1 files changed, 10 insertions, 3 deletions

diff --git a/drivers/md/bcache/sysfs.h b/drivers/md/bcache/sysfs.h
index 3fe82425859c..0ad2715a884e 100644
--- a/drivers/md/bcache/sysfs.h
+++ b/drivers/md/bcache/sysfs.h
@@ -81,9 +81,16 @@ do {									\
 
 #define sysfs_strtoul_clamp(file, var, min, max)                        \
 do {                                                                    \
-        if (attr == &sysfs_ ## file)                                    \
-                return strtoul_safe_clamp(buf, var, min, max)           \
-                        ?: (ssize_t) size;                              \
+        if (attr == &sysfs_ ## file) {                                  \
+                unsigned long v = 0;                                    \
+                ssize_t ret;                                            \
+                ret = strtoul_safe_clamp(buf, v, min, max);             \
+                if (!ret) {                                             \
+                        var = v;                                        \
+                        return size;                                    \
+                }                                                       \
+                return ret;                                             \
+        }                                                               \
 } while (0)
 
 #define strtoul_or_return(cp)                                           \