Merge branch 'ioat' into dmaengine

7 files changed, 33 insertions, 16 deletions

diff --git a/drivers/pnp/isapnp/core.c b/drivers/pnp/isapnp/core.c
index e851160e14f0..918d5f044865 100644
--- a/drivers/pnp/isapnp/core.c
+++ b/drivers/pnp/isapnp/core.c
@@ -37,7 +37,6 @@
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
-#include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/isapnp.h>
diff --git a/drivers/pnp/manager.c b/drivers/pnp/manager.c
index 00fd3577b985..0a15664eef1c 100644
--- a/drivers/pnp/manager.c
+++ b/drivers/pnp/manager.c
@@ -12,7 +12,6 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/pnp.h>
-#include <linux/slab.h>
 #include <linux/bitmap.h>
 #include <linux/mutex.h>
 #include "base.h"
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c
index 5314bf630bc4..f7ff628b7d94 100644
--- a/drivers/pnp/pnpacpi/core.c
+++ b/drivers/pnp/pnpacpi/core.c
@@ -21,6 +21,7 @@
 
 #include <linux/acpi.h>
 #include <linux/pnp.h>
+#include <linux/slab.h>
 #include <linux/mod_devicetable.h>
 #include <acpi/acpi_bus.h>
 
diff --git a/drivers/pnp/pnpacpi/rsparser.c b/drivers/pnp/pnpacpi/rsparser.c
index 54514aa35b09..35bb44af49b3 100644
--- a/drivers/pnp/pnpacpi/rsparser.c
+++ b/drivers/pnp/pnpacpi/rsparser.c
@@ -24,6 +24,7 @@
 #include <linux/acpi.h>
 #include <linux/pci.h>
 #include <linux/pnp.h>
+#include <linux/slab.h>
 #include "../base.h"
 #include "pnpacpi.h"
 
@@ -273,12 +274,33 @@ static void pnpacpi_parse_allocated_busresource(struct pnp_dev *dev,
 	pnp_add_bus_resource(dev, start, end);
 }
 
+static u64 addr_space_length(struct pnp_dev *dev, u64 min, u64 max, u64 len)
+{
+	u64 max_len;
+
+	max_len = max - min + 1;
+	if (len <= max_len)
+		return len;
+
+	/*
+	 * Per 6.4.3.5, _LEN cannot exceed _MAX - _MIN + 1, but some BIOSes
+	 * don't do this correctly, e.g.,
+	 * https://bugzilla.kernel.org/show_bug.cgi?id=15480
+	 */
+	dev_info(&dev->dev,
+	         "resource length %#llx doesn't fit in %#llx-%#llx, trimming\n",
+		 (unsigned long long) len, (unsigned long long) min,
+		 (unsigned long long) max);
+	return max_len;
+}
+
 static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 						  struct acpi_resource *res)
 {
 	struct acpi_resource_address64 addr, *p = &addr;
 	acpi_status status;
 	int window;
+	u64 len;
 
 	status = acpi_resource_to_address64(res, p);
 	if (!ACPI_SUCCESS(status)) {
@@ -287,20 +309,18 @@ static void pnpacpi_parse_allocated_address_space(struct pnp_dev *dev,
 		return;
 	}
 
+	len = addr_space_length(dev, p->minimum, p->maximum, p->address_length);
 	window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;
 
 	if (p->resource_type == ACPI_MEMORY_RANGE)
-		pnpacpi_parse_allocated_memresource(dev,
-			p->minimum, p->address_length,
+		pnpacpi_parse_allocated_memresource(dev, p->minimum, len,
 			p->info.mem.write_protect, window);
 	else if (p->resource_type == ACPI_IO_RANGE)
-		pnpacpi_parse_allocated_ioresource(dev,
-			p->minimum, p->address_length,
+		pnpacpi_parse_allocated_ioresource(dev, p->minimum, len,
 			p->granularity == 0xfff ? ACPI_DECODE_10 :
 				ACPI_DECODE_16, window);
 	else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
-		pnpacpi_parse_allocated_busresource(dev, p->minimum,
-						    p->address_length);
+		pnpacpi_parse_allocated_busresource(dev, p->minimum, len);
 }
 
 static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
@@ -308,21 +328,20 @@ static void pnpacpi_parse_allocated_ext_address_space(struct pnp_dev *dev,
 {
 	struct acpi_resource_extended_address64 *p = &res->data.ext_address64;
 	int window;
+	u64 len;
 
+	len = addr_space_length(dev, p->minimum, p->maximum, p->address_length);
 	window = (p->producer_consumer == ACPI_PRODUCER) ? 1 : 0;
 
 	if (p->resource_type == ACPI_MEMORY_RANGE)
-		pnpacpi_parse_allocated_memresource(dev,
-			p->minimum, p->address_length,
+		pnpacpi_parse_allocated_memresource(dev, p->minimum, len,
 			p->info.mem.write_protect, window);
 	else if (p->resource_type == ACPI_IO_RANGE)
-		pnpacpi_parse_allocated_ioresource(dev,
-			p->minimum, p->address_length,
+		pnpacpi_parse_allocated_ioresource(dev, p->minimum, len,
 			p->granularity == 0xfff ? ACPI_DECODE_10 :
 				ACPI_DECODE_16, window);
 	else if (p->resource_type == ACPI_BUS_NUMBER_RANGE)
-		pnpacpi_parse_allocated_busresource(dev, p->minimum,
-						    p->address_length);
+		pnpacpi_parse_allocated_busresource(dev, p->minimum, len);
 }
 
 static acpi_status pnpacpi_allocated_resource(struct acpi_resource *res,
diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c
index fc83783c3a96..8591f6ab1b35 100644
--- a/drivers/pnp/pnpbios/bioscalls.c
+++ b/drivers/pnp/pnpbios/bioscalls.c
@@ -11,7 +11,6 @@
 #include <linux/pnp.h>
 #include <linux/mm.h>
 #include <linux/smp.h>
-#include <linux/slab.h>
 #include <linux/kmod.h>
 #include <linux/completion.h>
 #include <linux/spinlock.h>
diff --git a/drivers/pnp/pnpbios/rsparser.c b/drivers/pnp/pnpbios/rsparser.c
index a5135ebe5f07..cb1f47bfee96 100644
--- a/drivers/pnp/pnpbios/rsparser.c
+++ b/drivers/pnp/pnpbios/rsparser.c
@@ -5,7 +5,6 @@
 #include <linux/ctype.h>
 #include <linux/pnp.h>
 #include <linux/string.h>
-#include <linux/slab.h>
 
 #ifdef CONFIG_PCI
 #include <linux/pci.h>
diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
index 5b277dbaacde..2e54e6a23c72 100644
--- a/drivers/pnp/resource.c
+++ b/drivers/pnp/resource.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>