From: Stephen Boyd <sboyd@codeaurora.org>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org
Subject: Re: [RFC PATCH 2/2] tty:msm_serial: Do not reset IP if we use bootconsole
Date: Tue, 17 Jun 2014 14:09:00 -0700 [thread overview]
Message-ID: <53A0AE6C.7040706@codeaurora.org> (raw)
In-Reply-To: <1402410732-13021-1-git-send-email-srinivas.kandagatla@linaro.org>
On 06/10/14 07:32, Srinivas Kandagatla wrote:
> The use case is when we boot the platform with bootconsole enabled. What
> I noticed is that the console gets locked sometimes up before the bootconsole
> is disabled.
>
> As part of console setup in serial driver it resets that hardware which
> is a race condition to bootconsole using the same hardware. This
> patch adds a check to see if there is bootconsole before reseting the hardware.
>
> Am sure there are better ways to solve this, so marking this patch as
> RFC. Any suggestions are welcome.
>
>
Isn't there some way to check and wait for the hardware to be unused
before we reset it?
I recall being able to overcome this "race condition" by removing the
printks in the serial driver setup. Does that work for you?
--
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
hosted by The Linux Foundation
next prev parent reply other threads:[~2014-06-17 21:09 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-10 14:31 [RFC PATCH 0/2] MSM/QCOM: Fix few race conditions when DEBUG_LL is enabled Srinivas Kandagatla
2014-06-10 14:31 ` [RFC PATCH 1/2] soc: qcom: do not disable the iface clock in probe Srinivas Kandagatla
2014-06-10 15:20 ` Kumar Gala
2014-06-10 17:39 ` Stephen Boyd
2014-06-10 17:46 ` Andy Gross
2014-06-10 17:47 ` Srinivas Kandagatla
2014-06-10 17:57 ` Andy Gross
2014-07-17 20:18 ` Srinivas Kandagatla
2014-08-12 4:25 ` Srinivas Kandagatla
2014-06-10 14:32 ` [RFC PATCH 2/2] tty:msm_serial: Do not reset IP if we use bootconsole Srinivas Kandagatla
2014-06-10 14:37 ` Srinivas Kandagatla
2014-06-17 21:09 ` Stephen Boyd [this message]
2014-06-17 22:04 ` Srinivas Kandagatla
2014-07-10 13:38 ` Srinivas Kandagatla
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