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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2015-07-09 11:00:36 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-07-22 19:37:42 +0300 |
| commit | c179c9b978b90bdf9cb39f5b5716dede157f1eaf (patch) | |
| tree | 747a85c02a9fd9c4ac9cb33608af8c3f88e2476c | |
| parent | faca10b9e63e880c81388fbbedf7ede6dcd77c70 (diff) | |
| download | linux-c179c9b978b90bdf9cb39f5b5716dede157f1eaf.tar.xz | |
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 <jiang.liu@linux.intel.com>
Reviewed-by: Yijing Wang <wangyijing@huawei.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Stuart Yoder <stuart.yoder@freescale.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Alexander Gordeev <agordeev@redhat.com>
Link: http://lkml.kernel.org/r/1436428847-8886-2-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | drivers/pci/msi.c | 8 | ||||
| -rw-r--r-- | include/linux/msi.h | 7 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 157eb8817fb8..ab4174243962 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 8ac4a68ffae2..cfbd2afeaf64 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); |