Re: [PATCH] mtd: spi-nor: Support controllers with limited TX FIFO size

From: Boris Brezillon
Date: Wed Oct 03 2018 - 03:11:13 EST


On Wed, 13 Jun 2018 11:38:12 +0530
Yogesh Gaur <yogeshnarayan.gaur@xxxxxxx> wrote:

> Some SPI controllers can't write nor->page_size bytes in a single
> step because their TX FIFO is too small.
>
> Allow nor->write() to return a size that is smaller than the requested
> write size to gracefully handle this case.
>
> Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@xxxxxxx>

Queued to spi-nor/next.

Thanks,

Boris

> ---
> drivers/mtd/spi-nor/spi-nor.c | 7 -------
> 1 file changed, 7 deletions(-)
>
> diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
> index 5bfa36e..3e63543 100644
> --- a/drivers/mtd/spi-nor/spi-nor.c
> +++ b/drivers/mtd/spi-nor/spi-nor.c
> @@ -1431,13 +1431,6 @@ static int spi_nor_write(struct mtd_info *mtd, loff_t to, size_t len,
> goto write_err;
> *retlen += written;
> i += written;
> - if (written != page_remain) {
> - dev_err(nor->dev,
> - "While writing %zu bytes written %zd bytes\n",
> - page_remain, written);
> - ret = -EIO;
> - goto write_err;
> - }
> }
>
> write_err: