[LEDE-DEV] [PATCH] ar71xx: fix invalid pointer dereference in c60_nand_scan_fixup()

[Gabor Juhos]

Hi Christian,

2017.12.14. 17:07 keltezéssel, Christian Lamparter írta:
> On Wednesday, December 13, 2017 8:31:50 PM CET Gabor Juhos wrote:
> 
>> Since Linux 4.6, mtd->priv no longer points to the NAND specific
> 
>> structure. Under 4.9 it contains NULL, thus using it to access
> 
>> the fields of the nand_chip structure causes an invalid pointer
> 
>> dereference.
> 
>>
> 
>> Update the code to use the mtd_to_nand() helper under 4.9 to obtain
> 
>> the address of the chip specific data.
> 
>>
> 
>> Compile tested only.
> 
>>
> 
>> Fixes: 7bbf4117c6fe ("ar71xx: Add kernel 4.9 support")
> 
>> Signed-off-by: Gabor Juhos <juhosg at freemail.hu>
> 
> Tested-by: Christian Lamparter <chunkeey at gmail.com>
> 
>  
> 
> Yep, works on my C-60.

Great. Thanks for testing!

-Gabor

> 
>  
> 
> Kernel is: Linux c-60 4.9.67
> 
> "OpenWrt SNAPSHOT, r5518+1-bfa42ef8f5"
> 
> Thanks
>