Merge branch 'linux-linaro-lsk-v3.14' into linux-linaro-lsk-v3.14-rtlsk-v3.14-16.03-rtlsk-v3.14-16.02-rtlsk-v3.14-16.01-rtlsk-v3.14-15.12-rtlsk-v3.14-15.11-rtlsk-v3.14-15.10-rtlsk-v3.14-15.09-rtlinux-linaro-lsk-v3.14-rt

* linux-linaro-lsk-v3.14: (66 commits)
  Linux 3.14.52
  arm64: KVM: Fix host crash when injecting a fault into a 32bit guest
  SCSI: Fix NULL pointer dereference in runtime PM
  arm64/mm: Remove hack in mmap randomize layout
  crypto: caam - fix memory corruption in ahash_final_ctx
  regmap: regcache-rbtree: Clean new present bits on present bitmap resize
  libfc: Fix fc_fcp_cleanup_each_cmd()
  libfc: Fix fc_exch_recv_req() error path
  drm/vmwgfx: Fix execbuf locking issues
  drm/radeon: add new OLAND pci id
  EDAC, ppc4xx: Access mci->csrows array elements properly
  localmodconfig: Use Kbuild files too
  dm thin metadata: delete btrees when releasing metadata snapshot
  perf: Fix PERF_EVENT_IOC_PERIOD migration race
  perf: Fix fasync handling on inherited events
  xen-blkfront: don't add indirect pages to list when !feature_persistent
  mm/hwpoison: fix page refcount of unknown non LRU page
  ipc/sem.c: update/correct memory barriers
  ipc,sem: fix use after free on IPC_RMID after a task using same semaphore set exits
  arm64: el0_dbg does not set link reg for return to user path, breaks debug
  ...

1 files changed, 16 insertions, 8 deletions

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 4551efd28f8d..399af1e9f6e1 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -2452,6 +2452,9 @@ static int of_dev_hwmod_lookup(struct device_node *np,
  * registers.  This address is needed early so the OCP registers that
  * are part of the device's address space can be ioremapped properly.
  *
+ * If SYSC access is not needed, the registers will not be remapped
+ * and non-availability of MPU access is not treated as an error.
+ *
  * Returns 0 on success, -EINVAL if an invalid hwmod is passed, and
  * -ENXIO on absent or invalid register target address space.
  */
@@ -2466,6 +2469,11 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
 
 	_save_mpu_port_index(oh);
 
+	/* if we don't need sysc access we don't need to ioremap */
+	if (!oh->class->sysc)
+		return 0;
+
+	/* we can't continue without MPU PORT if we need sysc access */
 	if (oh->_int_flags & _HWMOD_NO_MPU_PORT)
 		return -ENXIO;
 
@@ -2475,8 +2483,10 @@ static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
 			 oh->name);
 
 		/* Extract the IO space from device tree blob */
-		if (!np)
+		if (!np) {
+			pr_err("omap_hwmod: %s: no dt node\n", oh->name);
 			return -ENXIO;
+		}
 
 		va_start = of_iomap(np, index + oh->mpu_rt_idx);
 	} else {
@@ -2535,13 +2545,11 @@ static int __init _init(struct omap_hwmod *oh, void *data)
 				oh->name, np->name);
 	}
 
-	if (oh->class->sysc) {
-		r = _init_mpu_rt_base(oh, NULL, index, np);
-		if (r < 0) {
-			WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
-			     oh->name);
-			return 0;
-		}
+	r = _init_mpu_rt_base(oh, NULL, index, np);
+	if (r < 0) {
+		WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
+		     oh->name);
+		return 0;
 	}
 
 	r = _init_clocks(oh, NULL);