From: Sasha Levin <sashal@kernel.org>
To: gregkh@linuxfoundation.org
Cc: skakit@codeaurora.org, stable@vger.kernel.org
Subject: Re: FAILED: patch "[PATCH] tty: serial: qcom_geni_serial: Fix RX cancel command failure" failed to apply to 4.19-stable tree
Date: Wed, 26 Feb 2020 19:10:37 -0500 [thread overview]
Message-ID: <20200227001037.GD22178@sasha-vm> (raw)
In-Reply-To: <1582713437188162@kroah.com>
On Wed, Feb 26, 2020 at 11:37:17AM +0100, gregkh@linuxfoundation.org wrote:
>
>The patch below does not apply to the 4.19-stable tree.
>If someone wants it applied there, or to any other stable or longterm
>tree, then please email the backport, including the original git commit
>id to <stable@vger.kernel.org>.
>
>thanks,
>
>greg k-h
>
>------------------ original commit in Linus's tree ------------------
>
>From 679aac5ead2f18d223554a52b543e1195e181811 Mon Sep 17 00:00:00 2001
>From: satya priya <skakit@codeaurora.org>
>Date: Tue, 11 Feb 2020 15:43:02 +0530
>Subject: [PATCH] tty: serial: qcom_geni_serial: Fix RX cancel command failure
>
>RX cancel command fails when BT is switched on and off multiple times.
>
>To handle this, poll for the cancel bit in SE_GENI_S_IRQ_STATUS register
>instead of SE_GENI_S_CMD_CTRL_REG.
>
>As per the HPG update, handle the RX last bit after cancel command
>and flush out the RX FIFO buffer.
>
>Signed-off-by: satya priya <skakit@codeaurora.org>
>Cc: stable <stable@vger.kernel.org>
>Link: https://lore.kernel.org/r/1581415982-8793-1-git-send-email-skakit@codeaurora.org
>Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
For 4.19, I took this mix of cleanups and fixes:
bdc05a8a3f82 ("tty: serial: qcom_geni_serial: Remove xfer_mode variable")
9e06d55f7b85 ("tty: serial: qcom_geni_serial: Remove use of *_relaxed() and mb()")
64a428077758 ("tty: serial: qcom_geni_serial: Remove interrupt storm")
a85fb9ce1fab ("tty: serial: qcom_geni_serial: Remove set_rfr_wm() and related variables")
663abb1a7a7f ("tty: serial: qcom_geni_serial: Fix UART hang")
This patch isn't needed on older kernels.
--
Thanks,
Sasha
prev parent reply other threads:[~2020-02-27 0:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-26 10:37 FAILED: patch "[PATCH] tty: serial: qcom_geni_serial: Fix RX cancel command failure" failed to apply to 4.19-stable tree gregkh
2020-02-27 0:10 ` Sasha Levin [this message]
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