[PATCH] sf: Querying write-protect status before operating the flash

[chaochao2021666]

HI Jagan



sorry for the delay response.


And I have checked the maser. There is still a problem with this feature。


reproduce steps:
1. enable the flash protect function
2. using sf cmd to erase the flash. I can get the erase "OK",not the "error".



I think the root cause is that the detection mechanism is missing and to judge the permissions of the action

So pull this PR to improve the erase flow


another question:
how can I visit the  u-boot-spi/next? do there any link?





BRs
Chao



At 2021-06-29 21:50:28, "Jagan Teki" <jagan at amarulasolutions.com> wrote:
>On Tue, Jun 22, 2021 at 10:51 AM chao zeng <chaochao2021666 at 163.com> wrote:
>>
>> From: Chao Zeng <chao.zeng at siemens.com>
>>
>> When operating the write-protection flash,spi_flash_std_write() and
>> spi_flash_std_erase() would return wrong result.The flash is protected,
>> but write or erase the flash would show "OK".
>>
>> Check the flash write protection state if the write-protection has enbale
>> before operating the flash.
>>
>> Signed-off-by: Chao Zeng <chao.zeng at siemens.com>
>> ---
>
>Does it broken on master? if yes can you check in u-boot-spi/next?
>
>Jagan.