Merge branch 'pm-cpufreq'

[firefly-linux-kernel-4.4.55.git] / drivers / acpi / osl.c

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index a934950ff7a058d624a335714eeb4794198997b5..e5f416c7f66e9e92e1ed988c3a709bc2820d56f4 100644 (file)
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -52,6 +52,7 @@
 #include <acpi/acpi.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/processor.h>
+#include "internal.h"
 
 #define _COMPONENT             ACPI_OS_SERVICES
 ACPI_MODULE_NAME("osl");
@@ -142,7 +143,8 @@ static struct osi_linux {
        unsigned int    enable:1;
        unsigned int    dmi:1;
        unsigned int    cmdline:1;
-} osi_linux = {0, 0, 0};
+       unsigned int    default_disabling:1;
+} osi_linux = {0, 0, 0, 0};
 
 static u32 acpi_osi_handler(acpi_string interface, u32 supported)
 {
@@ -565,10 +567,6 @@ static const char * const table_sigs[] = {
        ACPI_SIG_WDRT, ACPI_SIG_DSDT, ACPI_SIG_FADT, ACPI_SIG_PSDT,
        ACPI_SIG_RSDT, ACPI_SIG_XSDT, ACPI_SIG_SSDT, NULL };
 
-/* Non-fatal errors: Affected tables/files are ignored */
-#define INVALID_TABLE(x, path, name)                                   \
-       { pr_err("ACPI OVERRIDE: " x " [%s%s]\n", path, name); continue; }
-
 #define ACPI_HEADER_SIZE sizeof(struct acpi_table_header)
 
 /* Must not increase 10 or needs code modification below */
@@ -595,9 +593,11 @@ void __init acpi_initrd_override(void *data, size_t size)
                data += offset;
                size -= offset;
 
-               if (file.size < sizeof(struct acpi_table_header))
-                       INVALID_TABLE("Table smaller than ACPI header",
-                                     cpio_path, file.name);
+               if (file.size < sizeof(struct acpi_table_header)) {
+                       pr_err("ACPI OVERRIDE: Table smaller than ACPI header [%s%s]\n",
+                               cpio_path, file.name);
+                       continue;
+               }
 
                table = file.data;
 
@@ -605,15 +605,21 @@ void __init acpi_initrd_override(void *data, size_t size)
                        if (!memcmp(table->signature, table_sigs[sig], 4))
                                break;
 
-               if (!table_sigs[sig])
-                       INVALID_TABLE("Unknown signature",
-                                     cpio_path, file.name);
-               if (file.size != table->length)
-                       INVALID_TABLE("File length does not match table length",
-                                     cpio_path, file.name);
-               if (acpi_table_checksum(file.data, table->length))
-                       INVALID_TABLE("Bad table checksum",
-                                     cpio_path, file.name);
+               if (!table_sigs[sig]) {
+                       pr_err("ACPI OVERRIDE: Unknown signature [%s%s]\n",
+                               cpio_path, file.name);
+                       continue;
+               }
+               if (file.size != table->length) {
+                       pr_err("ACPI OVERRIDE: File length does not match table length [%s%s]\n",
+                               cpio_path, file.name);
+                       continue;
+               }
+               if (acpi_table_checksum(file.data, table->length)) {
+                       pr_err("ACPI OVERRIDE: Bad table checksum [%s%s]\n",
+                               cpio_path, file.name);
+                       continue;
+               }
 
                pr_info("%4.4s ACPI table found in initrd [%s%s][0x%x]\n",
                        table->signature, cpio_path, file.name, table->length);
@@ -1353,8 +1359,8 @@ struct osi_setup_entry {
        bool enable;
 };
 
-static struct osi_setup_entry __initdata
-               osi_setup_entries[OSI_STRING_ENTRIES_MAX] = {
+static struct osi_setup_entry
+               osi_setup_entries[OSI_STRING_ENTRIES_MAX] __initdata = {
        {"Module Device", true},
        {"Processor Device", true},
        {"3.0 _SCP Extensions", true},
@@ -1378,6 +1384,17 @@ void __init acpi_osi_setup(char *str)
 
        if (*str == '!') {
                str++;
+               if (*str == '\0') {
+                       osi_linux.default_disabling = 1;
+                       return;
+               } else if (*str == '*') {
+                       acpi_update_interfaces(ACPI_DISABLE_ALL_STRINGS);
+                       for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
+                               osi = &osi_setup_entries[i];
+                               osi->enable = false;
+                       }
+                       return;
+               }
                enable = false;
        }
 
@@ -1443,6 +1460,13 @@ static void __init acpi_osi_setup_late(void)
        int i;
        acpi_status status;
 
+       if (osi_linux.default_disabling) {
+               status = acpi_update_interfaces(ACPI_DISABLE_ALL_VENDOR_STRINGS);
+
+               if (ACPI_SUCCESS(status))
+                       printk(KERN_INFO PREFIX "Disabled all _OSI OS vendors\n");
+       }
+
        for (i = 0; i < OSI_STRING_ENTRIES_MAX; i++) {
                osi = &osi_setup_entries[i];
                str = osi->string;