Re: [PATCH 1/4] Blackfin: arch patch for 2.6.18

From: Robin Getz
Date: Wed Sep 27 2006 - 13:20:05 EST

Arnd wrote:
The irq_flags are not declared anywhere in the code you just posted,

Yeah - they are already defined, and used in other macros in system.h - which is why I put the macro there.

It would also be better to convert macros like this one to inline functions in general. The rule is: if you can use either a macro or an inline function with the same effect, use an inline function.

OK - I was just doing the similar thing to what already exists in ./asm-blackfin/system.h

#define local_irq_enable() do { \
__asm__ __volatile__ ( \
"sti %0;" \
::"d"(irq_flags)); \
} while (0)

which could be simplified to:

#define local_irq_enable() __asm__ __volatile__ ("sti %0;" ::"d"(irq_flags));

which is the same as what is in ./asm-i386/system.h - isn't it?

#define local_irq_disable() __asm__ __volatile__("cli": : :"memory")
#define local_irq_enable() __asm__ __volatile__("sti": : :"memory")

We can do it anyway that makes sense/improves readability - it all compiles to the same thing...

-Robin -
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