| From: Felix Fietkau <nbd@nbd.name> |
| Date: Thu, 22 Feb 2018 11:11:57 +0100 |
| Subject: [PATCH] mtd: spi-nor: allow NOR driver to write fewer bytes than |
| requested |
| |
| The write size can be constrained by the maximum message/transfer size |
| of the SPI controller. Only check for ret = 0 to avoid an infinite loop. |
| |
| Signed-off-by: Felix Fietkau <nbd@nbd.name> |
| --- |
| |
| --- a/drivers/mtd/spi-nor/spi-nor.c |
| +++ b/drivers/mtd/spi-nor/spi-nor.c |
| @@ -2708,7 +2708,7 @@ static int spi_nor_write(struct mtd_info |
| |
| write_enable(nor); |
| ret = spi_nor_write_data(nor, addr, page_remain, buf + i); |
| - if (ret < 0) |
| + if (ret <= 0) |
| goto write_err; |
| written = ret; |
| |