Commit-ID: c179c9b978b90bdf9cb39f5b5716dede157f1eaf Gitweb: http://git.kernel.org/tip/c179c9b978b90bdf9cb39f5b5716dede157f1eaf Author: Jiang Liu <[email protected]> AuthorDate: Thu, 9 Jul 2015 16:00:36 +0800 Committer: Thomas Gleixner <[email protected]> CommitDate: Wed, 22 Jul 2015 18:37:42 +0200
PCI: Add helper function msi_desc_to_pci_sysdata() Add helper function msi_desc_to_pci_sysdata() to retrieve sysdata from an MSI descriptor. To avoid pulling include/linux/pci.h into include/linux/msi.h, msi_desc_to_pci_sysdata() is implemented as a normal function instead of an inline function. Signed-off-by: Jiang Liu <[email protected]> Reviewed-by: Yijing Wang <[email protected]> Acked-by: Bjorn Helgaas <[email protected]> Cc: Tony Luck <[email protected]> Cc: [email protected] Cc: Grant Likely <[email protected]> Cc: Marc Zyngier <[email protected]> Cc: Stuart Yoder <[email protected]> Cc: Borislav Petkov <[email protected]> Cc: Alexander Gordeev <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> --- drivers/pci/msi.c | 8 ++++++++ include/linux/msi.h | 7 +++++++ 2 files changed, 15 insertions(+) diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 157eb88..ab41742 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -1137,6 +1137,14 @@ int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, } EXPORT_SYMBOL(pci_enable_msix_range); +void *msi_desc_to_pci_sysdata(struct msi_desc *desc) +{ + struct pci_dev *dev = msi_desc_to_pci_dev(desc); + + return dev->bus->sysdata; +} +EXPORT_SYMBOL_GPL(msi_desc_to_pci_sysdata); + #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN /** * pci_msi_domain_write_msg - Helper to write MSI message to PCI config space diff --git a/include/linux/msi.h b/include/linux/msi.h index 8ac4a68..cfbd2af 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -60,6 +60,13 @@ static inline struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc) { return desc->dev; } + +void *msi_desc_to_pci_sysdata(struct msi_desc *desc); +#else /* CONFIG_PCI_MSI */ +static inline void *msi_desc_to_pci_sysdata(struct msi_desc *desc) +{ + return NULL; +} #endif /* CONFIG_PCI_MSI */ void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); -- 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/
