diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spmi/spmi-pmic-arb.c | 14 |
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) |