[PATCH v4 16/27] mtd: spi-nor: Create a local SR cache

[Pratyush Yadav]

On Fri, Apr 03 2026, Miquel Raynal wrote:

> In order to be able to generate debugfs output without having to
> actually reach the flash, create a SPI NOR local cache of the status
> registers. What matters in our case are all the bits related to sector
> locking. As such, in order to make it clear that this cache is not
> intended to be used anywhere else, we zero the irrelevant bits.
>
> The cache is initialized once during the early init, and then maintained
> every time the write protection scheme is updated.

What is the reason for doing so? Do the reads have side effects?

>
> Suggested-by: Michael Walle <mwalle at kernel.org>
> Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
[...]

-- 
Regards,
Pratyush Yadav