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yaml
---
r: 263027
b: refs/heads/master
c: 6457d9b
h: refs/heads/master
i:
  263025: d0e3a2d
  263023: cb983c5
v: v3
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Michael Witten committed Aug 2, 2011
1 parent 20acfd6 commit 29206c3
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Showing 2 changed files with 4 additions and 5 deletions.
2 changes: 1 addition & 1 deletion [refs]
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---
refs/heads/master: ed737c1882c652f0b5a888df59895b5dc2d10cd7
refs/heads/master: 6457d9b350b3f4f2098984eee016c6c994b9c096
7 changes: 3 additions & 4 deletions trunk/Documentation/PCI/MSI-HOWTO.txt
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Expand Up @@ -171,7 +171,8 @@ which should be at least 'nvec' entries in size. On success, the
device is switched into MSI-X mode and the function returns 0.
The 'vector' member in each entry is populated with the interrupt number;
the driver should then call request_irq() for each 'vector' that it
decides to use.
decides to use. The device driver is responsible for keeping track of the
interrupts assigned to the MSI-X vectors so it can free them again later.

If this function returns a negative number, it indicates an error and
the driver should not attempt to allocate any more MSI-X interrupts for
Expand All @@ -181,9 +182,7 @@ below.

This function, in contrast with pci_enable_msi(), does not adjust
dev->irq. The device will not generate interrupts for this interrupt
number once MSI-X is enabled. The device driver is responsible for
keeping track of the interrupts assigned to the MSI-X vectors so it can
free them again later.
number once MSI-X is enabled.

Device drivers should normally call this function once per device
during the initialization phase.
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