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Commit 58631ad1 authored by Sebastian Andrzej Siewior's avatar Sebastian Andrzej Siewior Committed by Kumar Gala
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powerpc/fsl-msi: use a different lockclass for the cascade interrupt 



lockdep thinks that it might deadlock because it grabs a lock of the
same class while calling the generic_irq_handler(). This annotation will
inform lockdep that it will not.

Signed-off-by: default avatarSebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: default avatarKumar Gala <galak@kernel.crashing.org>
parent a3ec3acd

arch/powerpc/sysdev/fsl_msi.c

+3 −1
Original line number Diff line number Diff line
@@ -333,6 +333,8 @@ static int fsl_of_msi_remove(struct platform_device *ofdev) 
	return 0;

}



static struct lock_class_key fsl_msi_irq_class;



static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev,

			       int offset, int irq_index)

{
@@ -351,7 +353,7 @@ static int fsl_msi_setup_hwirq(struct fsl_msi *msi, struct platform_device *dev, 
		dev_err(&dev->dev, "No memory for MSI cascade data\n");

		return -ENOMEM;

	}



	irq_set_lockdep_class(virt_msir, &fsl_msi_irq_class);

	msi->msi_virqs[irq_index] = virt_msir;

	cascade_data->index = offset;

	cascade_data->msi_data = msi;