diff options
| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2013-04-02 15:33:36 +0200 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2013-04-03 11:42:48 -0500 |
| commit | 58631ad1205677c5b33f511fd5aae26eaa0c87c6 (patch) | |
| tree | da2855368389e78abed99744ac2c4ca23ea138dc | |
| parent | a3ec3acd29e3b372d79b81a534e1f4b10fc140f7 (diff) | |
| download | lwn-58631ad1205677c5b33f511fd5aae26eaa0c87c6.tar.gz lwn-58631ad1205677c5b33f511fd5aae26eaa0c87c6.zip | |
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: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
| -rw-r--r-- | arch/powerpc/sysdev/fsl_msi.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/sysdev/fsl_msi.c b/arch/powerpc/sysdev/fsl_msi.c index 178c99427b1c..ab02db3d02d8 100644 --- a/arch/powerpc/sysdev/fsl_msi.c +++ b/arch/powerpc/sysdev/fsl_msi.c @@ -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; |