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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-02-21 00:46:24 +0400 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-02-21 00:46:24 +0400 |
| commit | d158fc7f36a25e19791d25a55da5623399a2644f (patch) | |
| tree | 97549c3779a50a1abfc69f6d1a4f4fa2a6dde214 /drivers/ata/ahci.c | |
| parent | 54dfffde22ee5ac5a6f912eb451b52683ef3ea7f (diff) | |
| parent | fc40363b2140f5777c88e67814fac9327bf1ee68 (diff) | |
| download | linux-d158fc7f36a25e19791d25a55da5623399a2644f.tar.xz | |
Merge tag 'pci-v3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"The most interesting thing here is the change to enable INTx (by
clearing PCI_COMMAND_INTX_DISABLE) if the BIOS left INTx disabled.
Apparently the Baytrail BIOS does this, which means EHCI doesn't work.
Also, fix an AHCI MSI regression and other issues with the recent MSI
changes. This also adds pci_enable_msi_exact() and
pci_enable_msix_exact(), which aren't regression fixes, but will keep
us from touching drivers twice (once to stop using the deprecated
pci_enable_msi(), etc., and again to use the *_exact() variants).
There's also a minor MVEBU fix.
Summary:
MSI:
- Fix AHCI single-MSI fallback (Alexander Gordeev)
- Fix populate_msi_sysfs() error paths (Greg Kroah-Hartman)
- Fix htmldocs problem (Masanari Iida)
- Add pci_enable_msi_exact() and pci_enable_msix_exact() (Alexander Gordeev)
- Update documentation (Alexander Gordeev)
Miscellaneous:
- mvebu: expose device ID & revision via lspci (Andrew Lunn)
- Enable INTx if the BIOS left them disabled (Bjorn Helgaas)"
* tag 'pci-v3.14-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
ahci: Fix broken fallback to single MSI mode
PCI: Enable INTx if BIOS left them disabled
PCI/MSI: Add pci_enable_msi_exact() and pci_enable_msix_exact()
PCI/MSI: Fix cut-and-paste errors in documentation
PCI/MSI: Add pci_enable_msi() documentation back
PCI/MSI: Fix pci_msix_vec_count() htmldocs failure
PCI/MSI: Fix leak of msi_attrs
PCI/MSI: Check kmalloc() return value, fix leak of name
PCI: mvebu: Use Device ID and revision from underlying endpoint
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index 7df81576a489..c81d809c111b 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -1184,8 +1184,10 @@ static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports, nvec = rc; rc = pci_enable_msi_block(pdev, nvec); - if (rc) + if (rc < 0) goto intx; + else if (rc > 0) + goto single_msi; return nvec; |