Commit 1197528a authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

genirq/msi: Guard sysfs code 



No point in building unused code when CONFIG_SYSFS=n.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Tested-by: default avatarJuergen Gross <jgross@suse.com>
Reviewed-by: default avatarJason Gunthorpe <jgg@nvidia.com>
Reviewed-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20211206210223.985907940@linutronix.de
parent 29bbc35e

include/linux/msi.h

+10 −0
Original line number Diff line number Diff line
@@ -239,9 +239,19 @@ void __pci_write_msi_msg(struct msi_desc *entry, struct msi_msg *msg); 
void pci_msi_mask_irq(struct irq_data *data);

void pci_msi_unmask_irq(struct irq_data *data);



#ifdef CONFIG_SYSFS

const struct attribute_group **msi_populate_sysfs(struct device *dev);

void msi_destroy_sysfs(struct device *dev,

		       const struct attribute_group **msi_irq_groups);

#else

static inline const struct attribute_group **msi_populate_sysfs(struct device *dev)

{

	return NULL;

}

static inline void msi_destroy_sysfs(struct device *dev, const struct attribute_group **msi_irq_groups)

{

}

#endif



/*

 * The arch hooks to setup up msi irqs. Default functions are implemented

kernel/irq/msi.c

+2 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ void get_cached_msi_msg(unsigned int irq, struct msi_msg *msg) 
}

EXPORT_SYMBOL_GPL(get_cached_msi_msg);



#ifdef CONFIG_SYSFS

static ssize_t msi_mode_show(struct device *dev, struct device_attribute *attr,

			     char *buf)

{
@@ -204,6 +205,7 @@ void msi_destroy_sysfs(struct device *dev, const struct attribute_group **msi_ir 
		kfree(msi_irq_groups);

	}

}

#endif



#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN

static inline void irq_chip_write_msi_msg(struct irq_data *data,