diff options
Diffstat (limited to 'drivers/mtd/spi-nor/swp.c')
| -rw-r--r-- | drivers/mtd/spi-nor/swp.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/mtd/spi-nor/swp.c b/drivers/mtd/spi-nor/swp.c index 0ba716e84377..5ab9d5324860 100644 --- a/drivers/mtd/spi-nor/swp.c +++ b/drivers/mtd/spi-nor/swp.c @@ -214,8 +214,13 @@ static int spi_nor_sr_lock(struct spi_nor *nor, loff_t ofs, uint64_t len) status_new = (status_old & ~mask & ~tb_mask) | val; - /* Disallow further writes if WP pin is asserted */ - status_new |= SR_SRWD; + /* + * Disallow further writes if WP# pin is neither left floating nor + * wrongly tied to GND (that includes internal pull-downs). + * WP# pin hard strapped to GND can be a valid use case. + */ + if (!(nor->flags & SNOR_F_NO_WP)) + status_new |= SR_SRWD; if (!use_top) status_new |= tb_mask; |