Merge branch 'master' of /home/davem/src/GIT/linux-2.6/

5 files changed, 39 insertions, 21 deletions

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index f4b7c79..f3f6865 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -61,6 +61,8 @@
 /* global iommu list, set NULL for ignored DMAR units */
 static struct intel_iommu **g_iommus;
 
+static int rwbf_quirk;
+
 /*
  * 0: Present
  * 1-11: Reserved
@@ -785,7 +787,7 @@ static void iommu_flush_write_buffer(struct intel_iommu *iommu)
 	u32 val;
 	unsigned long flag;
 
-	if (!cap_rwbf(iommu->cap))
+	if (!rwbf_quirk && !cap_rwbf(iommu->cap))
 		return;
 	val = iommu->gcmd | DMA_GCMD_WBF;
 
@@ -3137,3 +3139,15 @@ static struct iommu_ops intel_iommu_ops = {
 	.unmap		= intel_iommu_unmap_range,
 	.iova_to_phys	= intel_iommu_iova_to_phys,
 };
+
+static void __devinit quirk_iommu_rwbf(struct pci_dev *dev)
+{
+	/*
+	 * Mobile 4 Series Chipset neglects to set RWBF capability,
+	 * but needs it:
+	 */
+	printk(KERN_INFO "DMAR: Forcing write-buffer flush capability\n");
+	rwbf_quirk = 1;
+}
+
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_rwbf);
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 44f15ff..baba2eb 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -103,14 +103,12 @@ static void msix_set_enable(struct pci_dev *dev, int enable)
 	}
 }
 
-/*
- * Essentially, this is ((1 << (1 << x)) - 1), but without the
- * undefinedness of a << 32.
- */
 static inline __attribute_const__ u32 msi_mask(unsigned x)
 {
-	static const u32 mask[] = { 1, 2, 4, 0xf, 0xff, 0xffff, 0xffffffff };
-	return mask[x];
+	/* Don't shift by >= width of type */
+	if (x >= 5)
+		return 0xffffffff;
+	return (1 << (1 << x)) - 1;
 }
 
 static void msix_flush_writes(struct irq_desc *desc)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index e3efe6b..6d61200 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -1540,16 +1540,21 @@ void pci_release_region(struct pci_dev *pdev, int bar)
 }
 
 /**
- *	pci_request_region - Reserved PCI I/O and memory resource
+ *	__pci_request_region - Reserved PCI I/O and memory resource
  *	@pdev: PCI device whose resources are to be reserved
  *	@bar: BAR to be reserved
  *	@res_name: Name to be associated with resource.
+ *	@exclusive: whether the region access is exclusive or not
  *
  *	Mark the PCI region associated with PCI device @pdev BR @bar as
  *	being reserved by owner @res_name.  Do not access any
  *	address inside the PCI regions unless this call returns
  *	successfully.
  *
+ *	If @exclusive is set, then the region is marked so that userspace
+ *	is explicitly not allowed to map the resource via /dev/mem or
+ * 	sysfs MMIO access.
+ *
  *	Returns 0 on success, or %EBUSY on error.  A warning
  *	message is also printed on failure.
  */
@@ -1588,12 +1593,12 @@ err_out:
 }
 
 /**
- *	pci_request_region - Reserved PCI I/O and memory resource
+ *	pci_request_region - Reserve PCI I/O and memory resource
  *	@pdev: PCI device whose resources are to be reserved
  *	@bar: BAR to be reserved
- *	@res_name: Name to be associated with resource.
+ *	@res_name: Name to be associated with resource
  *
- *	Mark the PCI region associated with PCI device @pdev BR @bar as
+ *	Mark the PCI region associated with PCI device @pdev BAR @bar as
  *	being reserved by owner @res_name.  Do not access any
  *	address inside the PCI regions unless this call returns
  *	successfully.
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 26ddf78..07c0aa5 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -16,21 +16,21 @@ extern int pci_mmap_fits(struct pci_dev *pdev, int resno,
 #endif
 
 /**
- * Firmware PM callbacks
+ * struct pci_platform_pm_ops - Firmware PM callbacks
  *
- * @is_manageable - returns 'true' if given device is power manageable by the
- *                  platform firmware
+ * @is_manageable: returns 'true' if given device is power manageable by the
+ *                 platform firmware
  *
- * @set_state - invokes the platform firmware to set the device's power state
+ * @set_state: invokes the platform firmware to set the device's power state
  *
- * @choose_state - returns PCI power state of given device preferred by the
- *                 platform; to be used during system-wide transitions from a
- *                 sleeping state to the working state and vice versa
+ * @choose_state: returns PCI power state of given device preferred by the
+ *                platform; to be used during system-wide transitions from a
+ *                sleeping state to the working state and vice versa
  *
- * @can_wakeup - returns 'true' if given device is capable of waking up the
- *               system from a sleeping state
+ * @can_wakeup: returns 'true' if given device is capable of waking up the
+ *              system from a sleeping state
  *
- * @sleep_wake - enables/disables the system wake up capability of given device
+ * @sleep_wake: enables/disables the system wake up capability of given device
  *
  * If given platform is generally capable of power managing PCI devices, all of
  * these callbacks are mandatory.
diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c
index 29cbe47..36864a9 100644
--- a/drivers/pci/rom.c
+++ b/drivers/pci/rom.c
@@ -55,6 +55,7 @@ void pci_disable_rom(struct pci_dev *pdev)
 
 /**
  * pci_get_rom_size - obtain the actual size of the ROM image
+ * @pdev: target PCI device
  * @rom: kernel virtual pointer to image of ROM
  * @size: size of PCI window
  *  return: size of actual ROM image