linux-dev/arch/m68k/sun3/sun3ints.c, branch linus/master

m68k: Remove set_fs()

2021-09-24T11:35:07Z

Add a m68k-only set_fc helper to set the SFC and DFC registers for the few places that need to override it for special MM operations, but disconnect that from the deprecated kernel-wide set_fs() API. Note that the SFC/DFC registers are context switched, so there is no need to disable preemption. Partially based on an earlier patch from Linus Torvalds . Signed-off-by: Christoph Hellwig Reviewed-by: Michael Schmitz Tested-by: Michael Schmitz Link: https://lore.kernel.org/r/20210916070405.52750-7-hch@lst.de Signed-off-by: Geert Uytterhoeven

m68k: sun3/sun3c: use legacy_timer_tick

2020-10-30T20:57:06Z

These two are different from all other machines: * sun3 does not call timer_routine() but open-codes it except for the profile_tick() call that appears to be unintentionally missing. * sun3x has a commented-out timer irq handler but no functional timer tick I could find. Change both to calling the new legacy_timer_tick here, which includes the call to profile_tick() but does not fix sun3x as that is still commented out. Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Reviewed-by: Linus Walleij Signed-off-by: Arnd Bergmann

m68k: Call timer_interrupt() with interrupts disabled

2019-03-25T09:22:24Z

Some platforms execute their timer handler with the interrupt priority level set below 6. That means the handler could be interrupted by another driver and this could lead to re-entry of the timer core. Avoid this by use of local_irq_save/restore for timer interrupt dispatch. This provides mutual exclusion around the timer interrupt flag access which is needed later in this series for the clocksource conversion. Reported-by: Thomas Gleixner Link: http://lkml.kernel.org/r/alpine.DEB.2.21.1811131407120.2697@nanos.tec.linutronix.de Signed-off-by: Finn Thain Signed-off-by: Geert Uytterhoeven

m68k/sun3: Get interrupts working again

2012-11-14T07:50:57Z

SUN3 Intregister is not for enabling individual interrupts, but to enable special interrupts. So using it for interrupt enable/disable was wrong. The clock interrupt needs some special treatment to keep ticking. Signed-off-by: Thomas Bogendoerfer Signed-off-by: Geert Uytterhoeven

m68k/irq: Remove obsolete support for user vector interrupt fixups

2011-11-08T21:35:52Z

It was used on Apollo only, before its conversion to genirq. Signed-off-by: Geert Uytterhoeven

m68k/irq: Remove obsolete m68k irq framework

2011-11-08T21:35:52Z

Signed-off-by: Geert Uytterhoeven

m68k/sun3: Convert Sun3/3x to genirq

2011-11-08T21:35:52Z

Replace the custom irq handler that masks the irq and calls do_IRQ(), and the unmasking in the individual handlers, by handle_level_irq(). Signed-off-by: Geert Uytterhoeven Cc: Sam Creasey

m68k/sun3: Use the kstat_irqs_cpu() wrapper

2011-11-08T21:35:51Z

Signed-off-by: Geert Uytterhoeven Acked-by: Sam Creasey

m68k/irq: Rename {,__}m68k_handle_int()

2011-11-08T21:35:48Z

- Rename m68k_handle_int() to generic_handle_irq(), and drop the unneeded asmlinkage, - Rename __m68k_handle_int() to do_IRQ(). Signed-off-by: Geert Uytterhoeven

m68k/irq: Add m68k_setup_irq_controller()

2011-11-08T21:35:48Z

This is a wrapper around m68k_setup_irq_chip() that discards its dummy second parameter, to ease the future transition to genirq. Signed-off-by: Geert Uytterhoeven