linux-kernel - Re: [PATCH 4.9 000/121] 4.9.238-rc1 review

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Date:   Tue, 29 Sep 2020 13:48:35 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org,
        akpm@...ux-foundation.org, shuah@...nel.org, patches@...nelci.org,
        ben.hutchings@...ethink.co.uk, lkft-triage@...ts.linaro.org,
        pavel@...x.de, stable@...r.kernel.org
Subject: Re: [PATCH 4.9 000/121] 4.9.238-rc1 review

On Tue, Sep 29, 2020 at 12:59:04PM +0200, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.9.238 release.
> There are 121 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Thu, 01 Oct 2020 10:59:03 +0000.
> Anything received after that time might be too late.
> 

Build results:
	total: 171 pass: 171 fail: 0
Qemu test results:
	total: 386 pass: 377 fail: 9
Failed tests:
	arm:xilinx-zynq-a9:multi_v7_defconfig:mem128:zynq-zc702:initrd
	arm:xilinx-zynq-a9:multi_v7_defconfig:sd:mem128:zynq-zc702:rootfs
	arm:xilinx-zynq-a9:multi_v7_defconfig:sd:mem128:zynq-zc706:rootfs
	arm64:xlnx-zcu102:defconfig:smp:mem2G:initrd:xilinx/zynqmp-ep108
	arm64:xlnx-zcu102:defconfig:smp:mem2G:sata:rootfs:xilinx/zynqmp-ep108
	arm64:xlnx-zcu102:defconfig:nosmp:mem2G:initrd:xilinx/zynqmp-ep108
	arm64be:xlnx-zcu102:defconfig:smp:mem2G:initrd:xilinx/zynqmp-ep108
	arm64be:xlnx-zcu102:defconfig:smp:mem2G:sata:rootfs:xilinx/zynqmp-ep108
	arm64be:xlnx-zcu102:defconfig:nosmp:mem2G:initrd:xilinx/zynqmp-ep108

The Xilinx problems appears to be due to the following two commits.

1156dd2483fd serial: uartps: Wait for tx_empty in console setup
9a13572bf02b serial: uartps: Add a timeout to the tx empty wait

I didn't try all tests, but reverting those two patches fixes the problem
at least for arm64:xlnx-zcu102.

I don't see this problem in any other stable releases.

Guenter