Removing ifdefs makes the changes more invasive and the suspend/resume
code then has to be addressed, which I've avoided.
The suspend/resume code path can't be tested on m68k macs and the common
code paths I can't easily test on a powermac.
This patch should not be needed because the
On most 68k Macs the SCC IRQ is an autovector interrupt and cannot be
masked. This can be a problem when pmac_zilog starts up.
For example, the serial debugging code in arch/m68k/kernel/head.S may be
used beforehand. It disables the SCC interrupts at the chip but doesn't
ack them. Then when a
On Fri, 25 Nov 2011 01:34:58 +1100 (EST)
Finn Thain fth...@telegraphics.com.au wrote:
On most 68k Macs the SCC IRQ is an autovector interrupt and cannot be
masked. This can be a problem when pmac_zilog starts up.
For example, the serial debugging code in arch/m68k/kernel/head.S may be
On most 68k Macs the SCC IRQ is an autovector interrupt and cannot be
masked. This can be a problem when pmac_zilog starts up.
Wouldn't this also happen if the interrupt were shared?
Hopefully nothing vaguely modern uses the borked Zilog 8530 SCC
(which I presume is the part in question -
On Thu, 2011-11-24 at 14:56 +, Alan Cox wrote:
This patch has been tested on a variety of m68k Macs but no
PowerMacs.
I am re-sending this patch Cc linux-serial. It still needs a
suitable ack
so that Geert can push it through his tree.
Given the change should work for all
On Thu, 2011-11-24 at 15:28 +, David Laight wrote:
On most 68k Macs the SCC IRQ is an autovector interrupt and cannot be
masked. This can be a problem when pmac_zilog starts up.
Wouldn't this also happen if the interrupt were shared?
Hopefully nothing vaguely modern uses the borked
On Thu, 24 Nov 2011, Alan Cox wrote:
Given the change should work for all hardware do we really need the
ifdefs. Far better I would have thought to just change it so we don't
have to maintain what is effectively two versions of the code between
now and 2038.
I agree.
So no ack from
On most 68k Macs the SCC IRQ is an autovector interrupt and cannot be masked.
This can be a problem when pmac_zilog starts up.
For example, the serial debugging code in arch/m68k/kernel/head.S may be used
beforehand. It disables the SCC interrupts at the chip but doesn't ack them.
Then when a
