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| author | Michael Ellerman <michael@ellerman.id.au> | 2007-03-22 21:51:33 +1100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-05-02 19:02:36 -0700 |
| commit | fc4afc7b2bdd81e2dbded5a8222676d3161758d3 (patch) | |
| tree | f746cc18be366058a764e6cc3c3625efbfbb5765 /drivers/pci | |
| parent | 00ba16ab2658afe11d4fdcaf16a331292c44bee6 (diff) | |
| download | linux-rpi3-fc4afc7b2bdd81e2dbded5a8222676d3161758d3.tar.gz linux-rpi3-fc4afc7b2bdd81e2dbded5a8222676d3161758d3.tar.bz2 linux-rpi3-fc4afc7b2bdd81e2dbded5a8222676d3161758d3.zip | |
MSI: Consolidate MSI-X irq freeing code
For the MSI-X case we do exactly the same logic in pci_disable_msix() and
msi_remove_pci_irq_vectors(), so consolidate them.
msi_remove_pci_irq_vectors() wasn't setting dev->first_msi_irq to 0, but
I think it should have been, so the consolidated version does.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Acked-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/msi.c | 49 |
1 files changed, 20 insertions, 29 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 91fed543fc84..4f326f38f9bf 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -674,10 +674,26 @@ int pci_enable_msix(struct pci_dev* dev, struct msix_entry *entries, int nvec) return status; } -void pci_disable_msix(struct pci_dev* dev) +static void msix_free_all_irqs(struct pci_dev *dev) { int irq, head, tail = 0; + irq = head = dev->first_msi_irq; + while (head != tail) { + tail = get_irq_msi(irq)->link.tail; + + BUG_ON(irq_has_action(irq)); + + if (irq != head) + msi_free_irq(dev, irq); + irq = tail; + } + msi_free_irq(dev, irq); + dev->first_msi_irq = 0; +} + +void pci_disable_msix(struct pci_dev* dev) +{ if (!pci_msi_enable) return; if (!dev) @@ -690,18 +706,7 @@ void pci_disable_msix(struct pci_dev* dev) pci_intx(dev, 1); /* enable intx */ dev->msix_enabled = 0; - irq = head = dev->first_msi_irq; - while (head != tail) { - tail = get_irq_msi(irq)->link.tail; - - BUG_ON(irq_has_action(irq)); - - if (irq != head) /* Release MSI-X irq */ - msi_free_irq(dev, irq); - irq = tail; - } - msi_free_irq(dev, irq); - dev->first_msi_irq = 0; + msix_free_all_irqs(dev); } /** @@ -722,23 +727,9 @@ void msi_remove_pci_irq_vectors(struct pci_dev* dev) BUG_ON(irq_has_action(dev->first_msi_irq)); msi_free_irq(dev, dev->first_msi_irq); } - if (dev->msix_enabled) { - int irq, head, tail = 0; - void __iomem *base = NULL; - irq = head = dev->first_msi_irq; - while (head != tail) { - tail = get_irq_msi(irq)->link.tail; - base = get_irq_msi(irq)->mask_base; - - BUG_ON(irq_has_action(irq)); - - if (irq != head) /* Release MSI-X irq */ - msi_free_irq(dev, irq); - irq = tail; - } - msi_free_irq(dev, irq); - } + if (dev->msix_enabled) + msix_free_all_irqs(dev); } void pci_no_msi(void) |