mirror of
https://github.com/AsahiLinux/u-boot
synced 2025-02-18 06:58:54 +00:00
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> |
||
|---|---|---|
| .. | ||
| nand | ||
| onenand | ||
| spi | ||
| ubi | ||
| ubispl | ||
| altera_qspi.c | ||
| cfi_flash.c | ||
| cfi_mtd.c | ||
| jedec_flash.c | ||
| Kconfig | ||
| Makefile | ||
| mtd-uclass.c | ||
| mtd_uboot.c | ||
| mtdconcat.c | ||
| mtdcore.c | ||
| mtdcore.h | ||
| mtdpart.c | ||
| mw_eeprom.c | ||
| pic32_flash.c | ||
| renesas_rpc_hf.c | ||
| st_smi.c | ||
| stm32_flash.c | ||
| stm32_flash.h | ||