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staging: android: check the return value of register_shrinker 

register_shrinker call is made in ashmem_init, it may return error code,
so we need to check it.

Signed-off-by: Xiongwei Song <sxwjean@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Xiongwei Song 2018-01-05 07:34:36 +08:00 committed by Greg Kroah-Hartman
parent 47ac54e877
commit fb02205a18
1 changed files with 7 additions and 1 deletions
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8
drivers/staging/android/ashmem.c
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@ -873,12 +873,18 @@ static int __init ashmem_init(void)
goto out_free2;
}
register_shrinker(&ashmem_shrinker);
ret = register_shrinker(&ashmem_shrinker);
if (ret) {
pr_err("failed to register shrinker!\n");
goto out_demisc;
}
pr_info("initialized\n");
return 0;
out_demisc:
misc_deregister(&ashmem_misc);
out_free2:
kmem_cache_destroy(ashmem_range_cachep);
out_free1: