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Message-ID: <20160425204720.GF13149@codeaurora.org>
Date:	Mon, 25 Apr 2016 13:47:20 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Frank Rowand <frowand.list@...il.com>
Cc:	Andy Gross <andy.gross@...aro.org>,
	David Brown <david.brown@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.com>,
	"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
	linux-soc@...r.kernel.org, linux-serial@...r.kernel.org,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	ivan.ivanov@...aro.org
Subject: Re: [PATCH 1/2] tty: serial: msm_serial regression fix data
 corruption

On 04/23, Frank Rowand wrote:
> From: Frank Rowand <frank.rowand@...sony.com>
> 
> Commit 3a878c430fd6 ("tty: serial: msm: Add TX DMA support") regression.
> The calculation of tx_count was moved from the old msm_handle_tx(),
> now renamed msm_handle_tx_pio(), to the new msm_handle_tx().  The
> move left out one size test.
> 
> The regression seen on the qcom-apq8074-dragonboard is dropped
> characters and corrupted characters (values greater than 0x7f)
> when DMA is not enabled.
> 
> Signed-off-by: Frank Rowand <frank.rowand@...sony.com>
> Cc: stable@...r.kernel.org
> ---

Reviewed-by: Stephen Boyd <sboyd@...eaurora.org>

Thanks for finding this!

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