Dmitry Torokhov wrote:
On 10/6/06, Ingo Molnar <[email protected]> wrote:* Jeff Garzik <[email protected]> wrote: > >but pt_regs is alot less frequently used than irq - and where it's > >used they arent "drivers" but mostly arch level code like hw-timer > >handlers. > > Nonetheless the -vast majority- of drivers don't use the argument at > all, and the minority that do use it are not modern drivers. i'm all for changing that too :)What drivers use irq argument? I know i8042 does but only to detect whether interrupt routine was called because irq was raised or it was called manually and I can use dev_id for that...
Ancient ISA legacys, a few powermac drivers, and a lot of printk's. Your gut instinct is correct -- outside of printk, it is largely used to differentiate callers.
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- References:
- Re: [PATCH 3/3] IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
- From: Andrew Morton <[email protected]>
- [PATCH 1/3] IRQ: Typedef the IRQ flow handler function type
- From: David Howells <[email protected]>
- Re: [PATCH 3/3] IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
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- Re: [PATCH 3/3] IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
- From: Jeff Garzik <[email protected]>
- Re: [PATCH 3/3] IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
- From: Alan Cox <[email protected]>
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