path: root/tools/power/acpi
diff options
authorLv Zheng <lv.zheng@intel.com>2014-07-08 10:07:00 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-07-08 14:22:25 +0200
commit80a648c12e4bda45c4f1bb93d83184fb3010ac12 (patch)
tree8ecf2e0765862b97b6b9c8666aa11869e7ad4c5a /tools/power/acpi
parent7824f44ecfef4f05caaa8f9536c523b8d645f102 (diff)
ACPICA: Utilities: Add formatted printing APIs
This patch introduces formatted printing APIs to handle ACPICA specific formatted print requirements. Currently only specific OSPMs will use this customized printing support, Linux kernel doesn't use these APIs at this time. It will be enabled for Linux kernel resident ACPICA after being well tested. So currently this patch is a no-op. The specific formatted printing APIs are useful to ACPICA as: 1. Some portable applications do not link standard C library, so they cannot use standard formatted print APIs directly. 2. Platform specific printing format may differ and thus not portable, for example, u64 is %ull for Linux kernel and is %uI64 for some MSVC versions. 3. Platform specific printing format may conflict with ACPICA's usages while it is not possible for ACPICA developers to test their code for all platforms. For example, developers may generate %pRxxx while Linux kernel treats %pR as structured resource printing and decodes variable argument as a "struct resource" pointer. This patch solves above issues by introducing the new APIs. Note that users of such APIs are not introduced in this patch. Users of acpi_os_file_vprintf()/acpi_ut_file_printf() need to invoke acpi_os_initialize(), this should be taken care by the further patches where such users are introduced. Lv Zheng. Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'tools/power/acpi')
1 files changed, 7 insertions, 0 deletions
diff --git a/tools/power/acpi/os_specific/service_layers/osunixxf.c b/tools/power/acpi/os_specific/service_layers/osunixxf.c
index 0e6a8a6be441..60b58cd18410 100644
--- a/tools/power/acpi/os_specific/service_layers/osunixxf.c
+++ b/tools/power/acpi/os_specific/service_layers/osunixxf.c
@@ -182,10 +182,17 @@ static void os_exit_line_edit_mode(void)
acpi_status acpi_os_initialize(void)
+ acpi_status status;
acpi_gbl_output_file = stdout;
+ status = acpi_os_create_lock(&acpi_gbl_print_lock);
+ if (ACPI_FAILURE(status)) {
+ return (status);
+ }
return (AE_OK);