Merge branch 'master' into for-2.6.35

[safe/jmp/linux-2.6] / drivers / pci / pci.c

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 897fa5c..3749912 100644 (file)
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/pci.h>
 #include <linux/pm.h>
+#include <linux/slab.h>
 #include <linux/module.h>
 #include <linux/spinlock.h>
 #include <linux/string.h>
@@ -678,7 +679,7 @@ static void __pci_start_power_transition(struct pci_dev *dev, pci_power_t state)
  */
 int __pci_complete_power_transition(struct pci_dev *dev, pci_power_t state)
 {
-       return state > PCI_D0 ?
+       return state >= PCI_D0 ?
                        pci_platform_power_transition(dev, state) : -EINVAL;
 }
 EXPORT_SYMBOL_GPL(__pci_complete_power_transition);
@@ -715,10 +716,6 @@ int pci_set_power_state(struct pci_dev *dev, pci_power_t state)
                 */
                return 0;
 
-       /* Check if we're already there */
-       if (dev->current_state == state)
-               return 0;
-
        __pci_start_power_transition(dev, state);
 
        /* This device is quirked not to be put into D3, so
@@ -1583,8 +1580,10 @@ void pci_pm_init(struct pci_dev *dev)
        int pm;
        u16 pmc;
 
+       pm_runtime_forbid(&dev->dev);
        device_enable_async_suspend(&dev->dev);
        dev->wakeup_prepared = false;
+
        dev->pm_cap = 0;
 
        /* find PCI PM capability in list */
@@ -2296,35 +2295,6 @@ void pci_msi_off(struct pci_dev *dev)
        }
 }
 
-#ifndef HAVE_ARCH_PCI_SET_DMA_MASK
-/*
- * These can be overridden by arch-specific implementations
- */
-int
-pci_set_dma_mask(struct pci_dev *dev, u64 mask)
-{
-       if (!pci_dma_supported(dev, mask))
-               return -EIO;
-
-       dev->dma_mask = mask;
-       dev_dbg(&dev->dev, "using %dbit DMA mask\n", fls64(mask));
-
-       return 0;
-}
-    
-int
-pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask)
-{
-       if (!pci_dma_supported(dev, mask))
-               return -EIO;
-
-       dev->dev.coherent_dma_mask = mask;
-       dev_dbg(&dev->dev, "using %dbit consistent DMA mask\n", fls64(mask));
-
-       return 0;
-}
-#endif
-
 #ifndef HAVE_ARCH_PCI_SET_DMA_MAX_SEGMENT_SIZE
 int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size)
 {
@@ -2603,18 +2573,17 @@ EXPORT_SYMBOL_GPL(pci_reset_function);
  */
 int pcix_get_max_mmrbc(struct pci_dev *dev)
 {
-       int err, cap;
+       int cap;
        u32 stat;
 
        cap = pci_find_capability(dev, PCI_CAP_ID_PCIX);
        if (!cap)
                return -EINVAL;
 
-       err = pci_read_config_dword(dev, cap + PCI_X_STATUS, &stat);
-       if (err)
+       if (pci_read_config_dword(dev, cap + PCI_X_STATUS, &stat))
                return -EINVAL;
 
-       return (stat & PCI_X_STATUS_MAX_READ) >> 12;
+       return 512 << ((stat & PCI_X_STATUS_MAX_READ) >> 21);
 }
 EXPORT_SYMBOL(pcix_get_max_mmrbc);
 
@@ -2627,18 +2596,17 @@ EXPORT_SYMBOL(pcix_get_max_mmrbc);
  */
 int pcix_get_mmrbc(struct pci_dev *dev)
 {
-       int ret, cap;
-       u32 cmd;
+       int cap;
+       u16 cmd;
 
        cap = pci_find_capability(dev, PCI_CAP_ID_PCIX);
        if (!cap)
                return -EINVAL;
 
-       ret = pci_read_config_dword(dev, cap + PCI_X_CMD, &cmd);
-       if (!ret)
-               ret = 512 << ((cmd & PCI_X_CMD_MAX_READ) >> 2);
+       if (pci_read_config_word(dev, cap + PCI_X_CMD, &cmd))
+               return -EINVAL;
 
-       return ret;
+       return 512 << ((cmd & PCI_X_CMD_MAX_READ) >> 2);
 }
 EXPORT_SYMBOL(pcix_get_mmrbc);
 
@@ -2653,28 +2621,27 @@ EXPORT_SYMBOL(pcix_get_mmrbc);
  */
 int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc)
 {
-       int cap, err = -EINVAL;
-       u32 stat, cmd, v, o;
+       int cap;
+       u32 stat, v, o;
+       u16 cmd;
 
        if (mmrbc < 512 || mmrbc > 4096 || !is_power_of_2(mmrbc))
-               goto out;
+               return -EINVAL;
 
        v = ffs(mmrbc) - 10;
 
        cap = pci_find_capability(dev, PCI_CAP_ID_PCIX);
        if (!cap)
-               goto out;
+               return -EINVAL;
 
-       err = pci_read_config_dword(dev, cap + PCI_X_STATUS, &stat);
-       if (err)
-               goto out;
+       if (pci_read_config_dword(dev, cap + PCI_X_STATUS, &stat))
+               return -EINVAL;
 
        if (v > (stat & PCI_X_STATUS_MAX_READ) >> 21)
                return -E2BIG;
 
-       err = pci_read_config_dword(dev, cap + PCI_X_CMD, &cmd);
-       if (err)
-               goto out;
+       if (pci_read_config_word(dev, cap + PCI_X_CMD, &cmd))
+               return -EINVAL;
 
        o = (cmd & PCI_X_CMD_MAX_READ) >> 2;
        if (o != v) {
@@ -2684,10 +2651,10 @@ int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc)
 
                cmd &= ~PCI_X_CMD_MAX_READ;
                cmd |= v << 2;
-               err = pci_write_config_dword(dev, cap + PCI_X_CMD, cmd);
+               if (pci_write_config_word(dev, cap + PCI_X_CMD, cmd))
+                       return -EIO;
        }
-out:
-       return err;
+       return 0;
 }
 EXPORT_SYMBOL(pcix_set_mmrbc);
 
@@ -3050,7 +3017,6 @@ EXPORT_SYMBOL(pcim_pin_device);
 EXPORT_SYMBOL(pci_disable_device);
 EXPORT_SYMBOL(pci_find_capability);
 EXPORT_SYMBOL(pci_bus_find_capability);
-EXPORT_SYMBOL(pci_register_set_vga_state);
 EXPORT_SYMBOL(pci_release_regions);
 EXPORT_SYMBOL(pci_request_regions);
 EXPORT_SYMBOL(pci_request_regions_exclusive);
@@ -3066,8 +3032,6 @@ EXPORT_SYMBOL(pci_set_mwi);
 EXPORT_SYMBOL(pci_try_set_mwi);
 EXPORT_SYMBOL(pci_clear_mwi);
 EXPORT_SYMBOL_GPL(pci_intx);
-EXPORT_SYMBOL(pci_set_dma_mask);
-EXPORT_SYMBOL(pci_set_consistent_dma_mask);
 EXPORT_SYMBOL(pci_assign_resource);
 EXPORT_SYMBOL(pci_find_parent_resource);
 EXPORT_SYMBOL(pci_select_bars);