Re: [PATCH v5 3/5] mtd: devices: m25p80: add support for mmap read request

[Mark Brown]

On Fri, Dec 11, 2015 at 09:39:58AM +0530, Vignesh R wrote:

> +	if (spi_flash_read_supported(spi)) {
> +		struct spi_flash_read_message msg;
> +		int ret;
> +
> +		msg.buf = buf;
> +		msg.from = from;
> +		msg.len = len;
> +		msg.read_opcode = nor->read_opcode;
> +		msg.addr_width = nor->addr_width;
> +		msg.dummy_bytes = dummy;
> +		/* TODO: Support other combinations */
> +		msg.opcode_nbits = SPI_NBITS_SINGLE;
> +		msg.addr_nbits = SPI_NBITS_SINGLE;
> +		msg.data_nbits = m25p80_rx_nbits(nor);
> +
> +		ret = spi_flash_read(spi, &msg);
> +		*retlen = msg.retlen;
> +		return ret;

Looking at this I can't help but think that spi_flash_read() ought to
have the stub in rather than the caller.  But given that we're pretty
much only ever expecting one user I'm not 100% sure it actually matters.
Anyway, I applied the first two patches.

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