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SubjectRe: [patch] "big IRQ lock" removal, 2.5.27-A9

On Sun, 21 Jul 2002, Christoph Hellwig wrote:

> > the genhd.c bit is safe as well, removed the comment.
> Is there any reason the sti is there at all? In -dj almost all drivers
> use module_init() now so it becomes increasingly useless..

well, indeed. While the sti() can be understood to a certain degree - we
used to boot with the IRQ lock on and accidentally leaving it enabled can
cause problems - but otherwise preceeding code should not disable
interrupts in an unbalanced way. I've removed the __sti() from my tree.

there's even more ancient code in the block driver init path, eg. in

outb_p(0xc, 0x3f2);

i suspect this is ancient Linux code. 0x3f2 is one of the floppy
controller ports - many modern x86 boxes do not even have a floppy
controller! I've removed this from my tree as well - if this is needed at
all then it belongs into the floppy driver. Latest patch is at:


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