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author | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-24 13:00:02 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-24 13:00:02 -0800 |
commit | 71492fd1bdd4734d8efd20fe00ebf31027d86d3c (patch) | |
tree | d98ce4131c47f0027dded482d25528b9a57f44ac /drivers/acpi/bus.c | |
parent | 45e62974fb110da926e2a6c5b357c15639bdc233 (diff) | |
parent | fcb11235d3910c39afece52f6e106a9ca565d34b (diff) | |
download | linux-3.10-71492fd1bdd4734d8efd20fe00ebf31027d86d3c.tar.gz linux-3.10-71492fd1bdd4734d8efd20fe00ebf31027d86d3c.tar.bz2 linux-3.10-71492fd1bdd4734d8efd20fe00ebf31027d86d3c.zip |
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: (34 commits)
classmate-laptop: add support for Classmate PC ACPI devices
hp-wmi: Fix two memleaks
acer-wmi, msi-wmi: Remove needless DMI MODULE_ALIAS
dell-wmi: do not keep driver loaded on unsupported boxes
wmi: Free the allocated acpi objects through wmi_get_event_data
drivers/platform/x86/acerhdf.c: check BIOS information whether it begins with string of table
acerhdf: add new BIOS versions
acerhdf: limit modalias matching to supported
toshiba_acpi: convert to seq_file
asus_acpi: convert to seq_file
ACPI: do not select ACPI_DOCK from ATA_ACPI
sony-laptop: enumerate rfkill devices using SN06
sony-laptop: rfkill support for newer models
ACPI: fix OSC regression that caused aer and pciehp not to load
MAINTAINERS: add maintainer for msi-wmi driver
fujitu-laptop: fix tests of acpi_evaluate_integer() return value
arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c: avoid cross-CPU interrupts by using smp_call_function_any()
ACPI: processor: remove _PDC object list from struct acpi_processor
ACPI: processor: change acpi_processor_set_pdc() interface
ACPI: processor: open code acpi_processor_cleanup_pdc
...
Diffstat (limited to 'drivers/acpi/bus.c')
-rw-r--r-- | drivers/acpi/bus.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 65f7e335f12..cf761b904e4 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -397,6 +397,7 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) union acpi_object *out_obj; u8 uuid[16]; u32 errors; + struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; if (!context) return AE_ERROR; @@ -419,16 +420,16 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) in_params[3].buffer.length = context->cap.length; in_params[3].buffer.pointer = context->cap.pointer; - status = acpi_evaluate_object(handle, "_OSC", &input, &context->ret); + status = acpi_evaluate_object(handle, "_OSC", &input, &output); if (ACPI_FAILURE(status)) return status; - /* return buffer should have the same length as cap buffer */ - if (context->ret.length != context->cap.length) + if (!output.length) return AE_NULL_OBJECT; - out_obj = context->ret.pointer; - if (out_obj->type != ACPI_TYPE_BUFFER) { + out_obj = output.pointer; + if (out_obj->type != ACPI_TYPE_BUFFER + || out_obj->buffer.length != context->cap.length) { acpi_print_osc_error(handle, context, "_OSC evaluation returned wrong type"); status = AE_TYPE; @@ -457,11 +458,20 @@ acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) goto out_kfree; } out_success: - return AE_OK; + context->ret.length = out_obj->buffer.length; + context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL); + if (!context->ret.pointer) { + status = AE_NO_MEMORY; + goto out_kfree; + } + memcpy(context->ret.pointer, out_obj->buffer.pointer, + context->ret.length); + status = AE_OK; out_kfree: - kfree(context->ret.pointer); - context->ret.pointer = NULL; + kfree(output.pointer); + if (status != AE_OK) + context->ret.pointer = NULL; return status; } EXPORT_SYMBOL(acpi_run_osc); @@ -888,6 +898,8 @@ static int __init acpi_bus_init(void) goto error1; } + acpi_early_processor_set_pdc(); + /* * Maybe EC region is required at bus_scan/acpi_get_devices. So it * is necessary to enable it as early as possible. |