Merge branch 'linus' into tracing/core

Merge reason: tracing/core was on a .30-rc1 base and was missing out on
              on a handful of tracing fixes present in .30-rc5-almost.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

4 files changed, 107 insertions, 56 deletions

diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c
index baa5fc05e124..db307a356f08 100644
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -211,6 +211,12 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
 
 ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep)
 
+static unsigned int gts, bfs;
+module_param(gts, uint, 0644);
+module_param(bfs, uint, 0644);
+MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend.");
+MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".);
+
 /*******************************************************************************
  *
  * FUNCTION:    acpi_enter_sleep_state
@@ -278,16 +284,18 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
                 return_ACPI_STATUS(status);
         }
 
-        /* Execute the _GTS method */
+        if (gts) {
+                /* Execute the _GTS method */
 
-        arg_list.count = 1;
-        arg_list.pointer = &arg;
-        arg.type = ACPI_TYPE_INTEGER;
-        arg.integer.value = sleep_state;
+                arg_list.count = 1;
+                arg_list.pointer = &arg;
+                arg.type = ACPI_TYPE_INTEGER;
+                arg.integer.value = sleep_state;
 
-        status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
-        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-                return_ACPI_STATUS(status);
+                status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
+                if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+                        return_ACPI_STATUS(status);
+                }
         }
 
         /* Get current value of PM1A control */
@@ -513,18 +521,19 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
                 }
         }
 
-        /* Execute the _BFS method */
+        if (bfs) {
+                /* Execute the _BFS method */
 
-        arg_list.count = 1;
-        arg_list.pointer = &arg;
-        arg.type = ACPI_TYPE_INTEGER;
-        arg.integer.value = sleep_state;
+                arg_list.count = 1;
+                arg_list.pointer = &arg;
+                arg.type = ACPI_TYPE_INTEGER;
+                arg.integer.value = sleep_state;
 
-        status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
-        if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
-                ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
+                status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
+                if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
+                        ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
+                }
         }
-
         return_ACPI_STATUS(status);
 }
 
diff --git a/drivers/acpi/acpica/hwvalid.c b/drivers/acpi/acpica/hwvalid.c
index 7737afb157c3..ec33f270c5b7 100644
--- a/drivers/acpi/acpica/hwvalid.c
+++ b/drivers/acpi/acpica/hwvalid.c
@@ -90,6 +90,7 @@ static const struct acpi_port_info acpi_protected_ports[] = {
         {"PIT2", 0x0048, 0x004B, ACPI_OSI_WIN_XP},
         {"RTC", 0x0070, 0x0071, ACPI_OSI_WIN_XP},
         {"CMOS", 0x0074, 0x0076, ACPI_OSI_WIN_XP},
+        {"DMA1", 0x0081, 0x0083, ACPI_OSI_WIN_XP},
         {"DMA1L", 0x0087, 0x0087, ACPI_OSI_WIN_XP},
         {"DMA2", 0x0089, 0x008B, ACPI_OSI_WIN_XP},
         {"DMA2L", 0x008F, 0x008F, ACPI_OSI_WIN_XP},
@@ -151,7 +152,7 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
                 ACPI_ERROR((AE_INFO,
                             "Illegal I/O port address/length above 64K: 0x%p/%X",
                             ACPI_CAST_PTR(void, address), byte_width));
-                return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
+                return_ACPI_STATUS(AE_LIMIT);
         }
 
         /* Exit if requested address is not within the protected port table */
@@ -178,11 +179,12 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
                         /* Port illegality may depend on the _OSI calls made by the BIOS */
 
                         if (acpi_gbl_osi_data >= port_info->osi_dependency) {
-                                ACPI_ERROR((AE_INFO,
-                                            "Denied AML access to port 0x%p/%X (%s 0x%.4X-0x%.4X)",
-                                            ACPI_CAST_PTR(void, address),
-                                            byte_width, port_info->name,
-                                            port_info->start, port_info->end));
+                                ACPI_DEBUG_PRINT((ACPI_DB_IO,
+                                                  "Denied AML access to port 0x%p/%X (%s 0x%.4X-0x%.4X)",
+                                                  ACPI_CAST_PTR(void, address),
+                                                  byte_width, port_info->name,
+                                                  port_info->start,
+                                                  port_info->end));
 
                                 return_ACPI_STATUS(AE_AML_ILLEGAL_ADDRESS);
                         }
@@ -206,7 +208,7 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
  *              Value               Where value is placed
  *              Width               Number of bits
  *
- * RETURN:      Value read from port
+ * RETURN:      Status and value read from port
  *
  * DESCRIPTION: Read data from an I/O port or register. This is a front-end
  *              to acpi_os_read_port that performs validation on both the port
@@ -217,14 +219,43 @@ acpi_hw_validate_io_request(acpi_io_address address, u32 bit_width)
 acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
 {
         acpi_status status;
+        u32 one_byte;
+        u32 i;
+
+        /* Validate the entire request and perform the I/O */
 
         status = acpi_hw_validate_io_request(address, width);
-        if (ACPI_FAILURE(status)) {
+        if (ACPI_SUCCESS(status)) {
+                status = acpi_os_read_port(address, value, width);
                 return status;
         }
 
-        status = acpi_os_read_port(address, value, width);
-        return status;
+        if (status != AE_AML_ILLEGAL_ADDRESS) {
+                return status;
+        }
+
+        /*
+         * There has been a protection violation within the request. Fall
+         * back to byte granularity port I/O and ignore the failing bytes.
+         * This provides Windows compatibility.
+         */
+        for (i = 0, *value = 0; i < width; i += 8) {
+
+                /* Validate and read one byte */
+
+                if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
+                        status = acpi_os_read_port(address, &one_byte, 8);
+                        if (ACPI_FAILURE(status)) {
+                                return status;
+                        }
+
+                        *value |= (one_byte << i);
+                }
+
+                address++;
+        }
+
+        return AE_OK;
 }
 
 /******************************************************************************
@@ -235,7 +266,7 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
  *              Value               Value to write
  *              Width               Number of bits
  *
- * RETURN:      None
+ * RETURN:      Status
  *
  * DESCRIPTION: Write data to an I/O port or register. This is a front-end
  *              to acpi_os_write_port that performs validation on both the port
@@ -246,12 +277,39 @@ acpi_status acpi_hw_read_port(acpi_io_address address, u32 *value, u32 width)
 acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width)
 {
         acpi_status status;
+        u32 i;
+
+        /* Validate the entire request and perform the I/O */
 
         status = acpi_hw_validate_io_request(address, width);
-        if (ACPI_FAILURE(status)) {
+        if (ACPI_SUCCESS(status)) {
+                status = acpi_os_write_port(address, value, width);
                 return status;
         }
 
-        status = acpi_os_write_port(address, value, width);
-        return status;
+        if (status != AE_AML_ILLEGAL_ADDRESS) {
+                return status;
+        }
+
+        /*
+         * There has been a protection violation within the request. Fall
+         * back to byte granularity port I/O and ignore the failing bytes.
+         * This provides Windows compatibility.
+         */
+        for (i = 0; i < width; i += 8) {
+
+                /* Validate and write one byte */
+
+                if (acpi_hw_validate_io_request(address, 8) == AE_OK) {
+                        status =
+                            acpi_os_write_port(address, (value >> i) & 0xFF, 8);
+                        if (ACPI_FAILURE(status)) {
+                                return status;
+                        }
+                }
+
+                address++;
+        }
+
+        return AE_OK;
 }
diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c
index b6667ff059e5..88b5a2c4814d 100644
--- a/drivers/acpi/acpica/rscalc.c
+++ b/drivers/acpi/acpica/rscalc.c
@@ -543,6 +543,13 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object,
 
                 package_element = *top_object_list;
 
+                /* We must have a valid Package object */
+
+                if (!package_element ||
+                    (package_element->common.type != ACPI_TYPE_PACKAGE)) {
+                        return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
+                }
+
                 /*
                  * The sub_object_list will now point to an array of the
                  * four IRQ elements: Address, Pin, Source and source_index
diff --git a/drivers/acpi/acpica/rscreate.c b/drivers/acpi/acpica/rscreate.c
index 663f692fffcf..a3c23d686d5f 100644
--- a/drivers/acpi/acpica/rscreate.c
+++ b/drivers/acpi/acpica/rscreate.c
@@ -191,8 +191,6 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
         user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer);
 
         for (index = 0; index < number_of_elements; index++) {
-                int source_name_index = 2;
-                int source_index_index = 3;
 
                 /*
                  * Point user_prt past this current structure
@@ -261,27 +259,6 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                         return_ACPI_STATUS(AE_BAD_DATA);
                 }
 
-                /*
-                 * If BIOS erroneously reversed the _PRT source_name and source_index,
-                 * then reverse them back.
-                 */
-                if ((sub_object_list[3])->common.type !=
-                    ACPI_TYPE_INTEGER) {
-                        if (acpi_gbl_enable_interpreter_slack) {
-                                source_name_index = 3;
-                                source_index_index = 2;
-                                printk(KERN_WARNING
-                                       "ACPI: Handling Garbled _PRT entry\n");
-                        } else {
-                                ACPI_ERROR((AE_INFO,
-                                            "(PRT[%X].source_index) Need Integer, found %s",
-                                            index,
-                                            acpi_ut_get_object_type_name
-                                            (sub_object_list[3])));
-                                return_ACPI_STATUS(AE_BAD_DATA);
-                        }
-                }
-
                 user_prt->pin = (u32) obj_desc->integer.value;
 
                 /*
@@ -304,7 +281,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                  * 3) Third subobject: Dereference the PRT.source_name
                  * The name may be unresolved (slack mode), so allow a null object
                  */
-                obj_desc = sub_object_list[source_name_index];
+                obj_desc = sub_object_list[2];
                 if (obj_desc) {
                         switch (obj_desc->common.type) {
                         case ACPI_TYPE_LOCAL_REFERENCE:
@@ -378,7 +355,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
 
                 /* 4) Fourth subobject: Dereference the PRT.source_index */
 
-                obj_desc = sub_object_list[source_index_index];
+                obj_desc = sub_object_list[3];
                 if (obj_desc->common.type != ACPI_TYPE_INTEGER) {
                         ACPI_ERROR((AE_INFO,
                                     "(PRT[%X].SourceIndex) Need Integer, found %s",