Merge tag 'regmap-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap updates from Mark Brown:
 "The main update this time around is the addition of a standard DT
  binding for specifying the endianness of devices.  This allows drivers
  to support any endianness of device register map without any code,
  useful for configurable IP blocks.

  There's also a few bug fixes that I didn't get round to sending, none
  of them terribly severe or new, and a reduction in size for struct
  regmap"

* tag 'regmap-v3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Fix debugfs-file 'registers' mode
  regmap: fix possible ZERO_SIZE_PTR pointer dereferencing error.
  regmap: debugfs: fix possbile NULL pointer dereference
  regmap: fix NULL pointer dereference in _regmap_write/read
  regmap: fix NULL pointer dereference in regmap_get_val_endian
  regmap: cache: Do not fail silently from regcache_sync calls
  regmap: change struct regmap's internal locks as union
  regmap: Split regmap_get_endian() in two functions
  regmap: of_regmap_get_endian() cleanup
  regmap: Fix DT endianess parsing logic
  regmap: Add explicit dependencies to catch "select" misuse
  regmap: Restore L: linux-kernel@vger.kernel.org entry
  regmap: Add the DT binding documentation for endianness
  regmap: add DT endianness binding support.

1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 5617da6dc898..f1280dc356d0 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -269,8 +269,11 @@ static int regcache_default_sync(struct regmap *map, unsigned int min,
                 map->cache_bypass = 1;
                 ret = _regmap_write(map, reg, val);
                 map->cache_bypass = 0;
-                if (ret)
+                if (ret) {
+                        dev_err(map->dev, "Unable to sync register %#x. %d\n",
+                                reg, ret);
                         return ret;
+                }
                 dev_dbg(map->dev, "Synced register %#x, value %#x\n", reg, val);
         }
 
@@ -615,8 +618,11 @@ static int regcache_sync_block_single(struct regmap *map, void *block,
                 ret = _regmap_write(map, regtmp, val);
 
                 map->cache_bypass = 0;
-                if (ret != 0)
+                if (ret != 0) {
+                        dev_err(map->dev, "Unable to sync register %#x. %d\n",
+                                regtmp, ret);
                         return ret;
+                }
                 dev_dbg(map->dev, "Synced register %#x, value %#x\n",
                         regtmp, val);
         }
@@ -641,6 +647,9 @@ static int regcache_sync_block_raw_flush(struct regmap *map, const void **data,
         map->cache_bypass = 1;
 
         ret = _regmap_raw_write(map, base, *data, count * val_bytes);
+        if (ret)
+                dev_err(map->dev, "Unable to sync registers %#x-%#x. %d\n",
+                        base, cur - map->reg_stride, ret);
 
         map->cache_bypass = 0;