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author | Steve French <sfrench@us.ibm.com> | 2010-05-13 22:19:32 +0000 |
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committer | Steve French <sfrench@us.ibm.com> | 2010-05-13 22:19:32 +0000 |
commit | baa456331738b4e76a92318b62b354377a30ad80 (patch) | |
tree | 75c828a7c8a9f1b5f7f41b2e53271eafb7e561ef /lib/decompress_unlzo.c | |
parent | aa3e5572c538d753dce11bf93532a75f95d22b40 (diff) | |
parent | 4462dc02842698f173f518c1f5ce79c0fb89395a (diff) | |
download | blackbird-op-linux-baa456331738b4e76a92318b62b354377a30ad80.tar.gz blackbird-op-linux-baa456331738b4e76a92318b62b354377a30ad80.zip |
Merge branch 'master' of /pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
fs/cifs/inode.c
Diffstat (limited to 'lib/decompress_unlzo.c')
-rw-r--r-- | lib/decompress_unlzo.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/lib/decompress_unlzo.c b/lib/decompress_unlzo.c index db521f45626e..bcb3a4bd68ff 100644 --- a/lib/decompress_unlzo.c +++ b/lib/decompress_unlzo.c @@ -97,7 +97,7 @@ STATIC inline int INIT unlzo(u8 *input, int in_len, u32 src_len, dst_len; size_t tmp; u8 *in_buf, *in_buf_save, *out_buf; - int obytes_processed = 0; + int ret = -1; set_error_fn(error_fn); @@ -174,15 +174,22 @@ STATIC inline int INIT unlzo(u8 *input, int in_len, /* decompress */ tmp = dst_len; - r = lzo1x_decompress_safe((u8 *) in_buf, src_len, + + /* When the input data is not compressed at all, + * lzo1x_decompress_safe will fail, so call memcpy() + * instead */ + if (unlikely(dst_len == src_len)) + memcpy(out_buf, in_buf, src_len); + else { + r = lzo1x_decompress_safe((u8 *) in_buf, src_len, out_buf, &tmp); - if (r != LZO_E_OK || dst_len != tmp) { - error("Compressed data violation"); - goto exit_2; + if (r != LZO_E_OK || dst_len != tmp) { + error("Compressed data violation"); + goto exit_2; + } } - obytes_processed += dst_len; if (flush) flush(out_buf, dst_len); if (output) @@ -196,6 +203,7 @@ STATIC inline int INIT unlzo(u8 *input, int in_len, in_buf += src_len; } + ret = 0; exit_2: if (!input) free(in_buf); @@ -203,7 +211,7 @@ exit_1: if (!output) free(out_buf); exit: - return obytes_processed; + return ret; } #define decompress unlzo |