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Thu, 05 Mar 2026 15:12:43 -0800 (PST) X-Received: by 2002:a05:7022:122:b0:11b:c1ab:bdd4 with SMTP id a92af1059eb24-128c2eaea56mr58456c88.38.1772752363245; Thu, 05 Mar 2026 15:12:43 -0800 (PST) Received: from [10.67.48.245] ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-128bac04455sm3307094c88.1.2026.03.05.15.12.41 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 05 Mar 2026 15:12:42 -0800 (PST) Message-ID: <75359b55-763f-4a90-bb09-141d42315eba@broadcom.com> Date: Thu, 5 Mar 2026 15:12:40 -0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mtd: rawnand: brcmnand: skip DMA during panic write To: Kamal Dasu , computersforpeace@gmail.com, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com Cc: florian.fainelli@broadcom.com, william.zhang@broadcom.com, bcm-kernel-feedback-list@broadcom.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org References: <20260305202157.3571334-1-kamal.dasu@broadcom.com> Content-Language: en-US, fr-FR From: Florian Fainelli Autocrypt: addr=florian.fainelli@broadcom.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-DetectorID-Processed: b00c1d49-9d2e-4205-b15f-d015386d3d5e On 3/5/26 12:21, Kamal Dasu wrote: > When oops_panic_write is set, the driver disables interrupts and > switches to PIO polling mode but still falls through into the DMA > path. DMA cannot be used reliably in panic context, so make the > DMA path an else branch to ensure only PIO is used during panic > writes. > > Fixes: c1ac2dc34b51 ("mtd: rawnand: brcmnand: When oops in progress use pio and interrupt polling") > Signed-off-by: Kamal Dasu Reviewed-by: Florian Fainelli -- Florian