Commit 86ca6226 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

bus: fsl-mc-msi: Allocate MSI device data on first use 



Allocate the MSI device data on first invocation of the allocation function.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.867985931@linutronix.de
parent 077aeadb

drivers/bus/fsl-mc/fsl-mc-msi.c

+8 −6
Original line number Diff line number Diff line
@@ -253,6 +253,14 @@ int fsl_mc_msi_domain_alloc_irqs(struct device *dev, 
	struct irq_domain *msi_domain;

	int error;



	msi_domain = dev_get_msi_domain(dev);

	if (!msi_domain)

		return -EINVAL;



	error = msi_setup_device_data(dev);

	if (error)

		return error;



	if (!list_empty(dev_to_msi_list(dev)))

		return -EINVAL;
@@ -260,12 +268,6 @@ int fsl_mc_msi_domain_alloc_irqs(struct device *dev, 
	if (error < 0)

		return error;



	msi_domain = dev_get_msi_domain(dev);

	if (!msi_domain) {

		error = -EINVAL;

		goto cleanup_msi_descs;

	}



	/*

	 * NOTE: Calling this function will trigger the invocation of the

	 * its_fsl_mc_msi_prepare() callback