I removed the IRAM_ATTR from function prototype and kept in the function only. The warning was resolved.

Hello,

I'am facing the similar problem with migration to sdk5.0.
I'am using IRAM_ATTR twice in my code, so i get two warnings from Eclipse IDE:

ignoring attribute 'section (".iram1.2")' because it conflicts with previous 'section (".iram1.0")' [-Wattributes]
ignoring attribute 'section (".iram1 ...