[PATCH v3 0/3] AHCI: Add generic MSI-X interrupt support to SATA PCI driver

Robert Richter rric at kernel.org
Wed May 27 01:01:30 PDT 2015

From: Robert Richter <rrichter at cavium.com>

This patch set adds generic support for MSI-X interrupts to the SATA
PCI driver.

The first 2 patches rework the code, one splits msi and intx code into
separate functions, the other changes interrupt initialization to
store the irq number in the ahci data structure (struct
ahci_host_priv). Both changes are needed to implement MSI-X support in
the last 3rd patch.

 * store irq number in struct ahci_host_priv
 * change initialization order from msix-msi-intx to msi-msix-intx
 * improve comments in ahci_init_msix()
 * improve error message in ahci_init_msix()
 * do not enable MSI-X if MSI is actively disabled for the device

 * determine irq vector from pci_dev->msi_list

Robert Richter (3):
  ahci: Move interrupt enablement code to separate functions
  ahci: Store irq number in struct ahci_host_priv
  AHCI: Add generic MSI-X interrupt support to SATA PCI driver

 drivers/ata/acard-ahci.c       |   4 +-
 drivers/ata/ahci.c             | 138 ++++++++++++++++++++++++++++++++++++-----
 drivers/ata/ahci.h             |   4 +-
 drivers/ata/libahci.c          |  25 +++-----
 drivers/ata/libahci_platform.c |   4 +-
 drivers/ata/sata_highbank.c    |   3 +-
 6 files changed, 143 insertions(+), 35 deletions(-)


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