The cxl driver cannot disable the interrupt at the device level and has
to use disable_irq[_nosync] instead.
To avoid the implementation of the lazy optimisation (the interrupt is
marked disabled, but the hardware is left unmasked), we can disable it,
for a particular irq line, by calling
'irq_set_status_flags(irq, IRQ_DISABLE_UNLAZY)'.
Signed-off-by: Christophe Lombard <clomb...@linux.vnet.ibm.com>
---
drivers/misc/cxl/guest.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c
index f58b4b6c..dc476e1 100644
--- a/drivers/misc/cxl/guest.c
+++ b/drivers/misc/cxl/guest.c
@@ -389,6 +389,7 @@ static void disable_afu_irqs(struct cxl_context *ctx)
hwirq = ctx->irqs.offset[r];
for (i = 0; i < ctx->irqs.range[r]; hwirq++, i++) {
virq = irq_find_mapping(NULL, hwirq);
+ irq_set_status_flags(virq, IRQ_DISABLE_UNLAZY);
disable_irq(virq);
}
}
--
2.7.4
