Warning: flash_write_protection_set is deprecated while using low level API for external flash.

[Chetan Kale]

Hello, 

I am using flash_write_protection_set function with few low level function call for accessing extremal flash with nRF9160. And because of that I am facing one warning "warning: flash_write_protection_set is deprecated [Wdeprecated-declarations]". Can you please help me how to remove this warning from the project. I read few documents/Nordic forum tickets but did not found any solution for the same. 

Thank you!

Regards,

Chetan

[Øivind]

Hi,

flash_write_protection_set() has no effect since being deprecated, and all calls to the function can safely be removed.

• flash_write_protection_set() has been deprecated and will be removed in Zephyr 2.8. Responsibility for write/erase protection management has been moved to the driver-specific implementation of the flash_write() and flash_erase() API calls. All in-tree flash drivers have been updated, and the protect implementation removed from their API tables. During the deprecation period user code invoking flash_write_protection_set() will have no effect, but the flash_write() and flash_erase() driver shims will wrap their calls with calls to the protect implementation if it is present in the API table. Out-of-tree drivers must be updated before the wrapping in the shims is removed when the deprecation period ends.

From "Flash" under "Drivers and Sensors":

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/releases/release-notes-2.6.html?highlight=flash_write_protection_set#drivers-and-sensors

[Chetan Kale]

Hi,

Does this warning will create any impact on my current implementation ? 

Thank you!

Regards,

Chetan

[Øivind]

No, the function just returns 0.

static inline int z_impl_flash_write_protection_set(const struct device *dev,
						    bool enable)
{
	ARG_UNUSED(dev);
	ARG_UNUSED(enable);

	return 0;
}

[Chetan Kale]

Thank you! I am closing the ticket. 

Regards,

Chetan