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Subject[PATCH] powerpc/mpic: Cleanup irq vector accounting
Date
Available vector space accounts ipis and timer interrupts
while spurious vector was not accounted. Also later
mpic_setup_error_int() escape one more vector, seemingly it
assumes one spurious vector.

Signed-off-by: Bharat Bhushan <Bharat.Bhushan@nxp.com>
---
arch/powerpc/sysdev/fsl_mpic_err.c | 2 +-
arch/powerpc/sysdev/mpic.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/powerpc/sysdev/fsl_mpic_err.c b/arch/powerpc/sysdev/fsl_mpic_err.c
index 488ec45..2a98837 100644
--- a/arch/powerpc/sysdev/fsl_mpic_err.c
+++ b/arch/powerpc/sysdev/fsl_mpic_err.c
@@ -76,7 +76,7 @@ int mpic_setup_error_int(struct mpic *mpic, int intvec)
mpic->flags |= MPIC_FSL_HAS_EIMR;
/* allocate interrupt vectors for error interrupts */
for (i = MPIC_MAX_ERR - 1; i >= 0; i--)
- mpic->err_int_vecs[i] = --intvec;
+ mpic->err_int_vecs[i] = intvec--;

return 0;
}
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index 1d4e0ef6..e098d1e 100644
--- a/arch/powerpc/sysdev/mpic.c
+++ b/arch/powerpc/sysdev/mpic.c
@@ -1380,12 +1380,12 @@ struct mpic * __init mpic_alloc(struct device_node *node,
* global vector number space, as in case of ipis
* and timer interrupts.
*
- * Available vector space = intvec_top - 12, where 12
+ * Available vector space = intvec_top - 13, where 13
* is the number of vectors which have been consumed by
- * ipis and timer interrupts.
+ * ipis, timer interrupts and spurious.
*/
if (fsl_version >= 0x401) {
- ret = mpic_setup_error_int(mpic, intvec_top - 12);
+ ret = mpic_setup_error_int(mpic, intvec_top - 13);
if (ret)
return NULL;
}
--
1.9.3
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