diff options
Diffstat (limited to 'drivers/md/bcache/sysfs.h')
| -rw-r--r-- | drivers/md/bcache/sysfs.h | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/md/bcache/sysfs.h b/drivers/md/bcache/sysfs.h index 3fe82425859c..215df32f567b 100644 --- a/drivers/md/bcache/sysfs.h +++ b/drivers/md/bcache/sysfs.h @@ -79,11 +79,28 @@ do { \ return strtoul_safe(buf, var) ?: (ssize_t) size; \ } while (0) +#define sysfs_strtoul_bool(file, var) \ +do { \ + if (attr == &sysfs_ ## file) { \ + unsigned long v = strtoul_or_return(buf); \ + \ + var = v ? 1 : 0; \ + return size; \ + } \ +} while (0) + #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) \ |