From 0215b4aa069b989c963d594cf0f1c705e21d8ca5 Mon Sep 17 00:00:00 2001 From: Paul Gortmaker Date: Fri, 7 Feb 2014 14:50:58 -0500 Subject: [PATCH] powerpc: Fix build failure in sysdev/mpic.c for MPIC_WEIRD=y Commit 446f6d06fab0b49c61887ecbe8286d6aaa796637 ("powerpc/mpic: Properly set default triggers") breaks the mpc7447_hpc_defconfig as follows: CC arch/powerpc/sysdev/mpic.o arch/powerpc/sysdev/mpic.c: In function 'mpic_set_irq_type': arch/powerpc/sysdev/mpic.c:886:9: error: case label does not reduce to an integer constant arch/powerpc/sysdev/mpic.c:890:9: error: case label does not reduce to an integer constant arch/powerpc/sysdev/mpic.c:894:9: error: case label does not reduce to an integer constant arch/powerpc/sysdev/mpic.c:898:9: error: case label does not reduce to an integer constant Looking at the cpp output (gcc 4.7.3), I see: case mpic->hw_set[MPIC_IDX_VECPRI_SENSE_EDGE] | mpic->hw_set[MPIC_IDX_VECPRI_POLARITY_POSITIVE]: The pointer into an array appears because CONFIG_MPIC_WEIRD=y is set for this platform, thus enabling the following: ------------------- #ifdef CONFIG_MPIC_WEIRD static u32 mpic_infos[][MPIC_IDX_END] = { [0] = { /* Original OpenPIC compatible MPIC */ [...] #define MPIC_INFO(name) mpic->hw_set[MPIC_IDX_##name] #else /* CONFIG_MPIC_WEIRD */ #define MPIC_INFO(name) MPIC_##name #endif /* CONFIG_MPIC_WEIRD */ ------------------- Here we convert the case section to if/else if, and also add the equivalent of a default case to warn about unknown types. Boot tested on sbc8548, build tested on all defconfigs. Signed-off-by: Paul Gortmaker Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/sysdev/mpic.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-) diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c index 0e166ed4cd16..8209744b2829 100644 --- a/arch/powerpc/sysdev/mpic.c +++ b/arch/powerpc/sysdev/mpic.c @@ -886,25 +886,25 @@ int mpic_set_irq_type(struct irq_data *d, unsigned int flow_type) /* Default: read HW settings */ if (flow_type == IRQ_TYPE_DEFAULT) { - switch(vold & (MPIC_INFO(VECPRI_POLARITY_MASK) | - MPIC_INFO(VECPRI_SENSE_MASK))) { - case MPIC_INFO(VECPRI_SENSE_EDGE) | - MPIC_INFO(VECPRI_POLARITY_POSITIVE): - flow_type = IRQ_TYPE_EDGE_RISING; - break; - case MPIC_INFO(VECPRI_SENSE_EDGE) | - MPIC_INFO(VECPRI_POLARITY_NEGATIVE): - flow_type = IRQ_TYPE_EDGE_FALLING; - break; - case MPIC_INFO(VECPRI_SENSE_LEVEL) | - MPIC_INFO(VECPRI_POLARITY_POSITIVE): - flow_type = IRQ_TYPE_LEVEL_HIGH; - break; - case MPIC_INFO(VECPRI_SENSE_LEVEL) | - MPIC_INFO(VECPRI_POLARITY_NEGATIVE): - flow_type = IRQ_TYPE_LEVEL_LOW; - break; - } + int vold_ps; + + vold_ps = vold & (MPIC_INFO(VECPRI_POLARITY_MASK) | + MPIC_INFO(VECPRI_SENSE_MASK)); + + if (vold_ps == (MPIC_INFO(VECPRI_SENSE_EDGE) | + MPIC_INFO(VECPRI_POLARITY_POSITIVE))) + flow_type = IRQ_TYPE_EDGE_RISING; + else if (vold_ps == (MPIC_INFO(VECPRI_SENSE_EDGE) | + MPIC_INFO(VECPRI_POLARITY_NEGATIVE))) + flow_type = IRQ_TYPE_EDGE_FALLING; + else if (vold_ps == (MPIC_INFO(VECPRI_SENSE_LEVEL) | + MPIC_INFO(VECPRI_POLARITY_POSITIVE))) + flow_type = IRQ_TYPE_LEVEL_HIGH; + else if (vold_ps == (MPIC_INFO(VECPRI_SENSE_LEVEL) | + MPIC_INFO(VECPRI_POLARITY_NEGATIVE))) + flow_type = IRQ_TYPE_LEVEL_LOW; + else + WARN_ONCE(1, "mpic: unknown IRQ type %d\n", vold); } /* Apply to irq desc */ -- 2.30.2