Commit c179c9b9 authored by Jiang Liu's avatar Jiang Liu Committed by Thomas Gleixner

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: default avatarJiang Liu <jiang.liu@linux.intel.com>
Reviewed-by: default avatarYijing Wang <wangyijing@huawei.com>
Acked-by: default avatarBjorn 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.comSigned-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent faca10b9
...@@ -1137,6 +1137,14 @@ int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries, ...@@ -1137,6 +1137,14 @@ int pci_enable_msix_range(struct pci_dev *dev, struct msix_entry *entries,
} }
EXPORT_SYMBOL(pci_enable_msix_range); 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 #ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
/** /**
* pci_msi_domain_write_msg - Helper to write MSI message to PCI config space * pci_msi_domain_write_msg - Helper to write MSI message to PCI config space
......
...@@ -60,6 +60,13 @@ static inline struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc) ...@@ -60,6 +60,13 @@ static inline struct pci_dev *msi_desc_to_pci_dev(struct msi_desc *desc)
{ {
return desc->dev; 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 */ #endif /* CONFIG_PCI_MSI */
void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg); void __pci_read_msi_msg(struct msi_desc *entry, struct msi_msg *msg);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment