The first patch in this series introduces the following 4 helper functions to
the PCI core:
* pci_request_mem_regions()
* pci_request_io_regions()
* pci_release_mem_regions()
* pci_release_io_regions()
which encapsulate the request and release of a PCI device's memory or I/O
bars.
The subsequent patches convert the drivers, which use the
pci_request_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM), name);
and similar pattern to use the new interface.
This was suggested by Christoph Hellwig in
http://lists.infradead.org/pipermail/linux-nvme/2016-May/004570.html and
tested on kernel v4.6 with NVMe.
The conversion of the drivers has been performed by the following coccinelle
spatch:
// IORESOURCE_MEM
@@
expression err, pdev, name;
@@
- err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
IORESOURCE_MEM), name);
+ err = pci_request_mem_regions(pdev, name);
@@
expression pdev;
@@
- pci_release_selected_regions(pdev, pci_select_bars(pdev, IORESOURCE_MEM));
+ pci_release_mem_regions(pdev);
@@
expression err, pdev, name;
identifier bars;
@@
- bars = pci_select_bars(pdev, IORESOURCE_MEM);
...
- err = pci_request_selected_regions(pdev, bars, name);
+ err = pci_request_mem_regions(pdev, name);
@@
expression pdev;
identifier bars;
@@
- bars = pci_select_bars(pdev, IORESOURCE_MEM);
...
- pci_release_selected_regions(pdev, bars);
+ pci_release_mem_regions(pdev);
// IORESOURCE_IO
@@
expression err, pdev, name;
@@
- err = pci_request_selected_regions(pdev, pci_select_bars(pdev,
IORESOURCE_IO), name);
+ err = pci_request_io_regions(pdev, name);
@@
expression pdev;
@@
- pci_release_selected_regions(pdev, pci_select_bars(pdev, IORESOURCE_IO));
+ pci_release_io_regions(pdev);
@@
expression err, pdev, name;
identifier bars;
@@
- bars = pci_select_bars(pdev, IORESOURCE_IO);
...
- err = pci_request_selected_regions(pdev, bars, name);
+ err = pci_request_io_regions(pdev, name);
@@
expression pdev;
identifier bars;
@@
- bars = pci_select_bars(pdev, IORESOURCE_IO);
...
- pci_release_selected_regions(pdev, bars);
+ pci_release_io_regions(pdev);
Changes since v2:
* Fixed compilation error on platforms with CONFIG_PCI=n
* Added Jeff's Acked-by on the Intel ethernet patch
* Added Dick's Acked-by on the lpfc patch
Changes since v1:
* Fixed indendatoin in pci.h patch to not cross the 80 chars boundary.
* Split Ethernet patches into two, one for Atheros and one for Intel drivers.
* Correctly named lpfc patch.
* Converted init-path of lpfc driver as well.
* Added Reviewed-by tags were appropriate.
Johannes Thumshirn (6):
PCI: Add helpers to request/release memory and I/O regions
NVMe: Use pci_(request|release)_mem_regions
lpfc: Use pci_(request|release)_mem_regions
GenWQE: Use pci_(request|release)_mem_regions
ethernet/intel: Use pci_(request|release)_mem_regions
alx: Use pci_(request|release)_mem_regions
drivers/misc/genwqe/card_base.c | 13 +++++--------
drivers/net/ethernet/atheros/alx/main.c | 12 +++++-------
drivers/net/ethernet/intel/e1000e/netdev.c | 6 ++----
drivers/net/ethernet/intel/fm10k/fm10k_pci.c | 11 +++--------
drivers/net/ethernet/intel/i40e/i40e_main.c | 9 +++------
drivers/net/ethernet/intel/igb/igb_main.c | 10 +++-------
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 9 +++------
drivers/nvme/host/pci.c | 10 +++-------
drivers/scsi/lpfc/lpfc_init.c | 15 ++++----------
include/linux/pci.h | 28 +++++++++++++++++++++++++++
10 files changed, 59 insertions(+), 64 deletions(-)
Cc: Christoph Hellwig <[email protected]>
Cc: Keith Busch <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: [email protected]
Cc: James Smart <[email protected]>
Cc: Dick Kennedy <[email protected]>
Cc: "James E.J. Bottomley" <[email protected]>
Cc: "Martin K. Petersen" <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Frank Haverkamp <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Jay Cliburn <[email protected]>
Cc: Chris Snook <[email protected]>
Cc: Jeff Kirsher <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
--
1.8.5.6
