when to use devm_request_irq and irq_set_chained_handler_and_data

bharat kumar gogada bharatku at xilinx.com
Wed Oct 7 08:29:28 PDT 2015

when to use devm_request_irq and when to use irq_set_chained_handler_and_data.
I see that some drivers are not using devm_request_irq instead using
irq_set_chained_handler_and_data for setting up irq handling.

If we use  irq_set_chained_handler_and_data will it show up in cat

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