On omap24xx, INTCPS_SIR_IRQ_OFFSET bits [6:0] contains the current active interrupt number. However, on 34xx INTCPS_SIR_IRQ_OFFSET bits [31:7] also contains the SPURIOUSIRQFLAG, which gets set if the interrupt sorting information is invalid. If the SPURIOUSIRQFLAG bits are not ignored, the interrupt code will occasionally produce a bunch of confusing errors: irq -33, desc: c02ddcc8, depth: 0, count: 0, unhandled: 0 ->handle_irq(): c006f23c, handle_bad_irq+0x0/0x22c ->chip(): 00000000, 0x0 ->action(): 00000000 Fix this by masking out only the ACTIVEIRQ bits. Also fix a confusing comment. Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> --- arch/arm/plat-omap/include/mach/entry-macro.S | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/arch/arm/plat-omap/include/mach/entry-macro.S b/arch/arm/plat-omap/include/mach/entry-macro.S index 030118e..2276f89 100644 --- a/arch/arm/plat-omap/include/mach/entry-macro.S +++ b/arch/arm/plat-omap/include/mach/entry-macro.S @@ -65,7 +65,8 @@ #include <mach/omap34xx.h> #endif -#define INTCPS_SIR_IRQ_OFFSET 0x0040 /* Active interrupt number */ +#define INTCPS_SIR_IRQ_OFFSET 0x0040 /* Active interrupt offset */ +#define ACTIVEIRQ_MASK 0x7f /* Active interrupt bits */ .macro disable_fiq .endm @@ -88,6 +89,7 @@ cmp \irqnr, #0x0 2222: ldrne \irqnr, [\base, #INTCPS_SIR_IRQ_OFFSET] + and \irqnr, \irqnr, #ACTIVEIRQ_MASK /* Clear spurious bits */ .endm -- 1.5.6.rc3.21.g8c6b5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
