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From: Jani Nikula <jani.nikula@intel.com>
To: dri-devel@lists.freedesktop.org
Cc: Jani Nikula <jani.nikula@intel.com>,
	intel-gfx@lists.freedesktop.org,
	Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Subject: [PATCH v2 4/6] drm/edid: use a temp variable for sads to drop one level of dereferences
Date: Tue, 31 Oct 2023 12:16:41 +0200	[thread overview]
Message-ID: <b6e2f295ae5491c2bb0f528508f0f5fca921dc77.1698747331.git.jani.nikula@intel.com> (raw)
In-Reply-To: <cover.1698747331.git.jani.nikula@intel.com>

Use a temporary variable struct cea_sad *, instead of using struct
cea_sad ** directly with the double dereferences. It's arguably easier
on the eyes, and drops a set of parenthesis too.

Cc: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/drm_edid.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 8be0f26702b5..c0d50082b504 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -5594,7 +5594,7 @@ static void drm_edid_to_eld(struct drm_connector *connector,
 }
 
 static int _drm_edid_to_sad(const struct drm_edid *drm_edid,
-			    struct cea_sad **sads)
+			    struct cea_sad **psads)
 {
 	const struct cea_db *db;
 	struct cea_db_iter iter;
@@ -5603,19 +5603,21 @@ static int _drm_edid_to_sad(const struct drm_edid *drm_edid,
 	cea_db_iter_edid_begin(drm_edid, &iter);
 	cea_db_iter_for_each(db, &iter) {
 		if (cea_db_tag(db) == CTA_DB_AUDIO) {
+			struct cea_sad *sads;
 			int j;
 
 			count = cea_db_payload_len(db) / 3; /* SAD is 3B */
-			*sads = kcalloc(count, sizeof(**sads), GFP_KERNEL);
-			if (!*sads)
+			sads = kcalloc(count, sizeof(*sads), GFP_KERNEL);
+			*psads = sads;
+			if (!sads)
 				return -ENOMEM;
 			for (j = 0; j < count; j++) {
 				const u8 *sad = &db->data[j * 3];
 
-				(*sads)[j].format = (sad[0] & 0x78) >> 3;
-				(*sads)[j].channels = sad[0] & 0x7;
-				(*sads)[j].freq = sad[1] & 0x7F;
-				(*sads)[j].byte2 = sad[2];
+				sads[j].format = (sad[0] & 0x78) >> 3;
+				sads[j].channels = sad[0] & 0x7;
+				sads[j].freq = sad[1] & 0x7F;
+				sads[j].byte2 = sad[2];
 			}
 			break;
 		}
-- 
2.39.2


WARNING: multiple messages have this Message-ID (diff)
From: Jani Nikula <jani.nikula@intel.com>
To: dri-devel@lists.freedesktop.org
Cc: Jani Nikula <jani.nikula@intel.com>, intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH v2 4/6] drm/edid: use a temp variable for sads to drop one level of dereferences
Date: Tue, 31 Oct 2023 12:16:41 +0200	[thread overview]
Message-ID: <b6e2f295ae5491c2bb0f528508f0f5fca921dc77.1698747331.git.jani.nikula@intel.com> (raw)
In-Reply-To: <cover.1698747331.git.jani.nikula@intel.com>

Use a temporary variable struct cea_sad *, instead of using struct
cea_sad ** directly with the double dereferences. It's arguably easier
on the eyes, and drops a set of parenthesis too.

Cc: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/drm_edid.c | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 8be0f26702b5..c0d50082b504 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -5594,7 +5594,7 @@ static void drm_edid_to_eld(struct drm_connector *connector,
 }
 
 static int _drm_edid_to_sad(const struct drm_edid *drm_edid,
-			    struct cea_sad **sads)
+			    struct cea_sad **psads)
 {
 	const struct cea_db *db;
 	struct cea_db_iter iter;
@@ -5603,19 +5603,21 @@ static int _drm_edid_to_sad(const struct drm_edid *drm_edid,
 	cea_db_iter_edid_begin(drm_edid, &iter);
 	cea_db_iter_for_each(db, &iter) {
 		if (cea_db_tag(db) == CTA_DB_AUDIO) {
+			struct cea_sad *sads;
 			int j;
 
 			count = cea_db_payload_len(db) / 3; /* SAD is 3B */
-			*sads = kcalloc(count, sizeof(**sads), GFP_KERNEL);
-			if (!*sads)
+			sads = kcalloc(count, sizeof(*sads), GFP_KERNEL);
+			*psads = sads;
+			if (!sads)
 				return -ENOMEM;
 			for (j = 0; j < count; j++) {
 				const u8 *sad = &db->data[j * 3];
 
-				(*sads)[j].format = (sad[0] & 0x78) >> 3;
-				(*sads)[j].channels = sad[0] & 0x7;
-				(*sads)[j].freq = sad[1] & 0x7F;
-				(*sads)[j].byte2 = sad[2];
+				sads[j].format = (sad[0] & 0x78) >> 3;
+				sads[j].channels = sad[0] & 0x7;
+				sads[j].freq = sad[1] & 0x7F;
+				sads[j].byte2 = sad[2];
 			}
 			break;
 		}
-- 
2.39.2


  parent reply	other threads:[~2023-10-31 10:17 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-10-31 10:16 [PATCH v2 0/6] drm/edid: split out drm_eld.[ch], add some SAD helpers Jani Nikula
2023-10-31 10:16 ` [Intel-gfx] " Jani Nikula
2023-10-31 10:16 ` [PATCH v2 1/6] drm/edid: split out drm_eld.h from drm_edid.h Jani Nikula
2023-10-31 10:16   ` [Intel-gfx] " Jani Nikula
2023-10-31 10:16 ` [PATCH v2 2/6] drm/eld: replace uint8_t with u8 Jani Nikula
2023-10-31 10:16   ` [Intel-gfx] " Jani Nikula
2023-10-31 10:16 ` [PATCH v2 3/6] drm/edid: include drm_eld.h only where required Jani Nikula
2023-10-31 10:16   ` [Intel-gfx] " Jani Nikula
2023-10-31 10:16 ` Jani Nikula [this message]
2023-10-31 10:16   ` [Intel-gfx] [PATCH v2 4/6] drm/edid: use a temp variable for sads to drop one level of dereferences Jani Nikula
2023-10-31 10:16 ` [PATCH v2 5/6] drm/edid: add helpers to get/set struct cea_sad from/to 3-byte sad Jani Nikula
2023-10-31 10:16   ` [Intel-gfx] " Jani Nikula
2023-10-31 10:16 ` [PATCH v2 6/6] drm/eld: add helpers to modify the SADs of an ELD Jani Nikula
2023-10-31 10:16   ` [Intel-gfx] " Jani Nikula
2023-10-31 10:21   ` Golani, Mitulkumar Ajitkumar
2023-10-31 10:21     ` [Intel-gfx] " Golani, Mitulkumar Ajitkumar
2023-10-31 20:29 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/edid: split out drm_eld.[ch], add some SAD helpers (rev2) Patchwork
2023-10-31 20:29 ` [Intel-gfx] ✗ Fi.CI.SPARSE: " Patchwork
2023-10-31 20:43 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2023-11-02  9:04 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2023-11-02  9:35 ` [PATCH v2 0/6] drm/edid: split out drm_eld.[ch], add some SAD helpers Jani Nikula
2023-11-02  9:35   ` [Intel-gfx] " Jani Nikula
2023-11-09 15:33   ` Jani Nikula

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