Annoying warning message caused by double modifiers

[Cheng-Han Tsai <chenghan.tsai@xxxxxxxxx>]

Dear all,

Please help me solve this annoying warning messages.
This warning message happens when I enable the TCM support in my arm platform

drivers/input/keyboard/kpd.c:560: warning: passing argument 2 of 'request_irq' from incompatible pointer type
include/linux/interrupt.h:78: note: expected 'irq_handler_t' but argument is of type 'irqreturn_t (*)(int,  void *)'

kpd.c
static irqreturn_t __tcmfunc kpd_irq_handler(int irq, void *dev_id) {
       disable_irq(KP_IRQ_LINE);
       ...
       return IRQ_HANDLED;
}

Other definitions:
typedef int irqreturn_t;

#define __tcmfunc __attribute__((long_call)) __section(.tcm.text) noinline

Compiler seems to think “irqreturn_t” and “irqreturn_t __tcmfunc” are different types.
I try all different ways to add the __tcmfunc modifier, but the warning still shows up.

Could you give some hint?
Thank.

Best Regards,
Keene Tsai 蔡承翰
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