lkml.org 
[lkml]   [2012]   [Aug]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v3 06/32] PCI/hotplug: use PCIe capabilities access functions to simplify implementation
Date
From: Jiang Liu <jiang.liu@huawei.com>

Use PCIe capabilities access functions to simplify cpihp_slot.c.

Signed-off-by: Jiang Liu <liuj97@gmail.com>
---
drivers/pci/hotplug/pcihp_slot.c | 20 +++++---------------
1 file changed, 5 insertions(+), 15 deletions(-)
diff --git a/drivers/pci/hotplug/pcihp_slot.c b/drivers/pci/hotplug/pcihp_slot.c
index 8c05a18..649dcc8 100644
--- a/drivers/pci/hotplug/pcihp_slot.c
+++ b/drivers/pci/hotplug/pcihp_slot.c
@@ -96,17 +96,11 @@ static void program_hpp_type1(struct pci_dev *dev, struct hpp_type1 *hpp)
static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
{
int pos;
- u16 reg16;
u32 reg32;

if (!hpp)
return;

- /* Find PCI Express capability */
- pos = pci_pcie_cap(dev);
- if (!pos)
- return;
-
if (hpp->revision > 1) {
dev_warn(&dev->dev, "PCIe settings rev %d not supported\n",
hpp->revision);
@@ -114,17 +108,13 @@ static void program_hpp_type2(struct pci_dev *dev, struct hpp_type2 *hpp)
}

/* Initialize Device Control Register */
- pci_read_config_word(dev, pos + PCI_EXP_DEVCTL, &reg16);
- reg16 = (reg16 & hpp->pci_exp_devctl_and) | hpp->pci_exp_devctl_or;
- pci_write_config_word(dev, pos + PCI_EXP_DEVCTL, reg16);
+ pci_pcie_capability_change_word(dev, PCI_EXP_DEVCTL,
+ hpp->pci_exp_devctl_or, ~hpp->pci_exp_devctl_and);

/* Initialize Link Control Register */
- if (dev->subordinate) {
- pci_read_config_word(dev, pos + PCI_EXP_LNKCTL, &reg16);
- reg16 = (reg16 & hpp->pci_exp_lnkctl_and)
- | hpp->pci_exp_lnkctl_or;
- pci_write_config_word(dev, pos + PCI_EXP_LNKCTL, reg16);
- }
+ if (dev->subordinate)
+ pci_pcie_capability_change_word(dev, PCI_EXP_LNKCTL,
+ hpp->pci_exp_lnkctl_or, ~hpp->pci_exp_lnkctl_and);

/* Find Advanced Error Reporting Enhanced Capability */
pos = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_ERR);
--
1.7.9.5


\
 
 \ /
  Last update: 2012-08-01 18:41    [from the cache]
©2003-2011 Jasper Spaans