Re: [patch] HWUART instead of BTUART on the h5550 (workaround for Bluetooth UART overruns)

On Wed, Mar 09, 2005 at 04:12:32PM +0100, Catalin Drula wrote:
> In addition to the changes strictly related to the HWUART, I have also
> backported some of the changes made in 2.14.19-rmk7-pxa2 to the irq code
> and the entry code in arch/arm/kernel/entry-*.S. These were necessary to
> remove some bugs (for example, some irq numbers were hardcoded instead of
> being relative to PXA_IRQ_SKIP as they should have been).

I have a question about a change the patch makes to
include/asm-arm/arch-pxa/irqs.h. There is a little config magic there
and a line that says:
#define PXA_IRQ_SKIP 6 /* Only the first 7 IRQs are reserved, but stupid drivers don't like irq 0 so */

Think you could expound on what stupid drivers don't like irq 0. I
noticed that rmk7-pxa2 has a PXA_IRQ_SKIP of 7 (but they obviously could
give a flip about h5400 and bluetooth). It would be nice to get the
stupid drivers fixed instead so it is closer to mainline.

Thanks for all the hardwork. I am going to go out and get a bluetooth
device so I can try it out.

Oh, btw - if you get the gumption, consider trying out the HWUART with
the full rmk7-pxa2 patch against hh 2.4 cvs. Available here:
http://hovland.org/familiar/diff.linux-2.4.19-rmk7-pxa2-hh1

E

-- 
Erik Hovland
mail: erik AT hovland DOT org
web: http://hovland.org/
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