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| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-12-10 23:19:23 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-12-16 22:16:40 +0100 |
| commit | cf15f43acaad31dabb2646cef170a506a1d663eb (patch) | |
| tree | edf03c996e5ceb82d3523f4494ae581fb7d8107e /include/linux/msi.h | |
| parent | powerpc/pseries/msi: Let core code check for contiguous entries (diff) | |
| download | linux-dev-cf15f43acaad31dabb2646cef170a506a1d663eb.tar.xz linux-dev-cf15f43acaad31dabb2646cef170a506a1d663eb.zip | |
genirq/msi: Provide interface to retrieve Linux interrupt number
This allows drivers to retrieve the Linux interrupt number instead of
fiddling with MSI descriptors.
msi_get_virq() returns the Linux interrupt number or 0 in case that there
is no entry for the given MSI index.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.780824745@linutronix.de
Diffstat (limited to 'include/linux/msi.h')
| -rw-r--r-- | include/linux/msi.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/msi.h b/include/linux/msi.h index d206239e6fa8..7593fc383dba 100644 --- a/include/linux/msi.h +++ b/include/linux/msi.h @@ -153,6 +153,8 @@ struct msi_device_data { int msi_setup_device_data(struct device *dev); +unsigned int msi_get_virq(struct device *dev, unsigned int index); + /* Helpers to hide struct msi_desc implementation details */ #define msi_desc_to_dev(desc) ((desc)->dev) #define dev_to_msi_list(dev) (&(dev)->msi_list) |