Subject: [PATCH v1 1/3] string: Consolidate yesno() helpers under string.h hood

From: Andy Shevchenko <[email-masked]>
Date: Mon, 15 Feb 2021 16:21:35 +0200

We have already few similar implementation and a lot of code that can benefit
of the yesno() helper.  Consolidate yesno() helpers under string.h hood.

Signed-off-by: Andy Shevchenko <[email-masked]>
---
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c    |  6 +-----
 drivers/gpu/drm/i915/i915_utils.h                    |  6 +-----
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c   | 12 +-----------
 include/linux/string.h                               |  5 +++++
 4 files changed, 8 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index 360952129b6d..7fde4f90e513 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -23,6 +23,7 @@
  *
  */
 
+#include <linux/string.h>
 #include <linux/uaccess.h>
 
 #include <drm/drm_debugfs.h>
@@ -49,11 +50,6 @@ struct dmub_debugfs_trace_entry {
 	uint32_t param1;
 };
 
-static inline const char *yesno(bool v)
-{
-	return v ? "yes" : "no";
-}
-
 /* parse_write_buffer_into_params - Helper function to parse debugfs write buffer into an array
  *
  * Function takes in attributes passed to debugfs write entry
diff --git a/drivers/gpu/drm/i915/i915_utils.h b/drivers/gpu/drm/i915/i915_utils.h
index abd4dcd9f79c..e6da5a951132 100644
--- a/drivers/gpu/drm/i915/i915_utils.h
+++ b/drivers/gpu/drm/i915/i915_utils.h
@@ -27,6 +27,7 @@
 
 #include <linux/list.h>
 #include <linux/overflow.h>
+#include <linux/string.h>
 #include <linux/sched.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
@@ -408,11 +409,6 @@ wait_remaining_ms_from_jiffies(unsigned long timestamp_jiffies, int to_wait_ms)
 #define MBps(x) KBps(1000 * (x))
 #define GBps(x) ((u64)1000 * MBps((x)))
 
-static inline const char *yesno(bool v)
-{
-	return v ? "yes" : "no";
-}
-
 static inline const char *onoff(bool v)
 {
 	return v ? "on" : "off";
diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
index 7d49fd4edc9e..c857d73abbd7 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c
@@ -34,6 +34,7 @@
 
 #include <linux/seq_file.h>
 #include <linux/debugfs.h>
+#include <linux/string.h>
 #include <linux/string_helpers.h>
 #include <linux/sort.h>
 #include <linux/ctype.h>
@@ -2015,17 +2016,6 @@ static const struct file_operations rss_debugfs_fops = {
 /* RSS Configuration.
  */
 
-/* Small utility function to return the strings "yes" or "no" if the supplied
- * argument is non-zero.
- */
-static const char *yesno(int x)
-{
-	static const char *yes = "yes";
-	static const char *no = "no";
-
-	return x ? yes : no;
-}
-
 static int rss_config_show(struct seq_file *seq, void *v)
 {
 	struct adapter *adapter = seq->private;
diff --git a/include/linux/string.h b/include/linux/string.h
index 9521d8cab18e..fd946a5e18c8 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -308,4 +308,9 @@ static __always_inline size_t str_has_prefix(const char *str, const char *prefix
 	return strncmp(str, prefix, len) == 0 ? len : 0;
 }
 
+static inline const char *yesno(bool yes)
+{
+	return yes ? "yes" : "no";
+}
+
 #endif /* _LINUX_STRING_H_ */
-- 
2.30.0