diff options
Diffstat (limited to 'drivers/acpi/resources/rsutils.c')
| -rw-r--r-- | drivers/acpi/resources/rsutils.c | 46 |
1 files changed, 27 insertions, 19 deletions
diff --git a/drivers/acpi/resources/rsutils.c b/drivers/acpi/resources/rsutils.c index 25b5aedd6612..c5f7014929b4 100644 --- a/drivers/acpi/resources/rsutils.c +++ b/drivers/acpi/resources/rsutils.c @@ -205,6 +205,7 @@ acpi_rs_set_resource_length(acpi_rsdesc_size total_length, /* Length is stored differently for large and small descriptors */ if (aml->small_header.descriptor_type & ACPI_RESOURCE_NAME_LARGE) { + /* Large descriptor -- bytes 1-2 contain the 16-bit length */ ACPI_MOVE_16_TO_16(&aml->large_header.resource_length, @@ -328,6 +329,7 @@ acpi_rs_get_resource_source(acpi_rs_length resource_length, * we add 1 to the minimum length. */ if (total_length > (acpi_rsdesc_size) (minimum_length + 1)) { + /* Get the resource_source_index */ resource_source->index = aml_resource_source[0]; @@ -351,16 +353,20 @@ acpi_rs_get_resource_source(acpi_rs_length resource_length, * Zero the entire area of the buffer. */ total_length = + (u32) ACPI_ROUND_UP_to_32_bITS(ACPI_STRLEN - ((char *)&aml_resource_source[1]) + - 1); + (ACPI_CAST_PTR + (char, + &aml_resource_source[1])) + 1); + ACPI_MEMSET(resource_source->string_ptr, 0, total_length); /* Copy the resource_source string to the destination */ resource_source->string_length = acpi_rs_strcpy(resource_source->string_ptr, - (char *)&aml_resource_source[1]); + ACPI_CAST_PTR(char, + &aml_resource_source[1])); return ((acpi_rs_length) total_length); } @@ -405,6 +411,7 @@ acpi_rs_set_resource_source(union aml_resource * aml, /* Non-zero string length indicates presence of a resource_source */ if (resource_source->string_length) { + /* Point to the end of the AML descriptor */ aml_resource_source = ACPI_ADD_PTR(u8, aml, minimum_length); @@ -415,7 +422,7 @@ acpi_rs_set_resource_source(union aml_resource * aml, /* Copy the resource_source string */ - ACPI_STRCPY((char *)&aml_resource_source[1], + ACPI_STRCPY(ACPI_CAST_PTR(char, &aml_resource_source[1]), resource_source->string_ptr); /* @@ -435,9 +442,9 @@ acpi_rs_set_resource_source(union aml_resource * aml, * * FUNCTION: acpi_rs_get_prt_method_data * - * PARAMETERS: Handle - a handle to the containing object - * ret_buffer - a pointer to a buffer structure for the - * results + * PARAMETERS: Handle - Handle to the containing object + * ret_buffer - Pointer to a buffer structure for the + * results * * RETURN: Status * @@ -483,9 +490,9 @@ acpi_rs_get_prt_method_data(acpi_handle handle, struct acpi_buffer * ret_buffer) * * FUNCTION: acpi_rs_get_crs_method_data * - * PARAMETERS: Handle - a handle to the containing object - * ret_buffer - a pointer to a buffer structure for the - * results + * PARAMETERS: Handle - Handle to the containing object + * ret_buffer - Pointer to a buffer structure for the + * results * * RETURN: Status * @@ -532,9 +539,9 @@ acpi_rs_get_crs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer) * * FUNCTION: acpi_rs_get_prs_method_data * - * PARAMETERS: Handle - a handle to the containing object - * ret_buffer - a pointer to a buffer structure for the - * results + * PARAMETERS: Handle - Handle to the containing object + * ret_buffer - Pointer to a buffer structure for the + * results * * RETURN: Status * @@ -583,10 +590,10 @@ acpi_rs_get_prs_method_data(acpi_handle handle, struct acpi_buffer *ret_buffer) * * FUNCTION: acpi_rs_get_method_data * - * PARAMETERS: Handle - a handle to the containing object + * PARAMETERS: Handle - Handle to the containing object * Path - Path to method, relative to Handle - * ret_buffer - a pointer to a buffer structure for the - * results + * ret_buffer - Pointer to a buffer structure for the + * results * * RETURN: Status * @@ -634,9 +641,9 @@ acpi_rs_get_method_data(acpi_handle handle, * * FUNCTION: acpi_rs_set_srs_method_data * - * PARAMETERS: Handle - a handle to the containing object - * in_buffer - a pointer to a buffer structure of the - * parameter + * PARAMETERS: Handle - Handle to the containing object + * in_buffer - Pointer to a buffer structure of the + * parameter * * RETURN: Status * @@ -696,6 +703,7 @@ acpi_rs_set_srs_method_data(acpi_handle handle, struct acpi_buffer *in_buffer) status = acpi_ns_evaluate_relative(METHOD_NAME__SRS, &info); if (ACPI_SUCCESS(status)) { + /* Delete any return object (especially if implicit_return is enabled) */ if (info.return_object) { |