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m68k: Mac IRQ cleanup

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There are no slow IRQs on Macs since Roman Zippel's IRQ reorganisation that
went into 2.6.16 and removed mac_irq_list[] and the do_mac_irq_list()
dispatcher. (They were implemented in do_mac_irq_list() by lowering the IPL.)
Hence there's no more use for mutual exclusion in the Mac interrupt
dispatchers. Remove it.

Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Finn Thain
2007-05-01 22:32:58 +02:00
committed by Linus Torvalds
parent cd713ddc93
commit 217f6710c2
4 changed files with 7 additions and 29 deletions
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2
arch/m68k/mac/psc.c
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@@ -147,10 +147,8 @@ irqreturn_t psc_irq(int irq, void *dev_id)
irq_bit = 1;
do {
if (events & irq_bit) {
psc_write_byte(pIER, irq_bit);
psc_write_byte(pIFR, irq_bit);
m68k_handle_int(irq_num);
psc_write_byte(pIER, irq_bit | 0x80);
}
irq_num++;
irq_bit <<= 1;