Commit 630d6bd8 authored by Yogesh Gaur's avatar Yogesh Gaur Committed by Boris Brezillon
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mtd: spi-nor: Support controllers with limited TX FIFO size 



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: default avatarYogesh Gaur <yogeshnarayan.gaur@nxp.com>
Signed-off-by: default avatarBoris Brezillon <boris.brezillon@bootlin.com>
parent 900f5e0d

drivers/mtd/spi-nor/spi-nor.c

+0 −7
Original line number Diff line number Diff line
@@ -1756,13 +1756,6 @@ 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: