diff options
| author | Andrew Murray <amurray@embedded-bits.co.uk> | 2014-04-14 20:22:54 (GMT) |
|---|---|---|
| committer | Matthew Weigel <Matthew.Weigel@freescale.com> | 2014-12-11 18:36:56 (GMT) |
| commit | 6bc1cdfbe26171cc2cb48f57dfaa91a8fc88b1a8 (patch) | |
| tree | fef685a90f88939a2f29eaed9fd83277c061f7f1 /drivers/pci | |
| parent | 92f1814673480a73d53a868b4420487964235d8a (diff) | |
| download | linux-fsl-qoriq-6bc1cdfbe26171cc2cb48f57dfaa91a8fc88b1a8.tar.xz | |
PCI: designware: Remove unnecessary use of 'conf_lock' spinlock
Serialization of configuration accesses is provided by 'pci_lock' in
drivers/pci/access.c thus making the driver's 'conf_lock' superfluous.
Signed-off-by: Andrew Murray <amurray@embedded-bits.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Richard Zhu <r65037@freescale.com>
The patch is part of:
https://git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git/commit/?id=11c6fbd8d982617996fbc39097a84092eb6e8005
Change-Id: I6e879fc331aafd62d231ac0abb97ac5f0c535f09
Reviewed-on: http://git.am.freescale.net:8181/19693
Tested-by: Review Code-CDREVIEW <CDREVIEW@freescale.com>
Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/host/pcie-designware.c | 6 | ||||
| -rw-r--r-- | drivers/pci/host/pcie-designware.h | 1 |
2 files changed, 0 insertions, 7 deletions
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c index c4e3732..4958460 100644 --- a/drivers/pci/host/pcie-designware.c +++ b/drivers/pci/host/pcie-designware.c @@ -639,7 +639,6 @@ static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where, int size, u32 *val) { struct pcie_port *pp = sys_to_pcie(bus->sysdata); - unsigned long flags; int ret; if (!pp) { @@ -652,13 +651,11 @@ static int dw_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where, return PCIBIOS_DEVICE_NOT_FOUND; } - spin_lock_irqsave(&pp->conf_lock, flags); if (bus->number != pp->root_bus_nr) ret = dw_pcie_rd_other_conf(pp, bus, devfn, where, size, val); else ret = dw_pcie_rd_own_conf(pp, where, size, val); - spin_unlock_irqrestore(&pp->conf_lock, flags); return ret; } @@ -667,7 +664,6 @@ static int dw_pcie_wr_conf(struct pci_bus *bus, u32 devfn, int where, int size, u32 val) { struct pcie_port *pp = sys_to_pcie(bus->sysdata); - unsigned long flags; int ret; if (!pp) { @@ -678,13 +674,11 @@ static int dw_pcie_wr_conf(struct pci_bus *bus, u32 devfn, if (dw_pcie_valid_config(pp, bus, PCI_SLOT(devfn)) == 0) return PCIBIOS_DEVICE_NOT_FOUND; - spin_lock_irqsave(&pp->conf_lock, flags); if (bus->number != pp->root_bus_nr) ret = dw_pcie_wr_other_conf(pp, bus, devfn, where, size, val); else ret = dw_pcie_wr_own_conf(pp, where, size, val); - spin_unlock_irqrestore(&pp->conf_lock, flags); return ret; } diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/host/pcie-designware.h index 3063b35..a10747d 100644 --- a/drivers/pci/host/pcie-designware.h +++ b/drivers/pci/host/pcie-designware.h @@ -41,7 +41,6 @@ struct pcie_port { void __iomem *va_cfg1_base; u64 io_base; u64 mem_base; - spinlock_t conf_lock; struct resource cfg; struct resource io; struct resource mem; |