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| author | Niklas Neronin <[email protected]> | 2023-12-01 15:06:44 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2023-12-04 06:50:40 +0000 |
| commit | 9831960df237855ea3333e08c26cc9405a7ed440 (patch) | |
| tree | b4342cb8da2916f9f029b95dc1c1eb122979c495 /drivers/usb/cdns3/cdnsp-debug.h | |
| parent | xhci: change 'msix_count' to encompass MSI or MSI-X vectors (diff) | |
| download | kernel-9831960df237855ea3333e08c26cc9405a7ed440.tar.gz kernel-9831960df237855ea3333e08c26cc9405a7ed440.zip | |
xhci: rework 'xhci_try_enable_msi()' MSI and MSI-X setup code
Simplify 'xhci_try_enable_msi()' and reduce unnecessary function calls.
xHCI driver first tries to allocate 'num_online_cpu()' number of MSI-X
vectors, if that fails it falls back to a single MSI vector. There is no
good reason for this, we currently only support a primary interrupter.
However, we are still interested in knowing if there are more vectors
available, which will be utilized once we get secondary interrupter
support.
Call 'pci_alloc_irq_vectors()' once (with MSI-X and MSI flag), instead
of separately for MSI-X and MSI. And accept any number of MSI-X or MSI
vectors between 1 and 'num_online_cpu()'.
Signed-off-by: Niklas Neronin <[email protected]>
Signed-off-by: Mathias Nyman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/cdnsp-debug.h')
0 files changed, 0 insertions, 0 deletions