[U-Boot] [PATCH] cfi_flash: fix bug with flash banks with different sector numbers

[Detlev Zundel <dzu@denx.de>]

Hello Stefan,

> The function find_sector() does not take into account if the flash bank
> has changed since the last call. This could lead to illegal accesses inside
> and beyond the flash_info_t info strcture. For example if the current
> flash bank has less sectors than the last used flash bank.
>
> This patch adds two cheks. One that insures, that the current sector does
> not exceed the allowed maximum (which is always a good idea). And one that
> checks if the current access is to the same flash bank as the last access.
> If not, the search loop will start with sector 0.
>
> Signed-off-by: Martin Krause <martin.krause@tqs.de>

Can you please comment on Martins fix?  Thanks!
  Detlev

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