[U-Boot] [PATCH] cmd_nand: fix crashing bug in nand read/write

[Scott Wood]

On 06/07/2012 12:19 PM, Steve Sakoman wrote:
> Commit 418396e212b59bf907dbccad997ff50f7eb61b16 introduced a
> bug that causes nand read and nand write to crash in strcmp
> due to a null pointer.
> 
> Root cause is that strchr(cmd, '.') returns a null pointer when
> the input string does not contain a '.'
> 
> The strcmp function does not check for null pointers, resulting
> in a crash.
> 
> Signed-off-by: Steve Sakoman <steve at sakoman.com>

Applied to u-boot-nand-flash, thanks!

This was missed in testing because U-Boot on PowerPC unfortunately has a
valid mapping at NULL.

-Scott