[patch 10/10] genirq/msi: Rename msi_[un]lock_descs()

Thomas Gleixner
2025-03-09T08:42:00Z

Now that all abuse is gone and the legit users are converted to
guard(msi_descs_lock), rename the lock functions and document them as
internal.

No functional chance.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
include/linux/msi.h | 8 ++++----
kernel/irq/msi.c | 16 ++++++++++------
2 files changed, 14 insertions(+), 10 deletions(-)

--- a/include/linux/msi.h
+++ b/include/linux/msi.h
@@ -224,11 +224,11 @@ struct msi_dev_domain {

int msi_setup_device_data(struct device *dev);

-void msi_lock_descs(struct device *dev);
-void msi_unlock_descs(struct device *dev);
+void __msi_lock_descs(struct device *dev);
+void __msi_unlock_descs(struct device *dev);

-DEFINE_LOCK_GUARD_1(msi_descs_lock, struct device, msi_lock_descs(_T->lock),
- msi_unlock_descs(_T->lock));
+DEFINE_LOCK_GUARD_1(msi_descs_lock, struct device, __msi_lock_descs(_T->lock),
+ __msi_unlock_descs(_T->lock));

struct msi_desc *msi_domain_first_desc(struct device *dev, unsigned int domid,
enum msi_desc_filter filter);
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -337,26 +337,30 @@ int msi_setup_device_data(struct device
}

/**
- * msi_lock_descs - Lock the MSI descriptor storage of a device
+ * __msi_lock_descs - Lock the MSI descriptor storage of a device
* @dev: Device to operate on
+ *
+ * Internal function for guard(msi_descs_lock). Don't use in code.
*/
-void msi_lock_descs(struct device *dev)
+void __msi_lock_descs(struct device *dev)
{
mutex_lock(&dev->msi.data->mutex);
}
-EXPORT_SYMBOL_GPL(msi_lock_descs);
+EXPORT_SYMBOL_GPL(__msi_lock_descs);

/**
- * msi_unlock_descs - Unlock the MSI descriptor storage of a device
+ * __msi_unlock_descs - Unlock the MSI descriptor storage of a device
* @dev: Device to operate on
+ *
+ * Internal function for guard(msi_descs_lock). Don't use in code.
*/
-void msi_unlock_descs(struct device *dev)
+void __msi_unlock_descs(struct device *dev)
{
/* Invalidate the index which was cached by the iterator */
dev->msi.data->__iter_idx = MSI_XA_MAX_INDEX;
mutex_unlock(&dev->msi.data->mutex);
}
-EXPORT_SYMBOL_GPL(msi_unlock_descs);
+EXPORT_SYMBOL_GPL(__msi_unlock_descs);

static struct msi_desc *msi_find_desc(struct msi_device_data *md, unsigned int domid,
enum msi_desc_filter filter)