linux-kernel - Re: [PATCH v2 2/2] mtd: nand: raw: brcmnand: When oops in progress use pio and interrupt polling

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Date:   Thu, 16 May 2019 12:14:49 -0400
From:   Kamal Dasu <kamal.dasu@...adcom.com>
To:     Kamal Dasu <kdasu.kdev@...il.com>
Cc:     MTD Maling List <linux-mtd@...ts.infradead.org>,
        bcm-kernel-feedback-list@...adcom.com,
        open list <linux-kernel@...r.kernel.org>,
        Brian Norris <computersforpeace@...il.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        David Woodhouse <dwmw2@...radead.org>,
        Marek Vasut <marek.vasut@...il.com>,
        Vignesh Raghavendra <vigneshr@...com>
Subject: Re: [PATCH v2 2/2] mtd: nand: raw: brcmnand: When oops in progress
 use pio and interrupt polling

Please ignore v2 patch 1/2 and 2/2. The commit ordering is not right.
v3 patch on the way



Kamal

On Thu, May 16, 2019 at 12:01 PM Kamal Dasu <kdasu.kdev@...il.com> wrote:
>
> If mtd_oops is in progress switch to polling for nand command completion
> interrupts and use PIO mode wihtout DMA so that the mtd_oops buffer can
> be completely written in the assinged nand partition.
>
> Signed-off-by: Kamal Dasu <kdasu.kdev@...il.com>
> ---
>  drivers/mtd/nand/raw/brcmnand/brcmnand.c | 1 -
>  1 file changed, 1 deletion(-)
>
> diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
> index a30a7f0..dca8eb8 100644
> --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c
> +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c
> @@ -835,7 +835,6 @@ static inline void disable_ctrl_irqs(struct brcmnand_controller *ctrl)
>         }
>
>         disable_irq(ctrl->irq);
> -
>         ctrl->pio_poll_mode = true;
>  }
>
> --
> 1.9.0.138.g2de3478
>