UBI: Fix problem in UBI/Linux "compatibility layer"

"down_write_trylock" needs to return 1 instead of 0 for success.
Otherwise copying a block with a read error (e.g. bit-flip on read)
won't work correctly.

Signed-off-by: Stefan Roese <sr@denx.de>

diff --git a/include/ubi_uboot.h b/include/ubi_uboot.h
index 60f6a5f..d2c90a6 100644 (file)
--- a/include/ubi_uboot.h
+++ b/include/ubi_uboot.h
@@ -123,7 +123,7 @@ typedef int wait_queue_head_t;
 #define init_rwsem(...)                        do { } while (0)
 #define down_read(...)                 do { } while (0)
 #define down_write(...)                        do { } while (0)
-#define down_write_trylock(...)                0
+#define down_write_trylock(...)                1
 #define up_read(...)                   do { } while (0)
 #define up_write(...)                  do { } while (0)