diff options
| -rw-r--r-- | fs/pstore/blk.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/pstore/blk.c b/fs/pstore/blk.c index 4bb8a344957a..eca83820fb5d 100644 --- a/fs/pstore/blk.c +++ b/fs/pstore/blk.c @@ -114,8 +114,22 @@ static int __register_pstore_device(struct pstore_device_info *dev) lockdep_assert_held(&pstore_blk_lock); - if (!dev || !dev->total_size || !dev->read || !dev->write) + if (!dev) { + pr_err("NULL device info\n"); return -EINVAL; + } + if (!dev->total_size) { + pr_err("zero sized device\n"); + return -EINVAL; + } + if (!dev->read) { + pr_err("no read handler for device\n"); + return -EINVAL; + } + if (!dev->write) { + pr_err("no write handler for device\n"); + return -EINVAL; + } /* someone already registered before */ if (pstore_zone_info) |