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PCI MSI: Unify msi_free_irqs() and msix_free_all_irqs() 

Unify msi_free_irqs() and msix_free_all_irqs(), and rename it to a
common void function free_msi_irqs().

And relocate the common function to where the prototype is located now.

Reviewed-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Hidetoshi Seto 2009-08-06 11:32:51 +09:00 committed by Jesse Barnes
parent 9cc8d54815
commit f56e448132
1 changed files with 31 additions and 43 deletions
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74
drivers/pci/msi.c
View File

@ -272,7 +272,30 @@ void write_msi_msg(unsigned int irq, struct msi_msg *msg)
write_msi_msg_desc(desc, msg);
}
static int msi_free_irqs(struct pci_dev* dev);
static void free_msi_irqs(struct pci_dev *dev)
{
struct msi_desc *entry, *tmp;
list_for_each_entry(entry, &dev->msi_list, list) {
int i, nvec;
if (!entry->irq)
continue;
nvec = 1 << entry->msi_attrib.multiple;
for (i = 0; i < nvec; i++)
BUG_ON(irq_has_action(entry->irq + i));
}
arch_teardown_msi_irqs(dev);
list_for_each_entry_safe(entry, tmp, &dev->msi_list, list) {
if (entry->msi_attrib.is_msix) {
if (list_is_last(&entry->list, &dev->msi_list))
iounmap(entry->mask_base);
}
list_del(&entry->list);
kfree(entry);
}
}
static struct msi_desc *alloc_msi_entry(struct pci_dev *dev)
{
@ -396,7 +419,7 @@ static int msi_capability_init(struct pci_dev *dev, int nvec)
ret = arch_setup_msi_irqs(dev, nvec, PCI_CAP_ID_MSI);
if (ret) {
msi_mask_irq(entry, mask, ~mask);
msi_free_irqs(dev);
free_msi_irqs(dev);
return ret;
}
@ -454,7 +477,7 @@ static int msix_capability_init(struct pci_dev *dev,
if (!i)
iounmap(base);
else
msi_free_irqs(dev);
free_msi_irqs(dev);
/* No enough memory. Don't try again */
return -ENOMEM;
}
@ -486,7 +509,7 @@ static int msix_capability_init(struct pci_dev *dev,
}
if (ret) {
msi_free_irqs(dev);
free_msi_irqs(dev);
return ret;
}
@ -644,37 +667,10 @@ void pci_disable_msi(struct pci_dev* dev)
return;
pci_msi_shutdown(dev);
msi_free_irqs(dev);
free_msi_irqs(dev);
}
EXPORT_SYMBOL(pci_disable_msi);
static int msi_free_irqs(struct pci_dev* dev)
{
struct msi_desc *entry, *tmp;
list_for_each_entry(entry, &dev->msi_list, list) {
int i, nvec;
if (!entry->irq)
continue;
nvec = 1 << entry->msi_attrib.multiple;
for (i = 0; i < nvec; i++)
BUG_ON(irq_has_action(entry->irq + i));
}
arch_teardown_msi_irqs(dev);
list_for_each_entry_safe(entry, tmp, &dev->msi_list, list) {
if (entry->msi_attrib.is_msix) {
if (list_is_last(&entry->list, &dev->msi_list))
iounmap(entry->mask_base);
}
list_del(&entry->list);
kfree(entry);
}
return 0;
}
/**
* pci_msix_table_size - return the number of device's MSI-X table entries
* @dev: pointer to the pci_dev data structure of MSI-X device function
@ -745,11 +741,6 @@ int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec)
}
EXPORT_SYMBOL(pci_enable_msix);
static void msix_free_all_irqs(struct pci_dev *dev)
{
msi_free_irqs(dev);
}
void pci_msix_shutdown(struct pci_dev* dev)
{
struct msi_desc *entry;
@ -774,7 +765,7 @@ void pci_disable_msix(struct pci_dev* dev)
return;
pci_msix_shutdown(dev);
msix_free_all_irqs(dev);
free_msi_irqs(dev);
}
EXPORT_SYMBOL(pci_disable_msix);
@ -792,11 +783,8 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev)
if (!pci_msi_enable || !dev)
return;
if (dev->msi_enabled)
msi_free_irqs(dev);
if (dev->msix_enabled)
msix_free_all_irqs(dev);
if (dev->msi_enabled || dev->msix_enabled)
free_msi_irqs(dev);
}
void pci_no_msi(void)