diff options
| author | Cédric Le Goater <clg@kaod.org> | 2021-07-01 15:27:27 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-08-10 23:14:58 +1000 |
| commit | 9a014f456881e947bf8cdd8c984a207097e6c096 (patch) | |
| tree | 445a0619a6b4d8d61852494073e8785a3a5a2656 /arch/powerpc/sysdev/xive | |
| parent | 07817a578a7a79638537480b8847dc7a12f293c5 (diff) | |
| download | linux-9a014f456881e947bf8cdd8c984a207097e6c096.tar.bz2 | |
powerpc/pseries/pci: Add a msi_free() handler to clear XIVE data
The MSI domain clears the IRQ with msi_domain_free(), which calls
irq_domain_free_irqs_top(), which clears the handler data. This is a
problem for the XIVE controller since we need to unmap MMIO pages and
free a specific XIVE structure.
The 'msi_free()' handler is called before irq_domain_free_irqs_top()
when the handler data is still available. Use that to clear the XIVE
controller data.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210701132750.1475580-10-clg@kaod.org
Diffstat (limited to 'arch/powerpc/sysdev/xive')
| -rw-r--r-- | arch/powerpc/sysdev/xive/common.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index 0631c97b3a14..107f442d3411 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -975,6 +975,8 @@ EXPORT_SYMBOL_GPL(is_xive_irq); void xive_cleanup_irq_data(struct xive_irq_data *xd) { + pr_debug("%s for HW %x\n", __func__, xd->hw_irq); + if (xd->eoi_mmio) { iounmap(xd->eoi_mmio); if (xd->eoi_mmio == xd->trig_mmio) @@ -1016,7 +1018,7 @@ static int xive_irq_alloc_data(unsigned int virq, irq_hw_number_t hw) return 0; } -static void xive_irq_free_data(unsigned int virq) +void xive_irq_free_data(unsigned int virq) { struct xive_irq_data *xd = irq_get_handler_data(virq); @@ -1026,6 +1028,7 @@ static void xive_irq_free_data(unsigned int virq) xive_cleanup_irq_data(xd); kfree(xd); } +EXPORT_SYMBOL_GPL(xive_irq_free_data); #ifdef CONFIG_SMP |