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authorBob Moore <robert.moore@intel.com>2018-10-03 11:45:34 -0700
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-10-04 09:06:27 +0200
commitf99b89eefeb635a675b2883fcd2148b7cfc77319 (patch)
tree8ca3940f4656cd78433052f399002ace3c45d8b8 /include/acpi
parent17b57b1883c1285f3d0dc2266e8f79286a7bef38 (diff)
downloadlinux-f99b89eefeb635a675b2883fcd2148b7cfc77319.tar.bz2
ACPICA: Update for generic_serial_bus and attrib_raw_process_bytes protocol
Cleanup for this write-then-read protocol. The ACPI specification is rather unclear for the entire generic_serial_bus, but this change works correctly on the Surface 3. Reported-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acconfig.h3
-rw-r--r--include/acpi/acexcep.h9
2 files changed, 9 insertions, 3 deletions
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index e6964e97acdd..0f875ae68c68 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -176,8 +176,9 @@
/* SMBus, GSBus and IPMI bidirectional buffer size */
#define ACPI_SMBUS_BUFFER_SIZE 34
-#define ACPI_GSBUS_BUFFER_SIZE 34
#define ACPI_IPMI_BUFFER_SIZE 66
+#define ACPI_GSBUS_BUFFER_SIZE 34 /* Not clear if this is needed */
+#define ACPI_MAX_GSBUS_BUFFER_SIZE 255 /* Worst-case bidirectional buffer */
/* _sx_d and _sx_w control methods */
diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h
index 856c56ef0143..09f46050961f 100644
--- a/include/acpi/acexcep.h
+++ b/include/acpi/acexcep.h
@@ -171,8 +171,10 @@ struct acpi_exception_info {
#define AE_AML_LOOP_TIMEOUT EXCEP_AML (0x0021)
#define AE_AML_UNINITIALIZED_NODE EXCEP_AML (0x0022)
#define AE_AML_TARGET_TYPE EXCEP_AML (0x0023)
+#define AE_AML_PROTOCOL EXCEP_AML (0x0024)
+#define AE_AML_BUFFER_LENGTH EXCEP_AML (0x0025)
-#define AE_CODE_AML_MAX 0x0023
+#define AE_CODE_AML_MAX 0x0025
/*
* Internal exceptions used for control
@@ -347,7 +349,10 @@ static const struct acpi_exception_info acpi_gbl_exception_names_aml[] = {
EXCEP_TXT("AE_AML_UNINITIALIZED_NODE",
"A namespace node is uninitialized or unresolved"),
EXCEP_TXT("AE_AML_TARGET_TYPE",
- "A target operand of an incorrect type was encountered")
+ "A target operand of an incorrect type was encountered"),
+ EXCEP_TXT("AE_AML_PROTOCOL", "Violation of a fixed ACPI protocol"),
+ EXCEP_TXT("AE_AML_BUFFER_LENGTH",
+ "The length of the buffer is invalid/incorrect")
};
static const struct acpi_exception_info acpi_gbl_exception_names_ctrl[] = {