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lib/decompress: set the compressor name to NULL on error

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Without this we end up using the previous name of the compressor in the
loop in unpack_rootfs.  For example we get errors like "compression
method gzip not configured" even when we have CONFIG_DECOMPRESS_GZIP
enabled.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Aneesh Kumar K.V 2015-07-17 16:24:26 -07:00 committed by Linus Torvalds
parent d56e84b406
commit 5a09e6ce90
1 changed files with 4 additions and 1 deletions
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5
lib/decompress.c
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@ -59,8 +59,11 @@ decompress_fn __init decompress_method(const unsigned char *inbuf, long len,
{
const struct compress_format *cf;
if (len < 2)
if (len < 2) {
if (name)
*name = NULL;
return NULL; /* Need at least this much... */
}
pr_debug("Compressed data magic: %#.2x %#.2x\n", inbuf[0], inbuf[1]);