powernv/opal-dump: Convert to irq domain (8034f715) · Commits · 戴 / test

arch/powerpc/platforms/powernv/opal-dump.c

+17 −39

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@
		#include <linux/vmalloc.h>
		#include <linux/pagemap.h>
		#include <linux/delay.h>
		#include <linux/interrupt.h>

		#include <asm/opal.h>

		@@ -363,7 +364,7 @@ static struct dump_obj *create_dump_obj(uint32_t id, size_t size,
		return dump;
		}

		static int process_dump(void)
		static irqreturn_t process_dump(int irq, void *data)
		{
		int rc;
		uint32_t dump_id, dump_size, dump_type;
		@@ -387,45 +388,13 @@ static int process_dump(void)
		if (!dump)
		return -1;

		return 0;
		}

		static void dump_work_fn(struct work_struct *work)
		{
		process_dump();
		return IRQ_HANDLED;
		}

		static DECLARE_WORK(dump_work, dump_work_fn);

		static void schedule_process_dump(void)
		{
		schedule_work(&dump_work);
		}

		/*
		* New dump available notification
		*
		* Once we get notification, we add sysfs entries for it.
		* We only fetch the dump on demand, and create sysfs asynchronously.
		*/
		static int dump_event(struct notifier_block *nb,
		unsigned long events, void *change)
		{
		if (events & OPAL_EVENT_DUMP_AVAIL)
		schedule_process_dump();

		return 0;
		}

		static struct notifier_block dump_nb = {
		.notifier_call = dump_event,
		.next = NULL,
		.priority = 0
		};

		void __init opal_platform_dump_init(void)
		{
		int rc;
		int dump_irq;

		/* ELOG not supported by firmware */
		if (!opal_check_token(OPAL_DUMP_READ))
		@@ -445,9 +414,18 @@ void __init opal_platform_dump_init(void)
		return;
		}

		rc = opal_notifier_register(&dump_nb);
		dump_irq = opal_event_request(ilog2(OPAL_EVENT_DUMP_AVAIL));
		if (!dump_irq) {
		pr_err("%s: Can't register OPAL event irq (%d)\n",
		__func__, dump_irq);
		return;
		}

		rc = request_threaded_irq(dump_irq, NULL, process_dump,
		IRQF_TRIGGER_HIGH \| IRQF_ONESHOT,
		"opal-dump", NULL);
		if (rc) {
		pr_warn("%s: Can't register OPAL event notifier (%d)\n",
		pr_err("%s: Can't request OPAL event irq (%d)\n",
		__func__, rc);
		return;
		}

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