Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6:
  ACPI: sleep: another HP/Compaq DMI entries for init_set_sci_en_on_resume
  ACPI: add DMI entry for SCI_EN resume quirk on HP dv4
  thermal: sysfs-api.txt - document passive attribute for thermal zones
  thermal: sysfs-api.txt - reformat for improved readability
  acpi: thermal: Add EOL to the trip_point_N_type strings
  ACPI: Move dereference after NULL test
  ACPICA: avoid "Info: mapping multiple BARs. Your kernel is fine."
  ACPI: add __cpuinit to acpi_processor_add()
  acpi-power-meter: Don't leak ACPI error codes to userspace
  eeepc-laptop: don't enable camera at startup if it's already on.
  Revert "eeepc-laptop: Prevent a panic when disabling RT2860 wireless when associated"
  ACPI: clean up video.c boundary checks and types

10 files changed, 80 insertions, 47 deletions

diff --git a/drivers/acpi/acpica/acconfig.h b/drivers/acpi/acpica/acconfig.h
index 8e679ef5b231..a4471e3d3853 100644
--- a/drivers/acpi/acpica/acconfig.h
+++ b/drivers/acpi/acpica/acconfig.h
@@ -103,9 +103,9 @@
 
 #define ACPI_MAX_REFERENCE_COUNT        0x1000
 
-/* Size of cached memory mapping for system memory operation region */
+/* Default page size for use in mapping memory for operation regions */
 
-#define ACPI_SYSMEM_REGION_WINDOW_SIZE  4096
+#define ACPI_DEFAULT_PAGE_SIZE          4096    /* Must be power of 2 */
 
 /* owner_id tracking. 8 entries allows for 255 owner_ids */
 
diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c
index 3a54b737d2da..2bd83ac57c3a 100644
--- a/drivers/acpi/acpica/exregion.c
+++ b/drivers/acpi/acpica/exregion.c
@@ -77,7 +77,8 @@ acpi_ex_system_memory_space_handler(u32 function,
         void *logical_addr_ptr = NULL;
         struct acpi_mem_space_context *mem_info = region_context;
         u32 length;
-        acpi_size window_size;
+        acpi_size map_length;
+        acpi_size page_boundary_map_length;
 #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED
         u32 remainder;
 #endif
@@ -144,25 +145,39 @@ acpi_ex_system_memory_space_handler(u32 function,
                 }
 
                 /*
-                 * Don't attempt to map memory beyond the end of the region, and
-                 * constrain the maximum mapping size to something reasonable.
+                 * Attempt to map from the requested address to the end of the region.
+                 * However, we will never map more than one page, nor will we cross
+                 * a page boundary.
                  */
-                window_size = (acpi_size)
+                map_length = (acpi_size)
                     ((mem_info->address + mem_info->length) - address);
 
-                if (window_size > ACPI_SYSMEM_REGION_WINDOW_SIZE) {
-                        window_size = ACPI_SYSMEM_REGION_WINDOW_SIZE;
+                /*
+                 * If mapping the entire remaining portion of the region will cross
+                 * a page boundary, just map up to the page boundary, do not cross.
+                 * On some systems, crossing a page boundary while mapping regions
+                 * can cause warnings if the pages have different attributes
+                 * due to resource management
+                 */
+                page_boundary_map_length =
+                    ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address;
+
+                if (!page_boundary_map_length) {
+                        page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE;
+                }
+
+                if (map_length > page_boundary_map_length) {
+                        map_length = page_boundary_map_length;
                 }
 
                 /* Create a new mapping starting at the address given */
 
-                mem_info->mapped_logical_address =
-                        acpi_os_map_memory((acpi_physical_address) address, window_size);
+                mem_info->mapped_logical_address = acpi_os_map_memory((acpi_physical_address) address, map_length);
                 if (!mem_info->mapped_logical_address) {
                         ACPI_ERROR((AE_INFO,
                                     "Could not map memory at %8.8X%8.8X, size %X",
                                     ACPI_FORMAT_NATIVE_UINT(address),
-                                    (u32) window_size));
+                                    (u32) map_length));
                         mem_info->mapped_length = 0;
                         return_ACPI_STATUS(AE_NO_MEMORY);
                 }
@@ -170,7 +185,7 @@ acpi_ex_system_memory_space_handler(u32 function,
                 /* Save the physical address and mapping size */
 
                 mem_info->mapped_physical_address = address;
-                mem_info->mapped_length = window_size;
+                mem_info->mapped_length = map_length;
         }
 
         /*
diff --git a/drivers/acpi/power_meter.c b/drivers/acpi/power_meter.c
index e6bfd77986b8..2ef7030a0c28 100644
--- a/drivers/acpi/power_meter.c
+++ b/drivers/acpi/power_meter.c
@@ -294,7 +294,11 @@ static int set_acpi_trip(struct acpi_power_meter_resource *resource)
                 return -EINVAL;
         }
 
-        return data;
+        /* _PTP returns 0 on success, nonzero otherwise */
+        if (data)
+                return -EINVAL;
+
+        return 0;
 }
 
 static ssize_t set_trip(struct device *dev, struct device_attribute *devattr,
diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c
index f8b6f555ba52..d0d25e2e1ced 100644
--- a/drivers/acpi/proc.c
+++ b/drivers/acpi/proc.c
@@ -393,7 +393,7 @@ acpi_system_write_wakeup_device(struct file *file,
         struct list_head *node, *next;
         char strbuf[5];
         char str[5] = "";
-        int len = count;
+        unsigned int len = count;
         struct acpi_device *found_dev = NULL;
 
         if (len > 4)
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index c567b46dfa0f..ec742a4e5635 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -770,7 +770,7 @@ static struct notifier_block acpi_cpu_notifier =
             .notifier_call = acpi_cpu_soft_notify,
 };
 
-static int acpi_processor_add(struct acpi_device *device)
+static int __cpuinit acpi_processor_add(struct acpi_device *device)
 {
         struct acpi_processor *pr = NULL;
         int result = 0;
diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c
index 4c6c14c1e307..1c5d7a8b2fdf 100644
--- a/drivers/acpi/processor_throttling.c
+++ b/drivers/acpi/processor_throttling.c
@@ -1133,15 +1133,15 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr)
         int result = 0;
         struct acpi_processor_throttling *pthrottling;
 
+        if (!pr)
+                return -EINVAL;
+
         ACPI_DEBUG_PRINT((ACPI_DB_INFO,
                           "pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n",
                           pr->throttling.address,
                           pr->throttling.duty_offset,
                           pr->throttling.duty_width));
 
-        if (!pr)
-                return -EINVAL;
-
         /*
          * Evaluate _PTC, _TSS and _TPC
          * They must all be present or none of them can be used.
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index a90afcc723ab..4cc1b8116e76 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -413,6 +413,30 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = {
                 },
         },
         {
+        .callback = init_set_sci_en_on_resume,
+        .ident = "Hewlett-Packard Pavilion dv4",
+        .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4"),
+                },
+        },
+        {
+        .callback = init_set_sci_en_on_resume,
+        .ident = "Hewlett-Packard Pavilion dv7",
+        .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7"),
+                },
+        },
+        {
+        .callback = init_set_sci_en_on_resume,
+        .ident = "Hewlett-Packard Compaq Presario CQ40 Notebook PC",
+        .matches = {
+                DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
+                DMI_MATCH(DMI_PRODUCT_NAME, "Compaq Presario CQ40 Notebook PC"),
+                },
+        },
+        {
         .callback = init_old_suspend_ordering,
         .ident = "Panasonic CF51-2L",
         .matches = {
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 64e3c581b7a9..05dff631591c 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1223,7 +1223,7 @@ acpi_video_device_write_state(struct file *file,
         u32 state = 0;
 
 
-        if (!dev || count + 1 > sizeof str)
+        if (!dev || count >= sizeof(str))
                 return -EINVAL;
 
         if (copy_from_user(str, buffer, count))
@@ -1280,7 +1280,7 @@ acpi_video_device_write_brightness(struct file *file,
         int i;
 
 
-        if (!dev || !dev->brightness || count + 1 > sizeof str)
+        if (!dev || !dev->brightness || count >= sizeof(str))
                 return -EINVAL;
 
         if (copy_from_user(str, buffer, count))
@@ -1562,7 +1562,7 @@ acpi_video_bus_write_POST(struct file *file,
         unsigned long long opt, options;
 
 
-        if (!video || count + 1 > sizeof str)
+        if (!video || count >= sizeof(str))
                 return -EINVAL;
 
         status = acpi_video_bus_POST_options(video, &options);
@@ -1602,7 +1602,7 @@ acpi_video_bus_write_DOS(struct file *file,
         unsigned long opt;
 
 
-        if (!video || count + 1 > sizeof str)
+        if (!video || count >= sizeof(str))
                 return -EINVAL;
 
         if (copy_from_user(str, buffer, count))
diff --git a/drivers/platform/x86/eeepc-laptop.c b/drivers/platform/x86/eeepc-laptop.c
index d379e74a05d0..4226e5352738 100644
--- a/drivers/platform/x86/eeepc-laptop.c
+++ b/drivers/platform/x86/eeepc-laptop.c
@@ -150,8 +150,6 @@ struct eeepc_hotk {
 /* The actual device the driver binds to */
 static struct eeepc_hotk *ehotk;
 
-static void eeepc_rfkill_hotplug(bool real);
-
 /* Platform device/driver */
 static int eeepc_hotk_thaw(struct device *device);
 static int eeepc_hotk_restore(struct device *device);
@@ -345,16 +343,7 @@ static bool eeepc_wlan_rfkill_blocked(void)
 static int eeepc_rfkill_set(void *data, bool blocked)
 {
         unsigned long asl = (unsigned long)data;
-        int ret;
-
-        if (asl != CM_ASL_WLAN)
-                return set_acpi(asl, !blocked);
-
-        /* hack to avoid panic with rt2860sta */
-        if (blocked)
-                eeepc_rfkill_hotplug(false);
-        ret = set_acpi(asl, !blocked);
-        return ret;
+        return set_acpi(asl, !blocked);
 }
 
 static const struct rfkill_ops eeepc_rfkill_ops = {
@@ -367,7 +356,8 @@ static void __devinit eeepc_enable_camera(void)
          * If the following call to set_acpi() fails, it's because there's no
          * camera so we can ignore the error.
          */
-        set_acpi(CM_ASL_CAMERA, 1);
+        if (get_acpi(CM_ASL_CAMERA) == 0)
+                set_acpi(CM_ASL_CAMERA, 1);
 }
 
 /*
@@ -654,13 +644,13 @@ static int eeepc_get_adapter_status(struct hotplug_slot *hotplug_slot,
         return 0;
 }
 
-static void eeepc_rfkill_hotplug(bool real)
+static void eeepc_rfkill_hotplug(void)
 {
         struct pci_dev *dev;
         struct pci_bus *bus;
-        bool blocked = real ? eeepc_wlan_rfkill_blocked() : true;
+        bool blocked = eeepc_wlan_rfkill_blocked();
 
-        if (real && ehotk->wlan_rfkill)
+        if (ehotk->wlan_rfkill)
                 rfkill_set_sw_state(ehotk->wlan_rfkill, blocked);
 
         mutex_lock(&ehotk->hotplug_lock);
@@ -703,7 +693,7 @@ static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
         if (event != ACPI_NOTIFY_BUS_CHECK)
                 return;
 
-        eeepc_rfkill_hotplug(true);
+        eeepc_rfkill_hotplug();
 }
 
 static void eeepc_hotk_notify(struct acpi_device *device, u32 event)
@@ -861,7 +851,7 @@ static int eeepc_hotk_restore(struct device *device)
 {
         /* Refresh both wlan rfkill state and pci hotplug */
         if (ehotk->wlan_rfkill)
-                eeepc_rfkill_hotplug(true);
+                eeepc_rfkill_hotplug();
 
         if (ehotk->bluetooth_rfkill)
                 rfkill_set_sw_state(ehotk->bluetooth_rfkill,
@@ -1004,7 +994,7 @@ static void eeepc_rfkill_exit(void)
          * Refresh pci hotplug in case the rfkill state was changed after
          * eeepc_unregister_rfkill_notifier()
          */
-        eeepc_rfkill_hotplug(true);
+        eeepc_rfkill_hotplug();
         if (ehotk->hotplug_slot)
                 pci_hp_deregister(ehotk->hotplug_slot);
 
@@ -1120,7 +1110,7 @@ static int eeepc_rfkill_init(struct device *dev)
          * Refresh pci hotplug in case the rfkill state was changed during
          * setup.
          */
-        eeepc_rfkill_hotplug(true);
+        eeepc_rfkill_hotplug();
 
 exit:
         if (result && result != -ENODEV)
diff --git a/drivers/thermal/thermal_sys.c b/drivers/thermal/thermal_sys.c
index 4e83c297ec9e..6f8d8f971212 100644
--- a/drivers/thermal/thermal_sys.c
+++ b/drivers/thermal/thermal_sys.c
@@ -180,15 +180,15 @@ trip_point_type_show(struct device *dev, struct device_attribute *attr,
 
         switch (type) {
         case THERMAL_TRIP_CRITICAL:
-                return sprintf(buf, "critical");
+                return sprintf(buf, "critical\n");
         case THERMAL_TRIP_HOT:
-                return sprintf(buf, "hot");
+                return sprintf(buf, "hot\n");
         case THERMAL_TRIP_PASSIVE:
-                return sprintf(buf, "passive");
+                return sprintf(buf, "passive\n");
         case THERMAL_TRIP_ACTIVE:
-                return sprintf(buf, "active");
+                return sprintf(buf, "active\n");
         default:
-                return sprintf(buf, "unknown");
+                return sprintf(buf, "unknown\n");
         }
 }