> > > > >
> > > > I am sorry to make you trouble. According to your words, this fix
> > > should not
> > > > go 3.x stable tree, as it relates some code which checked in after
> > > 3.0.27.
> > >
> > > So, should I drop it from the 3.0-stable tree then?
> > >
> > I am not sure if only 3.0-stable needs to drop.
> > This commit (d39514c) needs to added after below commit:
> >
> > commit 314b02f503c2c219fde0fcf6f086fda415f8a847
> > Author: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
> > Date: Fri Jul 8 00:17:27 2011 -0500
> >
> > powerpc: implement arch_setup_pdev_archdata
> >
> > We have a long standing issues with platform devices not have a
> valid
> > dma_mask pointer. This hasn't been an issue to date as no platform
> > device has tried to set its dma_mask value to a non-default value.
> >
> > Acked-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
> > Signed-off-by: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx>
>
>
> I still do not understand, sorry.
>
> Please tell me exactly what patches need to be applied to the 3.0-stable
> tree to fix this, OR, what patch I should revert.
>
Sorry to make your trouble.
Please revert below patch for 3.0 stable tree
commit e90fc3cb087ce5c5f81e814358222cd6d197b5db
Author: Peter Chen <peter.chen@xxxxxxxxxxxxx>
Date: Thu Feb 16 09:41:52 2012 +0800
usb: Fix build error due to dma_mask is not at pdev_archdata at ARM
When build i.mx platform with imx_v6_v7_defconfig, and after adding
USB Gadget support, it has below build error:
CC drivers/usb/host/fsl-mph-dr-of.o
drivers/usb/host/fsl-mph-dr-of.c: In function 'fsl_usb2_device_register':
drivers/usb/host/fsl-mph-dr-of.c:97: error: 'struct pdev_archdata'
has no member named 'dma_mask'
It has discussed at: http://www.spinics.net/lists/linux-usb/msg57302.html
For PowerPC, there is dma_mask at struct pdev_archdata, but there is
no dma_mask at struct pdev_archdata for ARM. The pdev_archdata is
related to specific platform, it should NOT be accessed by
cross platform drivers, like USB.
The code for pdev_archdata should be useless, as for PowerPC,
it has already gotten the value for pdev->dev.dma_mask at function
arch_setup_pdev_archdata of arch/powerpc/kernel/setup-common.c.
Tested-by: Ramneek Mehresh <ramneek.mehresh@xxxxxxxxxxxxx>
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> thanks,
>
> greg k-h
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