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

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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 change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huwei.com>
Link: https://lore.kernel.org/all/20250319105506.864699741@linutronix.de
This commit is contained in:
Thomas Gleixner 2025-03-19 11:57:01 +01:00
parent e46a28cea2
commit 9357e329cd
2 changed files with 14 additions and 10 deletions
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8
include/linux/msi.h
View File

@ -229,11 +229,11 @@ 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);

16
kernel/irq/msi.c
View File

@ -343,26 +343,30 @@ int msi_setup_device_data(struct device *dev)
}
/**
* 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)