diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index 06e1bf01fd92..2b26a875a855 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -2981,6 +2981,37 @@ static void spi_nor_resume(struct mtd_info *mtd) dev_err(dev, "resume() failed\n"); } +static int spi_nor_get_device(struct mtd_info *mtd) +{ + struct mtd_info *master = mtd_get_master(mtd); + struct spi_nor *nor = mtd_to_spi_nor(master); + struct device *dev; + + if (nor->spimem) + dev = nor->spimem->spi->controller->dev.parent; + else + dev = nor->dev; + + if (!try_module_get(dev->driver->owner)) + return -ENODEV; + + return 0; +} + +static void spi_nor_put_device(struct mtd_info *mtd) +{ + struct mtd_info *master = mtd_get_master(mtd); + struct spi_nor *nor = mtd_to_spi_nor(master); + struct device *dev; + + if (nor->spimem) + dev = nor->spimem->spi->controller->dev.parent; + else + dev = nor->dev; + + module_put(dev->driver->owner); +} + void spi_nor_restore(struct spi_nor *nor) { /* restore the addressing mode */ @@ -3157,6 +3188,8 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, mtd->_erase = spi_nor_erase; mtd->_read = spi_nor_read; mtd->_resume = spi_nor_resume; + mtd->_get_device = spi_nor_get_device; + mtd->_put_device = spi_nor_put_device; if (nor->params->locking_ops) { mtd->_lock = spi_nor_lock;