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+# Warning Analysis Report
+
+### General
+
+**Warning Type:** Wparentheses-equality<br/>
+**Warning Explanation:**
+```
+drivers/crypto/cavium/zip/zip_regs.h:820:15: warning: equality comparison with
+      extraneous parentheses [-Wparentheses-equality]
+        if (((param1 == 0)))
+              ~~~~~~~^~~~
+drivers/crypto/cavium/zip/zip_regs.h:820:15: note: remove extraneous parentheses
+      around the comparison to silence this warning
+        if (((param1 == 0)))
+            ~        ^    ~
+drivers/crypto/cavium/zip/zip_regs.h:820:15: note: use '=' to turn this equality
+      comparison into an assignment
+        if (((param1 == 0)))
+```
+### History
+
+**Date:** 2017-02-15<br/>
+**Version:** v4.12-rc1<br/>
+**Author:** Mahipal Challa<br/>
+Patch: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=640035a2dc5534b49cd64580e41874b71f131a1c
+
+### Warning Assessment
+
+**File Location:** drivers/crypto/cavium/zip/zip_regs.h
+```
+static inline u64 ZIP_MSIX_PBAX(u64 param1)
+{
+ if (((param1 == 0)))
+ return 0x0000838000FF0000ull;
+ pr_err("ZIP_MSIX_PBAX: %llu\n", param1);
+ return 0;
+}
+```
+The warning is true. There are few other places in the same file, where
+extra parentheses is used. One of them is in ZIP_MSIX_VECX_ADDR
+function.
+```
+static inline u64 ZIP_MSIX_VECX_ADDR(u64 param1)
+{
+ if (((param1 <= 17)))
+ return 0x0000838000F00000ull + (param1 & 31) * 0x10ull;
+ pr_err("ZIP_MSIX_VECX_ADDR: %llu\n", param1);
+ return 0;
+}
+```
+### Solution
+
+Use the following Coccinelle script to remove extra parentheses.
+```
+@@
+identifier i;
+constant c;
+@@
+(
+-((i == c))
++i == c
+|
+-((i <= c))
++i <= c
+)
+```
+### Accepted Patch 
+Commit Id: 	5b0aa2556<br/>
+Link: https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=5b0aa2556ec9ea98f98e2a802818f75827896d25