Merge 80cb08efce94fb197b05bc1c9dfaeb72a765eb96 on remote branch

Change-Id: I270427b762a19e22283edf694d7ca2585a228ad1

4 files changed, 27 insertions, 5 deletions

diff --git a/include/linux/compiler-gcc.h b/include/linux/compiler-gcc.h
index 143d40e8a1ea..af8b4a879934 100644
--- a/include/linux/compiler-gcc.h
+++ b/include/linux/compiler-gcc.h
@@ -207,6 +207,15 @@
 
 #if GCC_VERSION >= 40500
 /*
+ * calling noreturn functions, __builtin_unreachable() and __builtin_trap()
+ * confuse the stack allocation in gcc, leading to overly large stack
+ * frames, see https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82365
+ *
+ * Adding an empty inline assembly before it works around the problem
+ */
+#define barrier_before_unreachable() asm volatile("")
+
+/*
  * Mark a position in code as unreachable.  This can be used to
  * suppress control flow warnings after asm blocks that transfer
  * control elsewhere.
@@ -215,7 +224,11 @@
  * this in the preprocessor, but we can live with this because they're
  * unreleased.  Really, we need to have autoconf for the kernel.
  */
-#define unreachable() __builtin_unreachable()
+#define unreachable() \
+	do {					\
+		barrier_before_unreachable();	\
+		__builtin_unreachable();	\
+	} while (0)
 
 /* Mark a function definition as prohibited from being cloned. */
 #define __noclone	__attribute__((__noclone__, __optimize__("no-tracer")))
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 0db1fa621d8a..ed772311ec1f 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -175,6 +175,11 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
 # define barrier_data(ptr) barrier()
 #endif
 
+/* workaround for GCC PR82365 if needed */
+#ifndef barrier_before_unreachable
+# define barrier_before_unreachable() do { } while (0)
+#endif
+
 /* Unreachable code */
 #ifndef unreachable
 # define unreachable() do { } while (1)
diff --git a/include/linux/diagchar.h b/include/linux/diagchar.h
index 3ae123acbaaa..605f9731fe5d 100644
--- a/include/linux/diagchar.h
+++ b/include/linux/diagchar.h
@@ -145,7 +145,7 @@ the appropriate macros. */
 /* This needs to be modified manually now, when we add
  a new RANGE of SSIDs to the msg_mask_tbl */
 #define MSG_MASK_TBL_CNT		26
-#define APPS_EVENT_LAST_ID		0xCA7
+#define APPS_EVENT_LAST_ID		0xCAA
 
 #define MSG_SSID_0			0
 #define MSG_SSID_0_LAST			130
@@ -180,7 +180,7 @@ the appropriate macros. */
 #define MSG_SSID_15			8000
 #define MSG_SSID_15_LAST		8000
 #define MSG_SSID_16			8500
-#define MSG_SSID_16_LAST		8531
+#define MSG_SSID_16_LAST		8532
 #define MSG_SSID_17			9000
 #define MSG_SSID_17_LAST		9008
 #define MSG_SSID_18			9500
@@ -770,7 +770,8 @@ static const uint32_t msg_bld_masks_16[] = {
 	MSG_LVL_LOW | MSG_LVL_MED | MSG_LVL_HIGH | MSG_LVL_ERROR |
 		MSG_LVL_FATAL,
 	MSG_LVL_MED,
-	MSG_LVL_MED
+	MSG_LVL_MED,
+	MSG_LVL_LOW
 };
 
 static const uint32_t msg_bld_masks_17[] =  {
@@ -910,7 +911,7 @@ static const uint32_t msg_bld_masks_25[] = {
 /* LOG CODES */
 static const uint32_t log_code_last_tbl[] = {
 	0x0,	/* EQUIP ID 0 */
-	0x1C94,	/* EQUIP ID 1 */
+	0x1C9A,	/* EQUIP ID 1 */
 	0x0,	/* EQUIP ID 2 */
 	0x0,	/* EQUIP ID 3 */
 	0x4910,	/* EQUIP ID 4 */
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index e7a018eaf3a2..017fced60242 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -1,10 +1,13 @@
 #ifndef __LINUX_SWIOTLB_H
 #define __LINUX_SWIOTLB_H
 
+#include <linux/dma-direction.h>
+#include <linux/init.h>
 #include <linux/types.h>
 
 struct device;
 struct dma_attrs;
+struct page;
 struct scatterlist;
 
 extern int swiotlb_force;