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08898e8b22
SPI flash based MTD devs can be registered/unregistered at any time through the sf probe command or the spi_flash_free() function. This commit does not try to fix the root cause as it would probably require rewriting most of the code and have an mtd_info object instance per spi_flash object (not to mention that the the spi-flash layer is likely to be replaced by a spi-nor layer ported from Linux). Instead, we try to be as safe as can be by checking the code returned by del_mtd_device() and complain loudly when there's nothing we can do about the deregistration failure. When that happens we also reset sf_mtd_info.priv to NULL, and check for NULL pointer in the mtd hooks so that -ENODEV is returned instead of hitting a NULL pointer dereference exception when the MTD instance is later accessed by a user. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> Tested-by: Heiko Schocher <hs@denx.de> |
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| .. | ||
| fsl_espi_spl.c | ||
| Kconfig | ||
| Makefile | ||
| sandbox.c | ||
| sf_dataflash.c | ||
| sf_internal.h | ||
| sf_mtd.c | ||
| sf_probe.c | ||
| sf-uclass.c | ||
| sf.c | ||
| spi_flash_ids.c | ||
| spi_flash.c | ||