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SubjectAlpha compile error on 2.4.2-ac3 (irq_err_count)
hi...

Machine: DEC-Alpha XL300 (Alcor/XLT)
Kernel: 2.4.2-ac3

Compile-Error:
make[1]: Entering directory `/usr/src/linux-2.4.2-ac3/arch/alpha/kernel'
gcc -D__KERNEL__ -I/usr/src/linux-2.4.2-ac3/include -Wall
-Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -pipe
-mno-fp-regs -ffixed-8 -Wa,-mev6 -c -o irq_alpha.o irq_alpha.c
irq_alpha.c: In function `dummy_perf':
irq_alpha.c:33: `irq_err_count' undeclared (first use in this function)
irq_alpha.c:33: (Each undeclared identifier is reported only once
irq_alpha.c:33: for each function it appears in.)
irq_alpha.c: In function `do_entInt':
irq_alpha.c:54: `irq_err_count' undeclared (first use in this function)
irq_alpha.c: In function `process_mcheck_info':
irq_alpha.c:152: warning: unused variable `cpu'
make[1]: *** [irq_alpha.o] Error 1
make[1]: Leaving directory `/usr/src/linux-2.4.2-ac3/arch/alpha/kernel'
make: *** [_dir_arch/alpha/kernel] Error 2


Temporary fix to get it compiling again:
--- linux/include/asm-alpha/hw_irq.h~ Fri Feb 23 23:45:39 2001
+++ linux/include/asm-alpha/hw_irq.h Fri Feb 23 23:59:51 2001
@@ -5,6 +5,8 @@

static inline void hw_resend_irq(struct hw_interrupt_type *h, unsigned int i) {}

+extern volatile unsigned long irq_err_count;
+
#ifdef CONFIG_ALPHA_GENERIC
#define ACTUAL_NR_IRQS alpha_mv.nr_irqs
#else

But the real bug seems to be that the changes to irq_err_count ("atomic_t"
instead of "volatile unsigned long", and moving it from linux/irq.h to
asm/hw_irq.h are done for i386 but not for the other architectures.


c'ya
sven

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