[PATCH] drm: drm_err: Remove unnecessary __func__ argument

[Joe Perches]

Removing the unnecessary drm_err __func__ argument by using
the equivalent %pf and __builtin_return_address(0) makes the
code smaller for every use of the DRM_ERROR macro.

For instance: (allmodconfig)

$ size drivers/gpu/drm/i915/i915.o*
   text    data     bss     dec     hex filename
 922447  193257  296736 1412440  158d58 drivers/gpu/drm/i915/i915.o.new
 928111  193257  296736 1418104  15a378 drivers/gpu/drm/i915/i915.o.old

Signed-off-by: Joe Perches <joe at perches.com>
---
 drivers/gpu/drm/drm_drv.c | 5 +++--
 include/drm/drmP.h        | 8 ++++----
 2 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 9f0e1b9..e9263d9 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -68,7 +68,7 @@ static struct idr drm_minors_idr;
 struct class *drm_class;
 static struct dentry *drm_debugfs_root;

-void drm_err(const char *func, const char *format, ...)
+void drm_err(const char *format, ...)
 {
        struct va_format vaf;
        va_list args;
@@ -78,7 +78,8 @@ void drm_err(const char *func, const char *format, ...)
        vaf.fmt = format;
        vaf.va = &args;

-       printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf);
+       printk(KERN_ERR "[" DRM_NAME ":%pf] *ERROR* %pV",
+              __builtin_return_address(0), &vaf);

        va_end(args);
 }
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index ca374ac..5e9ff52 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -125,8 +125,8 @@ struct reservation_object;
 extern __printf(2, 3)
 void drm_ut_debug_printk(const char *function_name,
                         const char *format, ...);
-extern __printf(2, 3)
-void drm_err(const char *func, const char *format, ...);
+extern __printf(1, 2)
+void drm_err(const char *format, ...);

 /***********************************************************************/
 /** \name DRM template customization defaults */
@@ -168,7 +168,7 @@ void drm_err(const char *func, const char *format, ...);
  * \param arg arguments
  */
 #define DRM_ERROR(fmt, ...)                            \
-       drm_err(__func__, fmt, ##__VA_ARGS__)
+       drm_err(fmt, ##__VA_ARGS__)

 /**
  * Rate limited error output.  Like DRM_ERROR() but won't flood the log.
@@ -183,7 +183,7 @@ void drm_err(const char *func, const char *format, ...);
                                      DEFAULT_RATELIMIT_BURST);         \
                                                                        \
        if (__ratelimit(&_rs))                                          \
-               drm_err(__func__, fmt, ##__VA_ARGS__);                  \
+               drm_err(fmt, ##__VA_ARGS__);                            \
 })

 #define DRM_INFO(fmt, ...)                             \