[PATCH v6 1/2] mtd: fsl-quadspi: Distinguish the mtd device names

Fabio Estevam festevam at gmail.com
Thu Jan 25 02:20:59 PST 2018


Hi Boris,

On Thu, Jan 18, 2018 at 12:28 PM, Fabio Estevam <fabio.estevam at nxp.com> wrote:
> Currently on a imx6sx-sdb board, which has two SPI NOR chips connected
> to QSPI2 the following output from /proc/mtd is seen:
>
> # cat /proc/mtd
> dev:    size   erasesize  name
> mtd0: 01000000 00010000 "21e4000.qspi"
> mtd1: 01000000 00010000 "21e4000.qspi"
>
> Attempts to partition them on the kernel command line result in both
> chips with identical (and identically named) partitions, which is
> an inconvenient behavior.
>
> Assign a different mtd->name for each mtd device to avoid this problem.
>
> After this change the output from /proc/mtd becomes:
>
> # cat /proc/mtd
> dev:    size   erasesize  name
> mtd0: 01000000 00010000 "21e4000.qspi-0"
> mtd1: 01000000 00010000 "21e4000.qspi-1"
>
> In order to keep mtdparts compatibility keep the mtd->name
> unchanged when a single SPI NOR is present.
>
> Reported-by: David Wolfe <david.wolfe at nxp.com>
> Signed-off-by: Fabio Estevam <fabio.estevam at nxp.com>
> Reviewed-by: Boris Brezillon <boris.brezillon at free-electrons.com>
> ---
> Changes since v5:
> - Preserve the label value, if any. (Boris)

Do you plan to apply this one for 4.17?

Thanks



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