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author | Alexander Gordeev <agordeev@redhat.com> | 2013-12-30 08:28:15 +0100 |
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committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-01-03 17:17:55 -0700 |
commit | ff1aa430a2fa43189e89c7ddd559f0bee2298288 (patch) | |
tree | 731237d3f796f92aa31b41a8fda7f0e38c707fbb /Documentation/driver-model | |
parent | 7b92b4f61ec49cb1a5813298f35258bd7ecd3667 (diff) |
PCI/MSI: Add pci_msix_vec_count()
This creates an MSI-X counterpart for pci_msi_vec_count(). Device drivers
can use this function to obtain maximum number of MSI-X interrupts the
device supports and use that number in a subsequent call to
pci_enable_msix().
pci_msix_vec_count() supersedes pci_msix_table_size() and returns a
negative errno if device does not support MSI-X interrupts. After this
update, callers must always check the returned value.
The only user of pci_msix_table_size() was the PCI-Express port driver,
which is also updated by this change.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/driver-model')
0 files changed, 0 insertions, 0 deletions