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Diffstat (limited to 'drivers/spmi/spmi-pmic-arb.c')
-rw-r--r--drivers/spmi/spmi-pmic-arb.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index bc0373720198..1d23df09bad8 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -580,12 +580,22 @@ static void qpnpint_irq_unmask(struct irq_data *d)
struct spmi_pmic_arb *pa = irq_data_get_irq_chip_data(d);
u8 irq = d->hwirq >> 8;
u8 apid = d->hwirq;
- u8 data = BIT(irq);
+ u8 buf[2];
writel_relaxed(SPMI_PIC_ACC_ENABLE_BIT,
pa->intr + pa->ver_ops->acc_enable(apid));
- qpnpint_spmi_write(d, QPNPINT_REG_EN_CLR, &data, 1);
+ qpnpint_spmi_read(d, QPNPINT_REG_EN_SET, &buf[0], 1);
+ if (!(buf[0] & BIT(irq))) {
+ /*
+ * Since the interrupt is currently disabled, write to both the
+ * LATCHED_CLR and EN_SET registers so that a spurious interrupt
+ * cannot be triggered when the interrupt is enabled
+ */
+ buf[0] = BIT(irq);
+ buf[1] = BIT(irq);
+ qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &buf, 2);
+ }
}
static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type)