From: Kenji Kaneshige Date: Thu, 15 May 2008 06:18:53 +0000 (+0900) Subject: pci-acpi: remove duplicate code for _OSC X-Git-Tag: v2.6.27-rc1~1046^2~63 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a7a4faf96eef8c87421be0d3f33ea036804289b;p=linux-2.6 pci-acpi: remove duplicate code for _OSC Remove the duplicated code in acpi_query_osc() and acpi_run_osc(). It simplifies the code very much. Signed-off-by: Kenji Kaneshige Acked-by: Shaohua Li Signed-off-by: Jesse Barnes --- diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 9d6fc8e628..032b326801 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -46,40 +46,15 @@ static struct acpi_osc_data *acpi_get_osc_data(acpi_handle handle) static u8 OSC_UUID[16] = {0x5B, 0x4D, 0xDB, 0x33, 0xF7, 0x1F, 0x1C, 0x40, 0x96, 0x57, 0x74, 0x41, 0xC0, 0x3D, 0xD7, 0x66}; -static acpi_status -acpi_query_osc ( - acpi_handle handle, - u32 level, - void *context, - void **retval ) +static acpi_status acpi_run_osc(acpi_handle handle, + struct acpi_osc_data *osc_data) { - acpi_status status; - struct acpi_object_list input; - union acpi_object in_params[4]; - struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; - union acpi_object *out_obj; - u32 osc_dw0; - acpi_status *ret_status = (acpi_status *)retval; - struct acpi_osc_data *osc_data; - u32 flags = (unsigned long)context, temp; - acpi_handle tmp; - - status = acpi_get_handle(handle, "_OSC", &tmp); - if (ACPI_FAILURE(status)) - return status; - - osc_data = acpi_get_osc_data(handle); - if (!osc_data) { - printk(KERN_ERR "acpi osc data array is full\n"); - return AE_ERROR; - } - - osc_data->ctrlset_buf[OSC_SUPPORT_TYPE] |= (flags & OSC_SUPPORT_MASKS); - - /* do _OSC query for all possible controls */ - temp = osc_data->ctrlset_buf[OSC_CONTROL_TYPE]; - osc_data->ctrlset_buf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; - osc_data->ctrlset_buf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS; + acpi_status status; + struct acpi_object_list input; + union acpi_object in_params[4]; + struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; + union acpi_object *out_obj; + u32 osc_dw0, flags = osc_data->ctrlset_buf[OSC_QUERY_TYPE]; /* Setting up input parameters */ input.count = 4; @@ -97,14 +72,13 @@ acpi_query_osc ( status = acpi_evaluate_object(handle, "_OSC", &input, &output); if (ACPI_FAILURE(status)) - goto out_nofree; - out_obj = output.pointer; + return status; + out_obj = output.pointer; if (out_obj->type != ACPI_TYPE_BUFFER) { - printk(KERN_DEBUG - "Evaluate _OSC returns wrong type\n"); + printk(KERN_DEBUG "Evaluate _OSC returns wrong type\n"); status = AE_TYPE; - goto query_osc_out; + goto out_kfree; } osc_dw0 = *((u32 *) out_obj->buffer.pointer); if (osc_dw0) { @@ -115,93 +89,64 @@ acpi_query_osc ( if (osc_dw0 & OSC_INVALID_REVISION_ERROR) printk(KERN_DEBUG "_OSC invalid revision\n"); if (osc_dw0 & OSC_CAPABILITIES_MASK_ERROR) { - /* Update Global Control Set */ - osc_data->global_ctrlsets = - *((u32 *)(out_obj->buffer.pointer + 8)); - status = AE_OK; - goto query_osc_out; + if (flags & OSC_QUERY_ENABLE) + goto out_success; + printk(KERN_DEBUG "_OSC FW not grant req. control\n"); + status = AE_SUPPORT; + goto out_kfree; } status = AE_ERROR; - goto query_osc_out; + goto out_kfree; + } +out_success: + if (flags & OSC_QUERY_ENABLE) { + /* Update Global Control Set */ + osc_data->global_ctrlsets = + *((u32 *)(out_obj->buffer.pointer + 8)); } - - /* Update Global Control Set */ - osc_data->global_ctrlsets = *((u32 *)(out_obj->buffer.pointer + 8)); status = AE_OK; -query_osc_out: +out_kfree: kfree(output.pointer); -out_nofree: - *ret_status = status; - - osc_data->ctrlset_buf[OSC_QUERY_TYPE] = !OSC_QUERY_ENABLE; - osc_data->ctrlset_buf[OSC_CONTROL_TYPE] = temp; - if (ACPI_FAILURE(status)) { - /* no osc support at all */ - osc_data->ctrlset_buf[OSC_SUPPORT_TYPE] = 0; - } - return status; } - -static acpi_status -acpi_run_osc ( - acpi_handle handle, - void *context) +static acpi_status acpi_query_osc(acpi_handle handle, + u32 level, void *context, void **retval) { - acpi_status status; - struct acpi_object_list input; - union acpi_object in_params[4]; - struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; - union acpi_object *out_obj; - u32 osc_dw0; - - /* Setting up input parameters */ - input.count = 4; - input.pointer = in_params; - in_params[0].type = ACPI_TYPE_BUFFER; - in_params[0].buffer.length = 16; - in_params[0].buffer.pointer = OSC_UUID; - in_params[1].type = ACPI_TYPE_INTEGER; - in_params[1].integer.value = 1; - in_params[2].type = ACPI_TYPE_INTEGER; - in_params[2].integer.value = 3; - in_params[3].type = ACPI_TYPE_BUFFER; - in_params[3].buffer.length = 12; - in_params[3].buffer.pointer = (u8 *)context; + acpi_status status; + acpi_status *ret_status = (acpi_status *)retval; + struct acpi_osc_data *osc_data; + u32 flags = (unsigned long)context, temp; + acpi_handle tmp; - status = acpi_evaluate_object(handle, "_OSC", &input, &output); - if (ACPI_FAILURE (status)) + status = acpi_get_handle(handle, "_OSC", &tmp); + if (ACPI_FAILURE(status)) return status; - out_obj = output.pointer; - if (out_obj->type != ACPI_TYPE_BUFFER) { - printk(KERN_DEBUG - "Evaluate _OSC returns wrong type\n"); - status = AE_TYPE; - goto run_osc_out; + osc_data = acpi_get_osc_data(handle); + if (!osc_data) { + printk(KERN_ERR "acpi osc data array is full\n"); + return AE_ERROR; } - osc_dw0 = *((u32 *) out_obj->buffer.pointer); - if (osc_dw0) { - if (osc_dw0 & OSC_REQUEST_ERROR) - printk(KERN_DEBUG "_OSC request fails\n"); - if (osc_dw0 & OSC_INVALID_UUID_ERROR) - printk(KERN_DEBUG "_OSC invalid UUID\n"); - if (osc_dw0 & OSC_INVALID_REVISION_ERROR) - printk(KERN_DEBUG "_OSC invalid revision\n"); - if (osc_dw0 & OSC_CAPABILITIES_MASK_ERROR) { - printk(KERN_DEBUG "_OSC FW not grant req. control\n"); - status = AE_SUPPORT; - goto run_osc_out; - } - status = AE_ERROR; - goto run_osc_out; + + osc_data->ctrlset_buf[OSC_SUPPORT_TYPE] |= (flags & OSC_SUPPORT_MASKS); + + /* do _OSC query for all possible controls */ + temp = osc_data->ctrlset_buf[OSC_CONTROL_TYPE]; + osc_data->ctrlset_buf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; + osc_data->ctrlset_buf[OSC_CONTROL_TYPE] = OSC_CONTROL_MASKS; + + status = acpi_run_osc(handle, osc_data); + *ret_status = status; + + osc_data->ctrlset_buf[OSC_QUERY_TYPE] = !OSC_QUERY_ENABLE; + osc_data->ctrlset_buf[OSC_CONTROL_TYPE] = temp; + if (ACPI_FAILURE(status)) { + /* no osc support at all */ + osc_data->ctrlset_buf[OSC_SUPPORT_TYPE] = 0; } - status = AE_OK; -run_osc_out: - kfree(output.pointer); return status; } @@ -260,7 +205,7 @@ acpi_status pci_osc_control_set(acpi_handle handle, u32 flags) return AE_SUPPORT; } osc_data->ctrlset_buf[OSC_CONTROL_TYPE] |= ctrlset; - status = acpi_run_osc(handle, osc_data->ctrlset_buf); + status = acpi_run_osc(handle, osc_data); if (ACPI_FAILURE (status)) { osc_data->ctrlset_buf[OSC_CONTROL_TYPE] &= ~ctrlset; }