[PATCH] mtd: spi-nor: core: Check read CR support

[Miquel Raynal]

Hi Jakub,

> diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
> index ac4b960101cc..79deee3a50d3 100644
> --- a/drivers/mtd/spi-nor/core.c
> +++ b/drivers/mtd/spi-nor/core.c
> @@ -2608,6 +2608,10 @@ static int spi_nor_setup(struct spi_nor *nor,
>  		}
>  	}
>  
> +	/* Some SPI controllers might not support CR read opcode. */
> +	if (spi_nor_read_cr(nor, nor->bouncebuf) == -EOPNOTSUPP)

There is a spi_nor_spimem_check_op() helper which might be better suited
for this purpose?

Thanks,
Miquèl