diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2015-11-13 02:46:26 -0800 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-11-13 09:47:22 -0500 |
| commit | 439fcb9b4f717f5a583014acb3e75b789564867c (patch) | |
| tree | 896aa273c728253b8a6061c7d6710a7bc4bba13a /include | |
| parent | 9ac4fc82071ce346e3885118242ff45d22f69b82 (diff) | |
sf: Fix NULL pointer exception for flashes without lock methods
commit c3c016c "sf: Add SPI NOR protection mechanism" introduced
flash_lock()/flash_unlock()/flash_is_locked() methods for SPI flash,
but not every flash driver supplies these. We should test these
methods against NULL before actually calling them.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Reviewed-by: Jagan Teki <jteki@openedev.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/spi_flash.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/spi_flash.h b/include/spi_flash.h index 0ae0062d12..f25b3e7819 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -237,7 +237,7 @@ static inline int spi_flash_erase(struct spi_flash *flash, u32 offset, static inline int spi_flash_protect(struct spi_flash *flash, u32 ofs, u32 len, bool prot) { - if (!flash->flash_lock) + if (!flash->flash_lock || !flash->flash_unlock) return -EOPNOTSUPP; if (prot) |