[patch 11/37] genirq/msi: Remove the original sysfs interfaces

Thomas Gleixner
2021-11-27T01:48:43Z

No more users. Refactor the core code accordingly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/msi.h | 12 -----------
kernel/irq/msi.c | 53 +++++++++++++++++++---------------------------------
2 files changed, 20 insertions(+), 45 deletions(-)

--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -246,21 +246,9 @@ void pci_msi_unmask_irq(struct irq_data
#ifdef CONFIG_SYSFS
int msi_device_populate_sysfs(struct device *dev);
void msi_device_destroy_sysfs(struct device *dev);
-
-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 int msi_device_populate_sysfs(struct device *dev) { return 0; }
static inline void msi_device_destroy_sysfs(struct device *dev) { }
-
-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

/*
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -132,12 +132,8 @@ static ssize_t msi_mode_show(struct devi
/**
* msi_populate_sysfs - Populate msi_irqs sysfs entries for devices
* @dev: The device(PCI, platform etc) who will get sysfs entries
- *
- * Return attribute_group ** so that specific bus MSI can save it to
- * somewhere during initilizing msi irqs. If devices has no MSI irq,
- * return NULL; if it fails to populate sysfs, return ERR_PTR
*/
-const struct attribute_group **msi_populate_sysfs(struct device *dev)
+static const struct attribute_group **msi_populate_sysfs(struct device *dev)
{
const struct attribute_group **msi_irq_groups;
struct attribute **msi_attrs, *msi_attr;
@@ -228,41 +224,32 @@ int msi_device_populate_sysfs(struct dev
}

/**
- * msi_destroy_sysfs - Destroy msi_irqs sysfs entries for devices
- * @dev: The device(PCI, platform etc) who will remove sysfs entries
- * @msi_irq_groups: attribute_group for device msi_irqs entries
- */
-void msi_destroy_sysfs(struct device *dev, const struct attribute_group **msi_irq_groups)
-{
- struct device_attribute *dev_attr;
- struct attribute **msi_attrs;
- int count = 0;
-
- if (msi_irq_groups) {
- sysfs_remove_groups(&dev->kobj, msi_irq_groups);
- msi_attrs = msi_irq_groups[0]->attrs;
- while (msi_attrs[count]) {
- dev_attr = container_of(msi_attrs[count],
- struct device_attribute, attr);
- kfree(dev_attr->attr.name);
- kfree(dev_attr);
- ++count;
- }
- kfree(msi_attrs);
- kfree(msi_irq_groups[0]);
- kfree(msi_irq_groups);
- }
-}
-
-/**
* msi_device_destroy_sysfs - Destroy msi_irqs sysfs entries for a device
* @dev: The device(PCI, platform etc) for which to remove
* sysfs entries
*/
void msi_device_destroy_sysfs(struct device *dev)
{
- msi_destroy_sysfs(dev, dev->msi.data->attrs);
+ const struct attribute_group **msi_irq_groups = dev->msi.data->attrs;
+ struct device_attribute *dev_attr;
+ struct attribute **msi_attrs;
+ int count = 0;
+
dev->msi.data->attrs = NULL;
+ if (!msi_irq_groups)
+ return;
+
+ sysfs_remove_groups(&dev->kobj, msi_irq_groups);
+ msi_attrs = msi_irq_groups[0]->attrs;
+ while (msi_attrs[count]) {
+ dev_attr = container_of(msi_attrs[count], struct device_attribute, attr);
+ kfree(dev_attr->attr.name);
+ kfree(dev_attr);
+ ++count;
+ }
+ kfree(msi_attrs);
+ kfree(msi_irq_groups[0]);
+ kfree(msi_irq_groups);
}
#endif