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authorGeert Uytterhoeven <geert@linux-m68k.org>2006-10-09 22:23:31 +0200
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-09 14:54:46 -0700
commit69961c375288bdab7604e0bb1c8d22999bb8a347 (patch)
tree869e81d9798a8b41e7e9b35a992fe5794e9f28aa /arch/m68k
parentda96d0b58adddf3bdeaa9644ac74f0dcc9039407 (diff)
downloadlinux-69961c375288bdab7604e0bb1c8d22999bb8a347.tar.bz2
[PATCH] m68k/Atari: Interrupt updates
Misc Atari fixes: - initialize correct number of atari irqs - silence vbl interrupt until it's used by atafb - use mdelay() to read clock if necessary Signed-off-by: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/m68k')
-rw-r--r--arch/m68k/atari/ataints.c9
-rw-r--r--arch/m68k/atari/time.c9
-rw-r--r--arch/m68k/kernel/ints.c1
3 files changed, 15 insertions, 4 deletions
diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c
index ece13cbf9950..7f812641790c 100644
--- a/arch/m68k/atari/ataints.c
+++ b/arch/m68k/atari/ataints.c
@@ -332,6 +332,9 @@ static void atari_shutdown_irq(unsigned int irq)
atari_disable_irq(irq);
atari_turnoff_irq(irq);
m68k_irq_shutdown(irq);
+
+ if (irq == IRQ_AUTO_4)
+ vectors[VEC_INT4] = falcon_hblhandler;
}
static struct irq_controller atari_irq_controller = {
@@ -356,7 +359,7 @@ static struct irq_controller atari_irq_controller = {
void __init atari_init_IRQ(void)
{
- m68k_setup_user_interrupt(VEC_USER, 192, NULL);
+ m68k_setup_user_interrupt(VEC_USER, NUM_ATARI_SOURCES - IRQ_USER, NULL);
m68k_setup_irq_controller(&atari_irq_controller, 1, NUM_ATARI_SOURCES - 1);
/* Initialize the MFP(s) */
@@ -403,8 +406,10 @@ void __init atari_init_IRQ(void)
* gets overruns)
*/
- if (!MACH_IS_HADES)
+ if (!MACH_IS_HADES) {
vectors[VEC_INT2] = falcon_hblhandler;
+ vectors[VEC_INT4] = falcon_hblhandler;
+ }
}
if (ATARIHW_PRESENT(PCM_8BIT) && ATARIHW_PRESENT(MICROWIRE)) {
diff --git a/arch/m68k/atari/time.c b/arch/m68k/atari/time.c
index c44df4a4a331..e0d3c8bfb408 100644
--- a/arch/m68k/atari/time.c
+++ b/arch/m68k/atari/time.c
@@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/rtc.h>
#include <linux/bcd.h>
+#include <linux/delay.h>
#include <asm/atariints.h>
@@ -212,8 +213,12 @@ int atari_tt_hwclk( int op, struct rtc_time *t )
* additionally the RTC_SET bit is set to prevent an update cycle.
*/
- while( RTC_READ(RTC_FREQ_SELECT) & RTC_UIP )
- schedule_timeout_interruptible(HWCLK_POLL_INTERVAL);
+ while( RTC_READ(RTC_FREQ_SELECT) & RTC_UIP ) {
+ if (in_atomic() || irqs_disabled())
+ mdelay(1);
+ else
+ schedule_timeout_interruptible(HWCLK_POLL_INTERVAL);
+ }
local_irq_save(flags);
RTC_WRITE( RTC_CONTROL, ctrl | RTC_SET );
diff --git a/arch/m68k/kernel/ints.c b/arch/m68k/kernel/ints.c
index 849c9488c7f8..84aceca6c05c 100644
--- a/arch/m68k/kernel/ints.c
+++ b/arch/m68k/kernel/ints.c
@@ -132,6 +132,7 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
{
int i;
+ BUG_ON(IRQ_USER + cnt >= NR_IRQS);
m68k_first_user_vec = vec;
for (i = 0; i < cnt; i++)
irq_controller[IRQ_USER + i] = &user_irq_controller;