Re: [PATCH v7 1/5] mips: bmips: BCM6358: make sure CBR is correctly set

[Christian Marangi]

On Tue, Jun 11, 2024 at 02:49:07PM +0200, Thomas Bogendoerfer wrote:
> On Tue, Jun 11, 2024 at 01:35:33PM +0200, Christian Marangi wrote:
> > It was discovered that some device have CBR address set to 0 causing
> > kernel panic when arch_sync_dma_for_cpu_all is called.
> > 
> > This was notice in situation where the system is booted from TP1 and
> > BMIPS_GET_CBR() returns 0 instead of a valid address and
> > !!(read_c0_brcm_cmt_local() & (1 << 31)); not failing.
> > 
> > The current check whether RAC flush should be disabled or not are not
> > enough hence lets check if CBR is a valid address or not.
> > 
> > Fixes: ab327f8acdf8 ("mips: bmips: BCM6358: disable RAC flush for TP1")
> 
> should I apply it to mips-fixes ? If not could you just ammend
> it with the following patch, where this is changed again ?
>

Ideally this should be backported to stable kernel since it does cause
kernel panic. This is why it's split and it's the first patch of the
series.

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	Ansuel