* [PATCH] lib/decompress: Set the compressor name to NULL on error
@ 2015-07-15 6:44 Aneesh Kumar K.V
0 siblings, 0 replies; only message in thread
From: Aneesh Kumar K.V @ 2015-07-15 6:44 UTC (permalink / raw)
To: Andrew Morton, H. Peter Anvin; +Cc: linux-kernel, Aneesh Kumar K.V
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>
---
lib/decompress.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/decompress.c b/lib/decompress.c
index 528ff932d8e4..62696dff5730 100644
--- a/lib/decompress.c
+++ b/lib/decompress.c
@@ -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]);
--
2.1.4
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