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Commit 862de70c authored by Axel Lin's avatar Axel Lin Committed by Samuel Ortiz
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mfd: Make sure to request twl6030 IRQ before using the irq_num 



I was trying to fix the error handling part because in the case of
request_irq failure, it should call kthread_stop instead of free_irq.
But it seems more reasonable to do request_irq before calling kthread_run.

Signed-off-by: default avatarAxel Lin <axel.lin@gmail.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent bd4a40b5

drivers/mfd/twl6030-irq.c

+10 −8
Original line number Diff line number Diff line
@@ -331,12 +331,6 @@ int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) 


	/* install an irq handler to demultiplex the TWL6030 interrupt */

	init_completion(&irq_event);

	task = kthread_run(twl6030_irq_thread, (void *)irq_num, "twl6030-irq");

	if (IS_ERR(task)) {

		pr_err("twl6030: could not create irq %d thread!\n", irq_num);

		status = PTR_ERR(task);

		goto fail_kthread;

	}



	status = request_irq(irq_num, handle_twl6030_pih, IRQF_DISABLED,

				"TWL6030-PIH", &irq_event);
@@ -344,11 +338,19 @@ int twl6030_init_irq(int irq_num, unsigned irq_base, unsigned irq_end) 
		pr_err("twl6030: could not claim irq%d: %d\n", irq_num, status);

		goto fail_irq;

	}



	task = kthread_run(twl6030_irq_thread, (void *)irq_num, "twl6030-irq");

	if (IS_ERR(task)) {

		pr_err("twl6030: could not create irq %d thread!\n", irq_num);

		status = PTR_ERR(task);

		goto fail_kthread;

	}

	return status;

fail_irq:

	free_irq(irq_num, &irq_event);



fail_kthread:

	free_irq(irq_num, &irq_event);



fail_irq:

	for (i = irq_base; i < irq_end; i++)

		irq_set_chip_and_handler(i, NULL, NULL);

	return status;