linux-kernel - Re: [PATCH 4.4 038/134] ARM: DRA7: hwmod_data: Prevent wait_target_disable error for usb_otg

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Date:   Tue, 20 Mar 2018 08:42:41 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Tero Kristo <t-kristo@...com>, Roger Quadros <rogerq@...com>,
        Tony Lindgren <tony@...mide.com>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: Re: [PATCH 4.4 038/134] ARM: DRA7: hwmod_data: Prevent
 wait_target_disable error for usb_otg_ss

On Tue, Mar 20, 2018 at 07:52:51AM +0800, Dan Rue wrote:
> On Mon, Mar 19, 2018 at 07:05:21PM +0100, Greg Kroah-Hartman wrote:
> > 4.4-stable review patch.  If anyone has any objections, please let me know.
> > 
> > ------------------
> > 
> > From: Roger Quadros <rogerq@...com>
> > 
> > 
> > [ Upstream commit e2d54fe76997301b49311bde7ba8ef52b47896f9 ]
> > 
> > It seems that if L3_INIT clkdomain is kept in HW_AUTO while usb_otg_ss
> > is in use then there are random chances that the usb_otg_ss module
> > will fail to completely idle. i.e. IDLEST = 0x2 instead of 0x3.
> > 
> > Preventing L3_INIT from HW_AUTO while usb_otg_ss module is in use
> > fixes this issue.
> > 
> > We don't know yet if usb_otg_ss instances 3 and 4 are affected by this
> > issue or not so don't add this flag for those instances.
> > 
> > Cc: Tero Kristo <t-kristo@...com>
> > Signed-off-by: Roger Quadros <rogerq@...com>
> > Signed-off-by: Tony Lindgren <tony@...mide.com>
> > Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
> > Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> 
> This fails to build for me on arm32 with default config.
> 
> #
> # make -j10 -k -s ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- O=build-arm multi_v7_defconfig
> #
> #
> # make -j10 -k -s ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- O=build-arm
> #
> ../arch/arm/mach-omap2/omap_hwmod_7xx_data.c:2243:12: error: 'HWMOD_CLKDM_NOAUTO' undeclared here (not in a function)
>   .flags  = HWMOD_CLKDM_NOAUTO,
>             ^
> ../scripts/Makefile.build:269: recipe for target 'arch/arm/mach-omap2/omap_hwmod_7xx_data.o' failed
> make[2]: *** [arch/arm/mach-omap2/omap_hwmod_7xx_data.o] Error 1
> make[2]: Target '__build' not remade because of errors.
> /home/buildslave/workspace/kernel-single-defconfig-builder/defconfig/multi_v7_defconfig/label/builder/Makefile:969: recipe for target 'arch/arm/mach-omap2' failed
> make[1]: *** [arch/arm/mach-omap2] Error 2
> make[1]: Target '_all' not remade because of errors.
> Makefile:152: recipe for target 'sub-make' failed
> make: *** [sub-make] Error 2
> make: Target '_all' not remade because of errors.

I've dropped the patch that caused this problem now, will push out a
-rc2 in a few minutes, thanks.

greg k-h