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

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Message-ID: <ZmhbaZQbLf6Q3yoz@alpha.franken.de>
Date: Tue, 11 Jun 2024 16:12:57 +0200
From: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: Hauke Mehrtens <hauke@...ke-m.de>,
	Rafał Miłecki <zajec5@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Álvaro Fernández Rojas <noltari@...il.com>,
	linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 1/5] mips: bmips: BCM6358: make sure CBR is correctly
 set

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")
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
> Acked-by: Florian Fainelli <florian.fainelli@...adcom.com>
> ---
>  arch/mips/bmips/setup.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

applied to mips-fixes.

Thomas.

-- 
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