syscore: Pass context data to callbacks

Several drivers can benefit from registering per-instance data along
with the syscore operations. To achieve this, move the modifiable fields
out of the syscore_ops structure and into a separate struct syscore that
can be registered with the framework. Add a void * driver data field for
drivers to store contextual data that will be passed to the syscore ops.

Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 8 insertions, 4 deletions

diff --git a/drivers/irqchip/irq-mchp-eic.c b/drivers/irqchip/irq-mchp-eic.c
index 516a3a0e359c..be83e6e422c3 100644
--- a/drivers/irqchip/irq-mchp-eic.c
+++ b/drivers/irqchip/irq-mchp-eic.c
@@ -109,7 +109,7 @@ static int mchp_eic_irq_set_wake(struct irq_data *d, unsigned int on)
 	return 0;
 }
 
-static int mchp_eic_irq_suspend(void)
+static int mchp_eic_irq_suspend(void *data)
 {
 	unsigned int hwirq;
 
@@ -123,7 +123,7 @@ static int mchp_eic_irq_suspend(void)
 	return 0;
 }
 
-static void mchp_eic_irq_resume(void)
+static void mchp_eic_irq_resume(void *data)
 {
 	unsigned int hwirq;
 
@@ -135,11 +135,15 @@ static void mchp_eic_irq_resume(void)
 			       MCHP_EIC_SCFG(hwirq));
 }
 
-static struct syscore_ops mchp_eic_syscore_ops = {
+static const struct syscore_ops mchp_eic_syscore_ops = {
 	.suspend = mchp_eic_irq_suspend,
 	.resume = mchp_eic_irq_resume,
 };
 
+static struct syscore mchp_eic_syscore = {
+	.ops = &mchp_eic_syscore_ops,
+};
+
 static struct irq_chip mchp_eic_chip = {
 	.name		= "eic",
 	.flags		= IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SET_TYPE_MASKED,
@@ -257,7 +261,7 @@ static int mchp_eic_init(struct device_node *node, struct device_node *parent)
 		goto clk_unprepare;
 	}
 
-	register_syscore_ops(&mchp_eic_syscore_ops);
+	register_syscore(&mchp_eic_syscore);
 
 	pr_info("%pOF: EIC registered, nr_irqs %u\n", node, MCHP_EIC_NIRQ);