2.6.21-rc1 fails to build on sparc64 when CONFIG_PCI_MSI=n:
gcc -Wp,-MD,arch/sparc64/kernel/.irq.o.d -nostdinc -isystem /home/mikpe/pkgs/linux-sparc64/gcc-4.1.2/lib/gcc/sparc64-unknown-linux-gnu/4.1.2/include -D__KERNEL__ -Iinclude -include include/linux/autoconf.h -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Os -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare -Wa,--undeclared-regs -fomit-frame-pointer -fno-stack-protector -Wdeclaration-after-statement -Wno-pointer-sign -Werror -D"KBUILD_STR(s)=#s" -D"KBUILD_BASENAME=KBUILD_STR(irq)" -D"KBUILD_MODNAME=KBUILD_STR(irq)" -c -o arch/sparc64/kernel/irq.o arch/sparc64/kernel/irq.c
cc1: warnings being treated as errors
arch/sparc64/kernel/irq.c:113: warning: 'virt_irq_free' defined but not used
make[1]: *** [arch/sparc64/kernel/irq.o] Error 1
make: *** [arch/sparc64/kernel] Error 2
Most other MSI stuff in irq.c is #ifdef CONFIG_PCI_MSI.
So do the same for virt_irq_free() to fix this problem.
Signed-off-by: Mikael Pettersson <mikpe@xxxxxxxx>
--- linux-2.6.21-rc1/arch/sparc64/kernel/irq.c.~1~ 2007-02-26 17:47:54.000000000 +0100
+++ linux-2.6.21-rc1/arch/sparc64/kernel/irq.c 2007-02-26 18:01:55.000000000 +0100
@@ -109,6 +109,7 @@ static unsigned char virt_irq_alloc(unsi
return ent;
}
+#ifdef CONFIG_PCI_MSI
static void virt_irq_free(unsigned int virt_irq)
{
unsigned int real_irq;
@@ -121,6 +122,7 @@ static void virt_irq_free(unsigned int v
__bucket(real_irq)->virt_irq = 0;
}
+#endif
static unsigned int virt_to_real_irq(unsigned char virt_irq)
{
-
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