[PATCH] drm/msm: Use the correct dma_sync calls harder

[Rob Clark]

On Tue, Oct 8, 2019 at 9:11 AM Fabio Estevam <festevam at gmail.com> wrote:
>
> Hi Rob,
>
> On Wed, Sep 4, 2019 at 2:19 PM Rob Clark <robdclark at gmail.com> wrote:
> >
> > From: Rob Clark <robdclark at chromium.org>
> >
> > Looks like the dma_sync calls don't do what we want on armv7 either.
> > Fixes:
> >
> >   Unable to handle kernel paging request at virtual address 50001000
> >   pgd = (ptrval)
> >   [50001000] *pgd=00000000
> >   Internal error: Oops: 805 [#1] SMP ARM
> >   Modules linked in:
> >   CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.3.0-rc6-00271-g9f159ae07f07 #4
> >   Hardware name: Freescale i.MX53 (Device Tree Support)
> >   PC is at v7_dma_clean_range+0x20/0x38
> >   LR is at __dma_page_cpu_to_dev+0x28/0x90
> >   pc : [<c011c76c>]    lr : [<c01181c4>]    psr: 20000013
> >   sp : d80b5a88  ip : de96c000  fp : d840ce6c
> >   r10: 00000000  r9 : 00000001  r8 : d843e010
> >   r7 : 00000000  r6 : 00008000  r5 : ddb6c000  r4 : 00000000
> >   r3 : 0000003f  r2 : 00000040  r1 : 50008000  r0 : 50001000
> >   Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
> >   Control: 10c5387d  Table: 70004019  DAC: 00000051
> >   Process swapper/0 (pid: 1, stack limit = 0x(ptrval))
> >
> > Signed-off-by: Rob Clark <robdclark at chromium.org>
> > Fixes: 3de433c5b38a ("drm/msm: Use the correct dma_sync calls in msm_gem")
> > Tested-by: Fabio Estevam <festevam at gmail.com>
>
> I see this one got applied in linux-next already.
> Could it be sent to 5.4-rc, please?

afaict this should be at least in v5.4-rc2.. am I missing something?

BR,
-R

>
> mx53 boards cannot boot in mainline because of this.
>
> Thanks