tree 893613626de4794a7b13fe6793bdebc79420c433
parent 138b9dd1fd7b44176af4f3b672060c790b0eaf55
author Linus Torvalds <[EMAIL PROTECTED]> Tue, 09 Aug 2005 08:46:09 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Tue, 09 Aug 2005 08:46:09 -0700

Revert "[PATCH] PCI: restore BAR values..."

Revert commit fec59a711eef002d4ef9eb8de09dd0a26986eb77, which is
breaking sparc64 that doesn't have a working pci_update_resource.

We'll re-do this after 2.6.13 when we'll do it all properly.

 arch/sparc64/kernel/pci.c |    6 ----
 drivers/pci/pci.c         |   59 +++-------------------------------------------
 drivers/pci/setup-res.c   |    2 -
 include/linux/pci.h       |    3 --
 4 files changed, 5 insertions(+), 65 deletions(-)

diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -413,12 +413,6 @@ static int pci_assign_bus_resource(const
        return -EBUSY;
 }
 
-void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno)
-{
-       /* Not implemented for sparc64... */
-       BUG();
-}
-
 int pci_assign_resource(struct pci_dev *pdev, int resource)
 {
        struct pcidev_cookie *pcp = pdev->sysdata;
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -222,37 +222,6 @@ pci_find_parent_resource(const struct pc
 }
 
 /**
- * pci_restore_bars - restore a devices BAR values (e.g. after wake-up)
- * @dev: PCI device to have its BARs restored
- *
- * Restore the BAR values for a given device, so as to make it
- * accessible by its driver.
- */
-void
-pci_restore_bars(struct pci_dev *dev)
-{
-       int i, numres;
-
-       switch (dev->hdr_type) {
-       case PCI_HEADER_TYPE_NORMAL:
-               numres = 6;
-               break;
-       case PCI_HEADER_TYPE_BRIDGE:
-               numres = 2;
-               break;
-       case PCI_HEADER_TYPE_CARDBUS:
-               numres = 1;
-               break;
-       default:
-               /* Should never get here, but just in case... */
-               return;
-       }
-
-       for (i = 0; i < numres; i ++)
-               pci_update_resource(dev, &dev->resource[i], i);
-}
-
-/**
  * pci_set_power_state - Set the power state of a PCI device
  * @dev: PCI device to be suspended
  * @state: PCI power state (D0, D1, D2, D3hot, D3cold) we're entering
@@ -270,7 +239,7 @@ int (*platform_pci_set_power_state)(stru
 int
 pci_set_power_state(struct pci_dev *dev, pci_power_t state)
 {
-       int pm, need_restore = 0;
+       int pm;
        u16 pmcsr, pmc;
 
        /* bound the state we're entering */
@@ -309,17 +278,14 @@ pci_set_power_state(struct pci_dev *dev,
                        return -EIO;
        }
 
-       pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
-
        /* If we're in D3, force entire word to 0.
         * This doesn't affect PME_Status, disables PME_En, and
         * sets PowerState to 0.
         */
-       if (dev->current_state >= PCI_D3hot) {
-               if (!(pmcsr & PCI_PM_CTRL_NO_SOFT_RESET))
-                       need_restore = 1;
+       if (dev->current_state >= PCI_D3hot)
                pmcsr = 0;
-       } else {
+       else {
+               pci_read_config_word(dev, pm + PCI_PM_CTRL, &pmcsr);
                pmcsr &= ~PCI_PM_CTRL_STATE_MASK;
                pmcsr |= state;
        }
@@ -342,22 +308,6 @@ pci_set_power_state(struct pci_dev *dev,
                platform_pci_set_power_state(dev, state);
 
        dev->current_state = state;
-
-       /* According to section 5.4.1 of the "PCI BUS POWER MANAGEMENT
-        * INTERFACE SPECIFICATION, REV. 1.2", a device transitioning
-        * from D3hot to D0 _may_ perform an internal reset, thereby
-        * going to "D0 Uninitialized" rather than "D0 Initialized".
-        * For example, at least some versions of the 3c905B and the
-        * 3c556B exhibit this behaviour.
-        *
-        * At least some laptop BIOSen (e.g. the Thinkpad T21) leave
-        * devices in a D3hot state at boot.  Consequently, we need to
-        * restore at least the BARs so that the device will be
-        * accessible to its driver.
-        */
-       if (need_restore)
-               pci_restore_bars(dev);
-
        return 0;
 }
 
@@ -855,7 +805,6 @@ struct pci_dev *isa_bridge;
 EXPORT_SYMBOL(isa_bridge);
 #endif
 
-EXPORT_SYMBOL_GPL(pci_restore_bars);
 EXPORT_SYMBOL(pci_enable_device_bars);
 EXPORT_SYMBOL(pci_enable_device);
 EXPORT_SYMBOL(pci_disable_device);
diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -26,7 +26,7 @@
 #include "pci.h"
 
 
-void
+static void
 pci_update_resource(struct pci_dev *dev, struct resource *res, int resno)
 {
        struct pci_bus_region region;
diff --git a/include/linux/pci.h b/include/linux/pci.h
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -225,7 +225,6 @@
 #define  PCI_PM_CAP_PME_D3cold  0x8000  /* PME# from D3 (cold) */
 #define PCI_PM_CTRL            4       /* PM control and status register */
 #define  PCI_PM_CTRL_STATE_MASK        0x0003  /* Current power state (D0 to 
D3) */
-#define  PCI_PM_CTRL_NO_SOFT_RESET     0x0004  /* No reset for D3hot->D0 */
 #define  PCI_PM_CTRL_PME_ENABLE        0x0100  /* PME pin enable */
 #define  PCI_PM_CTRL_DATA_SEL_MASK     0x1e00  /* Data select (??) */
 #define  PCI_PM_CTRL_DATA_SCALE_MASK   0x6000  /* Data scale (??) */
@@ -817,9 +816,7 @@ int pci_set_mwi(struct pci_dev *dev);
 void pci_clear_mwi(struct pci_dev *dev);
 int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
 int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
-void pci_update_resource(struct pci_dev *dev, struct resource *res, int resno);
 int pci_assign_resource(struct pci_dev *dev, int i);
-void pci_restore_bars(struct pci_dev *dev);
 
 /* ROM control related routines */
 void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size);
-
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