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Code Issues Releases Wiki Activity

soc: fsl: qbman: replace CPU 0 with any online CPU in hotplug handlers

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The existing code sets portal IRQ affinity to CPU 0 in the
offline hotplug handler. If CPU 0 is offline this is invalid.
Use a different online CPU instead.

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
This commit is contained in:
Madalin Bucur 2018-09-28 11:43:21 +03:00 committed by Li Yang
parent 9beaf661d6
commit d8bac81ed1
2 changed files with 7 additions and 3 deletions
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4
drivers/soc/fsl/qbman/bman_portal.c
View file

@ -65,7 +65,9 @@ static int bman_offline_cpu(unsigned int cpu)
if (!pcfg)
return 0;
irq_set_affinity(pcfg->irq, cpumask_of(0));
/* use any other online CPU */
cpu = cpumask_any_but(cpu_online_mask, cpu);
irq_set_affinity(pcfg->irq, cpumask_of(cpu));
return 0;
}

6
drivers/soc/fsl/qbman/qman_portal.c
View file

@ -195,8 +195,10 @@ static int qman_offline_cpu(unsigned int cpu)
if (p) {
pcfg = qman_get_qm_portal_config(p);
if (pcfg) {
irq_set_affinity(pcfg->irq, cpumask_of(0));
qman_portal_update_sdest(pcfg, 0);
/* select any other online CPU */
cpu = cpumask_any_but(cpu_online_mask, cpu);
irq_set_affinity(pcfg->irq, cpumask_of(cpu));
qman_portal_update_sdest(pcfg, cpu);
}
}
return 0;