Commit 7d8484c4 authored by Heiko Carstens's avatar Heiko Carstens Committed by Vasily Gorbik
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s390/irq: use assignment instead of cast 



Change struct ext_code to contain a union which allows to simply
assign the int_code instead of using a cast.

In order to keep the patch small the anonymous union is embedded
within the existing struct instead of changing the struct ext_code to
a union.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 998e7800

arch/s390/include/asm/irq.h

+7 −2
Original line number Diff line number Diff line
@@ -81,9 +81,14 @@ static __always_inline void inc_irq_stat(enum interruption_class irq) 
}



struct ext_code {

	union {

		struct {

			unsigned short subcode;

			unsigned short code;

		};

		unsigned int int_code;

	};

};



typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long);

arch/s390/kernel/irq.c

+1 −1
Original line number Diff line number Diff line
@@ -342,7 +342,7 @@ static irqreturn_t do_ext_interrupt(int irq, void *dummy) 
	struct ext_int_info *p;

	int index;



	ext_code = *(struct ext_code *) &regs->int_code;

	ext_code.int_code = regs->int_code;

	if (ext_code.code != EXT_IRQ_CLK_COMP)

		set_cpu_flag(CIF_NOHZ_DELAY);