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powerpc/xive: add error return value to xive_smp_probe()

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xive_smp_probe() calls xive_init_ipis() which can fail, but its
return value is currently ignored.  Change xive_smp_probe() to
return int so that errors can be propagated to callers.

This is a preparatory patch for the next one.

No functional change yet; the return value is always 0 at this point.

Signed-off-by: Gou Hao <gouhao@uniontech.com>
Reviewed-by: Wentao Guan <guanwentao@uniontech.com>
Reviewed-by: jiazhenyuan <jiazhenyuan@uniontech.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260727104215.184786-3-gouhao@uniontech.com
This commit is contained in:
Gou Hao 2026-07-27 18:42:12 +08:00 committed by Madhavan Srinivasan
parent f068fca7e8
commit ab5ae5dceb
2 changed files with 5 additions and 3 deletions
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4
arch/powerpc/include/asm/xive.h
View File

@ -91,7 +91,7 @@ static inline bool xive_enabled(void) { return __xive_enabled; }
bool xive_spapr_init(void);
bool xive_native_init(void);
void xive_smp_probe(void);
int xive_smp_probe(void);
int xive_smp_prepare_cpu(unsigned int cpu);
void xive_smp_setup_cpu(void);
void xive_smp_disable_cpu(void);
@ -153,7 +153,7 @@ static inline bool xive_enabled(void) { return false; }
static inline bool xive_spapr_init(void) { return false; }
static inline bool xive_native_init(void) { return false; }
static inline void xive_smp_probe(void) { }
static inline int xive_smp_probe(void) { return -EINVAL; }
static inline int xive_smp_prepare_cpu(unsigned int cpu) { return -EINVAL; }
static inline void xive_smp_setup_cpu(void) { }
static inline void xive_smp_disable_cpu(void) { }

4
arch/powerpc/sysdev/xive/common.c
View File

@ -1265,7 +1265,7 @@ noinstr static void xive_cleanup_cpu_ipi(unsigned int cpu, struct xive_cpu *xc)
xive_ops->put_ipi(cpu, xc);
}
void __init xive_smp_probe(void)
int __init xive_smp_probe(void)
{
smp_ops->cause_ipi = xive_cause_ipi;
@ -1274,6 +1274,8 @@ void __init xive_smp_probe(void)
/* Allocate and setup IPI for the boot CPU */
xive_setup_cpu_ipi(smp_processor_id());
return 0;
}
#endif /* CONFIG_SMP */