From: Tanya Agarwal <tanyaagarwal25699@xxxxxxxxx>
The static code analysis tool "Coverity Scan" pointed the following
implementation details out for further development considerations:
CID 1309755: Unused value
In sw842_compress: A value assigned to a variable is never used. (CWE-563)
returned_value: Assigning value from add_repeat_template(p, repeat_count)
to ret here, but that stored value is overwritten before it can be used.
Conclusion:
Add error handling for the return value from an add_repeat_template()
call.
Fixes: 2da572c959dd ("lib: add software 842 compression/decompression")
Signed-off-by: Tanya Agarwal <tanyaagarwal25699@xxxxxxxxx>
---
V3: update title and reorganize commit description
V2: add Fixes tag and reword commit description
Coverity Link:
https://scan5.scan.coverity.com/#/project-view/63683/10063?selectedIssue=1309755
lib/842/842_compress.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/lib/842/842_compress.c b/lib/842/842_compress.c
index c02baa4168e1..055356508d97 100644
--- a/lib/842/842_compress.c
+++ b/lib/842/842_compress.c
@@ -532,6 +532,8 @@ int sw842_compress(const u8 *in, unsigned int ilen,
}
if (repeat_count) {
ret = add_repeat_template(p, repeat_count);
+ if (ret)
+ return ret;
repeat_count = 0;
if (next == last) /* reached max repeat bits */
goto repeat;
--
2.39.5
