[U-Boot] [PATCH 0/1] Fix hang trying to protect flash sectors

[Mark Tomlinson]

Our hardware has part of the flash mapped in two address ranges.
The CONFIG_SYS_MONITOR_BASE is in the upper 'boot' area, whereas
the CONFIG_SYS_FLASH_BANKS_LIST has the full flash available at
a lower address.

This all works fine until the code in cfi_flash.c:flash_init(), which
uses flash_get_info() to find the flash_info_t associated with the
monitor and environment. These are not in the probed flash range, so
flash_get_info() returns NULL. This is not checked and is passed
directly to flash_protect(). Since flash_protect() was not checking
for this NULL pointer either, random memory would be clobbered
causing the device to lock up.

This patch changes flash_protect() to check for the NULL, and the
error goes unreported.

Mark Tomlinson (1):
  flash: Check info pointer in flash_protect().

 common/flash.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)


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