Messages in this thread Patch in this message | | | Date | Fri, 17 Oct 2008 19:25:09 +0800 | From | Zhaolei <> | Subject | [PATCH] Fix debugfs_create_file's error checking method for arch/sh/mm/ |
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Hi,
debugfs_create_file() returns NULL if an error occurs, returns -ENODEV when debugfs is not enabled in the kernel.
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> --- arch/sh/mm/cache-debugfs.c | 6 ++++++ arch/sh/mm/pmb.c | 2 ++ 2 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/arch/sh/mm/cache-debugfs.c b/arch/sh/mm/cache-debugfs.c index 0e189cc..5ba067b 100644 --- a/arch/sh/mm/cache-debugfs.c +++ b/arch/sh/mm/cache-debugfs.c @@ -130,12 +130,18 @@ static int __init cache_debugfs_init(void) dcache_dentry = debugfs_create_file("dcache", S_IRUSR, sh_debugfs_root, (unsigned int *)CACHE_TYPE_DCACHE, &cache_debugfs_fops); + if (!dcache_dentry) + return -ENOMEM; if (IS_ERR(dcache_dentry)) return PTR_ERR(dcache_dentry); icache_dentry = debugfs_create_file("icache", S_IRUSR, sh_debugfs_root, (unsigned int *)CACHE_TYPE_ICACHE, &cache_debugfs_fops); + if (!icache_dentry) { + debugfs_remove(dcache_dentry); + return -ENOMEM; + } if (IS_ERR(icache_dentry)) { debugfs_remove(dcache_dentry); return PTR_ERR(icache_dentry); diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c index cef7276..8424167 100644 --- a/arch/sh/mm/pmb.c +++ b/arch/sh/mm/pmb.c @@ -394,6 +394,8 @@ static int __init pmb_debugfs_init(void) dentry = debugfs_create_file("pmb", S_IFREG | S_IRUGO, sh_debugfs_root, NULL, &pmb_debugfs_fops); + if (!dentry) + return -ENOMEM; if (IS_ERR(dentry)) return PTR_ERR(dentry); -- 1.5.5.3
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