On Tue, Feb 18, 2014 at 02:55:52PM +0000, Lee Jones wrote:
> diff --git a/drivers/mtd/devices/st_spi_fsm.c
> b/drivers/mtd/devices/st_spi_fsm.c
> index fe538bb..e4815fe 100644
> --- a/drivers/mtd/devices/st_spi_fsm.c
> +++ b/drivers/mtd/devices/st_spi_fsm.c
> @@ -942,6 +945,100 @@ static int stfsm_n25q_config(struct stfsm *fsm)
[...]
> +static int stfsm_mtd_read(struct mtd_info *mtd, loff_t from, size_t len,
> + size_t *retlen, u_char *buf)
> +{
> + struct stfsm *fsm = dev_get_drvdata(mtd->dev.parent);
> + uint32_t bytes;
> +
> + dev_dbg(fsm->dev, "%s from 0x%08x, len %zd\n",
> + __func__, (u32)from, len);
> +
> + mutex_lock(&fsm->lock);
> +
> + while (len > 0) {
> + bytes = min_t(size_t, len, FLASH_PAGESIZE);
> +
> + stfsm_read(fsm, buf, bytes, from);
> +
> + buf += bytes;
> + from += bytes;
> + len -= bytes;
> +
> + if (retlen)
Same as with your _write implementation; you can assume that retlen is
always non-NULL.
> + *retlen += bytes;
> + }
> +
> + mutex_unlock(&fsm->lock);
> +
> + return 0;
> +}
> +
> static void stfsm_read_jedec(struct stfsm *fsm, uint8_t *const jedec)
> {
> const struct stfsm_seq *seq = &stfsm_seq_read_jedec;
Brian
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