Backport request for two spi-nor otcal dtr odd length/address reads and writes patches to 6.12.y.

Backport request for two spi-nor otcal dtr odd length/address reads and writes patches to 6.12.y.

[Zhang, Liyin (CN)]

Hi stable team,

Please consider applying the following mainlined patches to the 6.12.y 
stable tree:

   commit f156b23df6a84efb2f6686156be94d4988568954
   "mtd: spi-nor: core: avoid odd length/address reads on 8D-8D-8D mode"

   commit 17926cd770ec837ed27d9856cf07f2da8dda4131
   "mtd: spi-nor: core: avoid odd length/address writes in 8D-8D-8D mode"

Both patches are already present in mainline, 6.19, and 6.18.

Both patches fix the same class of bug: Octal DTR (8D-8D-8D) mode 
requires both the start address and transfer length to be even.
And we actually encounter the same issues on different hardwares which 
supporting octal dtr in multiple earlier releases.

Now these two patches can be cleanly applied to 6.12 branch.
Would you please help backport them to 6.12 first?

And for 6.6 and 6.1, there are small conflicts. I'd like to submit 
patches later.

Thanks for your time.

Regards,

Liyin Zhang

Re: Backport request for two spi-nor otcal dtr odd length/address reads and writes patches to 6.12.y.

[Greg KH]

On Mon, Mar 23, 2026 at 03:53:09PM +0800, Zhang, Liyin (CN) wrote:
> Hi stable team,
> 
> Please consider applying the following mainlined patches to the 6.12.y
> stable tree:
> 
>   commit f156b23df6a84efb2f6686156be94d4988568954
>   "mtd: spi-nor: core: avoid odd length/address reads on 8D-8D-8D mode"
> 
>   commit 17926cd770ec837ed27d9856cf07f2da8dda4131
>   "mtd: spi-nor: core: avoid odd length/address writes in 8D-8D-8D mode"
> 
> Both patches are already present in mainline, 6.19, and 6.18.
> 
> Both patches fix the same class of bug: Octal DTR (8D-8D-8D) mode requires
> both the start address and transfer length to be even.
> And we actually encounter the same issues on different hardwares which
> supporting octal dtr in multiple earlier releases.
> 
> Now these two patches can be cleanly applied to 6.12 branch.
> Would you please help backport them to 6.12 first?

Now queued up, thanks.

greg k-h