On Thu, 30 Mar 2017 10:37:50 +0300
Roger Quadros <rogerq@xxxxxx> wrote:
> commit c9711ec5250b ("mtd: nand: omap: Clean up device tree support")
> caused the parent device name to be changed from "omap2-nand.0"
> to "<base address>.nand" (e.g. 30000000.nand on omap3 platforms).
> This caused mtd->name to be changed as well. This breaks partition
> creation via mtdparts passed by u-boot as it uses "omap2-nand.0"
> for the mtd-id.
>
> Fix this by explicitly setting the mtd->name to "omap2-nand.<CS number>"
> if it isn't already set by nand_set_flash_node(). CS number is the
> NAND controller instance ID.
>
Applied.
Thanks,
Boris
> Fixes: c9711ec5250b ("mtd: nand: omap: Clean up device tree support")
> Cc: <stable@xxxxxxxxxxxxxxx> # 4.7+
> Reported-by: Leto Enrico <enrico.leto@xxxxxxxxxxx>
> Reported-by: Adam Ford <aford173@xxxxxxxxx>
> Suggested-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>
> Tested-by: Adam Ford <aford173@xxxxxxxxx>
> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
> ---
> drivers/mtd/nand/omap2.c | 9 +++++++++
> 1 file changed, 9 insertions(+)
>
> diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
> index 2a52101..084934a 100644
> --- a/drivers/mtd/nand/omap2.c
> +++ b/drivers/mtd/nand/omap2.c
> @@ -1856,6 +1856,15 @@ static int omap_nand_probe(struct platform_device *pdev)
> nand_chip->ecc.priv = NULL;
> nand_set_flash_node(nand_chip, dev->of_node);
>
> + if (!mtd->name) {
> + mtd->name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
> + "omap2-nand.%d", info->gpmc_cs);
> + if (!mtd->name) {
> + dev_err(&pdev->dev, "Failed to set MTD name\n");
> + return -ENOMEM;
> + }
> + }
> +
> res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> nand_chip->IO_ADDR_R = devm_ioremap_resource(&pdev->dev, res);
> if (IS_ERR(nand_chip->IO_ADDR_R))
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