Currently we create and populate ->msi_kset while allocating irqs in populate_msi_sysfs(), however if it fails and/or we want to free the entries - we don't always remove it, and we might have problems if we've failed to allocate irqs and try it again.
To fix that, move the unregister part to free_msi_irqs() and remove already existing ones. Also, verify if it was actually created - we don't always call free_msi_irqs() after populate_msi_sysfs(). CC: Bjorn Helgaas <[email protected]> CC: Neil Horman <[email protected]> CC: Greg Kroah-Hartman <[email protected]> CC: [email protected] CC: [email protected] Signed-off-by: Veaceslav Falico <[email protected]> --- Notes: v1 -> v2: Verify if the kset was actually register before unregistering. drivers/pci/msi.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 0771508..dafda2b 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -391,6 +391,11 @@ static void free_msi_irqs(struct pci_dev *dev) kfree(entry); } } + + if (dev->msi_kset) { + kset_unregister(dev->msi_kset); + dev->msi_kset = NULL; + } } static struct msi_desc *alloc_msi_entry(struct pci_dev *dev) @@ -904,8 +909,6 @@ void pci_disable_msi(struct pci_dev *dev) pci_msi_shutdown(dev); free_msi_irqs(dev); - kset_unregister(dev->msi_kset); - dev->msi_kset = NULL; } EXPORT_SYMBOL(pci_disable_msi); @@ -1002,8 +1005,6 @@ void pci_disable_msix(struct pci_dev *dev) pci_msix_shutdown(dev); free_msi_irqs(dev); - kset_unregister(dev->msi_kset); - dev->msi_kset = NULL; } EXPORT_SYMBOL(pci_disable_msix); -- 1.8.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
