linux-kernel - [PATCH v3 4/5] drm/print: move conditional deref into macro defn

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20210714175138.319514-5-jim.cromie@gmail.com>
Date:   Wed, 14 Jul 2021 11:51:37 -0600
From:   Jim Cromie <jim.cromie@...il.com>
To:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>,
        Zhi Wang <zhi.a.wang@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        intel-gvt-dev@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org
Cc:     jbaron@...mai.com, Jim Cromie <jim.cromie@...il.com>
Subject: [PATCH v3 4/5] drm/print: move conditional deref into macro defn

commit 7911902129a8 ("drm/print: Handle potentially NULL drm_devices
in drm_dbg_*") added a maybe(deref) to 6 macro invocations of
drm_dev_dbg().

Commit 01ff672190bd("drm: RFC add choice to use dynamic debug in
drm-debug") then renamed that fn to _drm_dev_dbg(), and redefined
drm_dev_dbg() as a macro.

That new macro can do the maybe(deref), so the ~9 callers dont have to.

no functional changes. small word-count reduction.

Signed-off-by: Jim Cromie <jim.cromie@...il.com>
---
 include/drm/drm_print.h | 27 +++++++++++++--------------
 1 file changed, 13 insertions(+), 14 deletions(-)

diff --git a/include/drm/drm_print.h b/include/drm/drm_print.h
index 499fa0b35200..573b513e7836 100644
--- a/include/drm/drm_print.h
+++ b/include/drm/drm_print.h
@@ -326,8 +326,8 @@ enum drm_debug_category {
  */
 #define __drm_dbg(cls, fmt, ...)			\
 	___drm_dbg(cls, fmt, ##__VA_ARGS__)
-#define drm_dev_dbg(dev, cls, fmt, ...)			\
-	_drm_dev_dbg(dev, cls, fmt, ##__VA_ARGS__)
+#define drm_dev_dbg(drm, cls, fmt, ...)			\
+	_drm_dev_dbg((drm) ? (drm)->dev : NULL, cls, fmt, ##__VA_ARGS__)
 
 #define cDRM_UT_CORE	DRM_UT_CORE
 #define cDRM_UT_DRIVER	DRM_UT_DRIVER
@@ -488,25 +488,25 @@ void _drm_dev_dbg(const struct device *dev, enum drm_debug_category category,
 
 
 #define drm_dbg_core(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_CORE, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_CORE, fmt, ##__VA_ARGS__)
 #define drm_dbg(drm, fmt, ...)						\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_DRIVER, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_DRIVER, fmt, ##__VA_ARGS__)
 #define drm_dbg_kms(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_KMS, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_KMS, fmt, ##__VA_ARGS__)
 #define drm_dbg_prime(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_PRIME, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_PRIME, fmt, ##__VA_ARGS__)
 #define drm_dbg_atomic(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_ATOMIC, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_ATOMIC, fmt, ##__VA_ARGS__)
 #define drm_dbg_vbl(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_VBL, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_VBL, fmt, ##__VA_ARGS__)
 #define drm_dbg_state(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_STATE, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_STATE, fmt, ##__VA_ARGS__)
 #define drm_dbg_lease(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_LEASE, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_LEASE, fmt, ##__VA_ARGS__)
 #define drm_dbg_dp(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_DP, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_DP, fmt, ##__VA_ARGS__)
 #define drm_dbg_drmres(drm, fmt, ...)					\
-	drm_dev_dbg((drm) ? (drm)->dev : NULL, cDRM_UT_DRMRES, fmt, ##__VA_ARGS__)
+	drm_dev_dbg(drm, cDRM_UT_DRMRES, fmt, ##__VA_ARGS__)
 
 
 /*
@@ -578,8 +578,7 @@ void __drm_err(const char *format, ...);
 	const struct drm_device *drm_ = (drm);				\
 									\
 	if (drm_debug_enabled(DRM_UT) && __ratelimit(&rs_))		\
-		drm_dev_dbg((drm_) ? (drm_)->dev : NULL,		\
-			    cDRM_UT, fmt, ##__VA_ARGS__);		\
+		drm_dev_dbg(drm_, cDRM_UT, fmt, ##__VA_ARGS__);		\
 })
 
 #define drm_dbg_kms_ratelimited(drm, fmt, ...) \
-- 
2.31.1