Messages in this thread Patch in this message | | | Subject | [RFC][PATCH] fix target_cpus() for summit subarch | From | john stultz <> | Date | Fri, 27 Aug 2004 17:24:48 -0700 |
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I've been hunting down a bug affecting IBM x440/x445 systems where the floppy driver would get spurious interrupts and would not initialize properly.
After digging James Cleverdon pointed out that target_cpus() is routing the interrupts to the clustered apic broadcast mask. This was causing multiple interrupts to show up, breaking the floppy init code.
This one-liner fix simply routes interrupts to the first cpu to resolve this issue.
Any comments or feedback would be appreciated.
thanks -john
===== include/asm-i386/mach-summit/mach_apic.h 1.38 vs edited ===== --- 1.38/include/asm-i386/mach-summit/mach_apic.h 2004-06-24 01:55:52 -07:00 +++ edited/include/asm-i386/mach-summit/mach_apic.h 2004-08-27 16:43:22 -07:00 @@ -19,7 +19,7 @@ static inline cpumask_t target_cpus(void) { - return CPU_MASK_ALL; + return cpumask_of_cpu(0); } #define TARGET_CPUS (target_cpus())
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