These changes are a raw update to a vanilla kernel 4.1.10, with the

[kvmfornfv.git] / kernel / drivers / block / zram / zcomp.c

diff --git a/kernel/drivers/block/zram/zcomp.c b/kernel/drivers/block/zram/zcomp.c
index f1ff39a..54d946a 100644 (file)
--- a/kernel/drivers/block/zram/zcomp.c
+++ b/kernel/drivers/block/zram/zcomp.c
@@ -325,12 +325,14 @@ void zcomp_destroy(struct zcomp *comp)
  * allocate new zcomp and initialize it. return compressing
  * backend pointer or ERR_PTR if things went bad. ERR_PTR(-EINVAL)
  * if requested algorithm is not supported, ERR_PTR(-ENOMEM) in
- * case of allocation error.
+ * case of allocation error, or any other error potentially
+ * returned by functions zcomp_strm_{multi,single}_create.
  */
 struct zcomp *zcomp_create(const char *compress, int max_strm)
 {
        struct zcomp *comp;
        struct zcomp_backend *backend;
+       int error;
 
        backend = find_backend(compress);
        if (!backend)
@@ -342,12 +344,12 @@ struct zcomp *zcomp_create(const char *compress, int max_strm)
 
        comp->backend = backend;
        if (max_strm > 1)
-               zcomp_strm_multi_create(comp, max_strm);
+               error = zcomp_strm_multi_create(comp, max_strm);
        else
-               zcomp_strm_single_create(comp);
-       if (!comp->stream) {
+               error = zcomp_strm_single_create(comp);
+       if (error) {
                kfree(comp);
-               return ERR_PTR(-ENOMEM);
+               return ERR_PTR(error);
        }
        return comp;
 }