[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>

diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c
index ece13cbf9950a1b69a966b2b99766eeeeeca2be7..7f812641790c8c8c9bfbe06ab1d675c2014574f8 100644 (file)
--- 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 c44df4a4a331cc07ea08815ebfc61c3f98b2ed38..e0d3c8bfb40864791b6c333e3926be8212ba7bc5 100644 (file)
--- 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 849c9488c7f8ddbb27b4ba6b1b3302848bf41865..84aceca6c05c16297ce244431c1cbdb0f741a441 100644 (file)
--- 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;