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author | Abhijeet Dharmapurikar <adharmap@codeaurora.org> | 2017-05-10 19:55:36 +0530 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-03 19:05:47 +0900 |
commit | f6dda8e2e8479f3a71c88d6a21fe98d0fa7e0e31 (patch) | |
tree | f2293bc34ae341feaeedbde780380a4bd3c56075 /drivers | |
parent | 6bc546e71e50b8dd49130033f066676504c29b0c (diff) | |
download | linux-stable-f6dda8e2e8479f3a71c88d6a21fe98d0fa7e0e31.tar.gz linux-stable-f6dda8e2e8479f3a71c88d6a21fe98d0fa7e0e31.tar.bz2 linux-stable-f6dda8e2e8479f3a71c88d6a21fe98d0fa7e0e31.zip |
spmi: pmic-arb: fix missing interrupts
irq_enable is called when the device resumes. Note that the
irq_enable is called regardless of whether the interrupt was
marked enabled/disabled in the descriptor or whether it was
masked/unmasked at the controller while resuming.
The current driver unconditionally clears the interrupt in its
irq_enable callback. This is dangerous as any interrupts that
happen right before the resume could be missed.
Remove the irq_enable callback and use mask/unmask instead.
Also remove struct pmic_arb_irq_spec as it serves no real purpose.
It is used only in the translate function and the code is much
cleaner without it.
Signed-off-by: Abhijeet Dharmapurikar <adharmap@codeaurora.org>
Signed-off-by: Kiran Gunda <kgunda@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/spmi/spmi-pmic-arb.c | 29 |
1 files changed, 3 insertions, 26 deletions
diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c index 0a5728cab184..bc0373720198 100644 --- a/drivers/spmi/spmi-pmic-arb.c +++ b/drivers/spmi/spmi-pmic-arb.c @@ -588,17 +588,6 @@ static void qpnpint_irq_unmask(struct irq_data *d) qpnpint_spmi_write(d, QPNPINT_REG_EN_CLR, &data, 1); } -static void qpnpint_irq_enable(struct irq_data *d) -{ - u8 irq = d->hwirq >> 8; - u8 data; - - qpnpint_irq_unmask(d); - - data = BIT(irq); - qpnpint_spmi_write(d, QPNPINT_REG_LATCHED_CLR, &data, 1); -} - static int qpnpint_irq_set_type(struct irq_data *d, unsigned int flow_type) { struct spmi_pmic_arb_qpnpint_type type; @@ -647,7 +636,6 @@ static int qpnpint_get_irqchip_state(struct irq_data *d, static struct irq_chip pmic_arb_irqchip = { .name = "pmic_arb", - .irq_enable = qpnpint_irq_enable, .irq_ack = qpnpint_irq_ack, .irq_mask = qpnpint_irq_mask, .irq_unmask = qpnpint_irq_unmask, @@ -657,12 +645,6 @@ static struct irq_chip pmic_arb_irqchip = { | IRQCHIP_SKIP_SET_WAKE, }; -struct spmi_pmic_arb_irq_spec { - unsigned slave:4; - unsigned per:8; - unsigned irq:3; -}; - static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, struct device_node *controller, const u32 *intspec, @@ -671,7 +653,6 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, unsigned int *out_type) { struct spmi_pmic_arb *pa = d->host_data; - struct spmi_pmic_arb_irq_spec spec; int rc; u8 apid; @@ -686,10 +667,6 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, if (intspec[0] > 0xF || intspec[1] > 0xFF || intspec[2] > 0x7) return -EINVAL; - spec.slave = intspec[0]; - spec.per = intspec[1]; - spec.irq = intspec[2]; - rc = pa->ver_ops->ppid_to_apid(pa, intspec[0], (intspec[1] << 8), &apid); if (rc < 0) { @@ -705,9 +682,9 @@ static int qpnpint_irq_domain_dt_translate(struct irq_domain *d, if (apid < pa->min_apid) pa->min_apid = apid; - *out_hwirq = spec.slave << 24 - | spec.per << 16 - | spec.irq << 8 + *out_hwirq = (intspec[0] & 0xF) << 24 + | (intspec[1] & 0xFF) << 16 + | (intspec[2] & 0x7) << 8 | apid; *out_type = intspec[3] & IRQ_TYPE_SENSE_MASK; |