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powerpc: Fix build failure in sysdev/mpic.c for MPIC_WEIRD=y

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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 <paul.gortmaker@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Paul Gortmaker 2014-02-07 14:50:58 -05:00 committed by Benjamin Herrenschmidt
parent b28a960c42
commit 0215b4aa06
1 changed files with 19 additions and 19 deletions
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38
arch/powerpc/sysdev/mpic.c
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@ -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 */