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ARM: davinci: da8xx: fix interrupt handling

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CP_INTC code in entry-macro.S code reads SECR1n register to see if
an interrupt was indeed pending. This register is actually marked as
write-only in the OMAP-L138 TRM. Moreover, the code just checks to see
the entire register is non-zero and does not check a specific interrupt
number.

Fix this to use interrupt pending bit in GIPR register for this purpose.
GIPR register is already being read to know the highest priority interrupt
pending.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
This commit is contained in:
Sekhar Nori 2012-06-20 23:10:13 +05:30
parent 485802a6c5
commit bbb33445b9
1 changed files with 3 additions and 5 deletions
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8
arch/arm/mach-davinci/include/mach/entry-macro.S
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@ -30,12 +30,10 @@
#endif
#if defined(CONFIG_CP_INTC)
1001: ldr \irqnr, [\base, #0x80] /* get irq number */
mov \tmp, \irqnr, lsr #31
and \irqnr, \irqnr, #0xff /* irq is in bits 0-9 */
mov \tmp, \irqnr, lsr #3
and \tmp, \tmp, #0xfc
add \tmp, \tmp, #0x280 /* get the register offset */
ldr \irqstat, [\base, \tmp] /* get the intc status */
cmp \irqstat, #0x0
and \tmp, \tmp, #0x1
cmp \tmp, #0x1
#endif
1002:
.endm