From 94688cf2454986309fbcd495233ba2423786a14a Mon Sep 17 00:00:00 2001 From: Linas Vepstas Date: Wed, 7 Nov 2007 15:43:59 -0600 Subject: PCI: export pci_restore_msi_state() PCI error recovery usually involves the PCI adapter being reset. If the device is using MSI, the reset will cause the MSI state to be lost; the device driver needs to restore the MSI state. The pci_restore_msi_state() routine is currently protected by CONFIG_PM; remove this, and also export the symbol, so that it can be used in a modle. Signed-off-by: Linas Vepstas Signed-off-by: Greg Kroah-Hartman --- drivers/pci/msi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/pci/msi.c') diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 07c9f09c856..30de51fcd68 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -230,7 +230,6 @@ static void pci_intx_for_msi(struct pci_dev *dev, int enable) pci_intx(dev, enable); } -#ifdef CONFIG_PM static void __pci_restore_msi_state(struct pci_dev *dev) { int pos; @@ -288,7 +287,7 @@ void pci_restore_msi_state(struct pci_dev *dev) __pci_restore_msi_state(dev); __pci_restore_msix_state(dev); } -#endif /* CONFIG_PM */ +EXPORT_SYMBOL_GPL(pci_restore_msi_state); /** * msi_capability_init - configure device's MSI capability structure -- cgit v1.2.3-18-g5258 From 6a9e7f203187e22e96588fa0156b2652841196bf Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Tue, 11 Dec 2007 23:19:41 +0100 Subject: PCI: drivers/pci/msi.c: move arch hooks to the top This patch fixes the following problem present with older gcc versions: <-- snip --> ... CC drivers/pci/msi.o /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/pci/msi.c:692: warning: weak declaration of `arch_msi_check_device' after first use results in unspecified behavior /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/pci/msi.c:704: warning: weak declaration of `arch_setup_msi_irqs' after first use results in unspecified behavior /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/pci/msi.c:724: warning: weak declaration of `arch_teardown_msi_irqs' after first use results in unspecified behavior ... <-- snip --> Signed-off-by: Adrian Bunk Signed-off-by: Greg Kroah-Hartman --- drivers/pci/msi.c | 91 +++++++++++++++++++++++++++---------------------------- 1 file changed, 45 insertions(+), 46 deletions(-) (limited to 'drivers/pci/msi.c') diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 30de51fcd68..26938da8f43 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -25,6 +25,51 @@ static int pci_msi_enable = 1; +/* Arch hooks */ + +int __attribute__ ((weak)) +arch_msi_check_device(struct pci_dev *dev, int nvec, int type) +{ + return 0; +} + +int __attribute__ ((weak)) +arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry) +{ + return 0; +} + +int __attribute__ ((weak)) +arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) +{ + struct msi_desc *entry; + int ret; + + list_for_each_entry(entry, &dev->msi_list, list) { + ret = arch_setup_msi_irq(dev, entry); + if (ret) + return ret; + } + + return 0; +} + +void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq) +{ + return; +} + +void __attribute__ ((weak)) +arch_teardown_msi_irqs(struct pci_dev *dev) +{ + struct msi_desc *entry; + + list_for_each_entry(entry, &dev->msi_list, list) { + if (entry->irq != 0) + arch_teardown_msi_irq(entry->irq); + } +} + static void msi_set_enable(struct pci_dev *dev, int enable) { int pos; @@ -682,49 +727,3 @@ void pci_msi_init_pci_dev(struct pci_dev *dev) { INIT_LIST_HEAD(&dev->msi_list); } - - -/* Arch hooks */ - -int __attribute__ ((weak)) -arch_msi_check_device(struct pci_dev* dev, int nvec, int type) -{ - return 0; -} - -int __attribute__ ((weak)) -arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *entry) -{ - return 0; -} - -int __attribute__ ((weak)) -arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type) -{ - struct msi_desc *entry; - int ret; - - list_for_each_entry(entry, &dev->msi_list, list) { - ret = arch_setup_msi_irq(dev, entry); - if (ret) - return ret; - } - - return 0; -} - -void __attribute__ ((weak)) arch_teardown_msi_irq(unsigned int irq) -{ - return; -} - -void __attribute__ ((weak)) -arch_teardown_msi_irqs(struct pci_dev *dev) -{ - struct msi_desc *entry; - - list_for_each_entry(entry, &dev->msi_list, list) { - if (entry->irq != 0) - arch_teardown_msi_irq(entry->irq); - } -} -- cgit v1.2.3-18-g5258