For structure types defined in the same file or local header files, find
top-level static structure declarations that have the following
properties:
1. Never reassigned.
2. Address never taken
3. Not passed to a top-level macro call
4. No pointer or array-typed field passed to a function or stored in a
variable.
Declare structures having all of these properties as const.

Done using Coccinelle.
Based on a suggestion by Joe Perches <j...@perches.com>.

Signed-off-by: Julia Lawall <julia.law...@lip6.fr>

---
The semantic patch seems too long for a commit log, but is in the cover
letter.

 drivers/net/wireless/ath/dfs_pattern_detector.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/dfs_pattern_detector.c 
b/drivers/net/wireless/ath/dfs_pattern_detector.c
index 2f8136d..4100ffd 100644
--- a/drivers/net/wireless/ath/dfs_pattern_detector.c
+++ b/drivers/net/wireless/ath/dfs_pattern_detector.c
@@ -338,7 +338,7 @@ static bool dpd_set_domain(struct dfs_pattern_detector *dpd,
        return true;
 }
 
-static struct dfs_pattern_detector default_dpd = {
+static const struct dfs_pattern_detector default_dpd = {
        .exit           = dpd_exit,
        .set_dfs_domain = dpd_set_domain,
        .add_pulse      = dpd_add_pulse,

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