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From: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
To: gregkh@linuxfoundation.org, eric@anholt.net, wahrenst@gmx.net
Cc: devel@driverdev.osuosl.org, linux-rpi-kernel@lists.infradead.org
Subject: [PATCH 2/3] staging: vchiq: Refactor indentation in vchiq_dump_* functions
Date: Wed, 20 Nov 2019 10:36:47 -0500
Message-ID: <7c0baa2888cef348b96dab65f2726f1e1d8c0a27.1574253964.git.marcgonzalez@google.com> (raw)
In-Reply-To: <cover.1574253964.git.marcgonzalez@google.com>

Doing this helps with readability, and makes
the logic easier to follow.

Signed-off-by: Marcelo Diop-Gonzalez <marcgonzalez@google.com>
---
 .../interface/vchiq_arm/vchiq_arm.c           | 104 +++++++++---------
 1 file changed, 53 insertions(+), 51 deletions(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 942b4768c88e..8f9cfa083264 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -2076,40 +2076,40 @@ void
 vchiq_dump(void *dump_context, const char *str, int len)
 {
 	struct dump_context *context = (struct dump_context *)dump_context;
+	int copy_bytes;
 
-	if (context->actual < context->space) {
-		int copy_bytes;
+	if (context->actual >= context->space)
+		return;
 
-		if (context->offset > 0) {
-			int skip_bytes = min_t(int, len, context->offset);
+	if (context->offset > 0) {
+		int skip_bytes = min_t(int, len, context->offset);
 
-			str += skip_bytes;
-			len -= skip_bytes;
-			context->offset -= skip_bytes;
-			if (context->offset > 0)
-				return;
-		}
-		copy_bytes = min_t(int, len, context->space - context->actual);
-		if (copy_bytes == 0)
+		str += skip_bytes;
+		len -= skip_bytes;
+		context->offset -= skip_bytes;
+		if (context->offset > 0)
 			return;
-		if (copy_to_user(context->buf + context->actual, str,
-			copy_bytes))
+	}
+	copy_bytes = min_t(int, len, context->space - context->actual);
+	if (copy_bytes == 0)
+		return;
+	if (copy_to_user(context->buf + context->actual, str,
+			 copy_bytes))
+		context->actual = -EFAULT;
+	context->actual += copy_bytes;
+	len -= copy_bytes;
+
+	/*
+	 * If the terminating NUL is included in the length, then it
+	 * marks the end of a line and should be replaced with a
+	 * carriage return.
+	 */
+	if ((len == 0) && (str[copy_bytes - 1] == '\0')) {
+		char cr = '\n';
+
+		if (copy_to_user(context->buf + context->actual - 1,
+				 &cr, 1))
 			context->actual = -EFAULT;
-		context->actual += copy_bytes;
-		len -= copy_bytes;
-
-		/*
-		 * If the terminating NUL is included in the length, then it
-		 * marks the end of a line and should be replaced with a
-		 * carriage return.
-		 */
-		if ((len == 0) && (str[copy_bytes - 1] == '\0')) {
-			char cr = '\n';
-
-			if (copy_to_user(context->buf + context->actual - 1,
-				&cr, 1))
-				context->actual = -EFAULT;
-		}
 	}
 }
 
@@ -2134,34 +2134,36 @@ vchiq_dump_platform_instances(void *dump_context)
 		struct vchiq_service *service = state->services[i];
 		struct vchiq_instance *instance;
 
-		if (service && (service->base.callback == service_callback)) {
-			instance = service->instance;
-			if (instance)
-				instance->mark = 0;
-		}
+		if (!service || service->base.callback != service_callback)
+			continue;
+
+		instance = service->instance;
+		if (instance)
+			instance->mark = 0;
 	}
 
 	for (i = 0; i < state->unused_service; i++) {
 		struct vchiq_service *service = state->services[i];
 		struct vchiq_instance *instance;
 
-		if (service && (service->base.callback == service_callback)) {
-			instance = service->instance;
-			if (instance && !instance->mark) {
-				len = snprintf(buf, sizeof(buf),
-					"Instance %pK: pid %d,%s completions %d/%d",
-					instance, instance->pid,
-					instance->connected ? " connected, " :
-						"",
-					instance->completion_insert -
-						instance->completion_remove,
-					MAX_COMPLETIONS);
-
-				vchiq_dump(dump_context, buf, len + 1);
-
-				instance->mark = 1;
-			}
-		}
+		if (!service || service->base.callback != service_callback)
+			continue;
+
+		instance = service->instance;
+		if (!instance || instance->mark)
+			continue;
+
+		len = snprintf(buf, sizeof(buf),
+			       "Instance %pK: pid %d,%s completions %d/%d",
+			       instance, instance->pid,
+			       instance->connected ? " connected, " :
+			       "",
+			       instance->completion_insert -
+			       instance->completion_remove,
+			       MAX_COMPLETIONS);
+
+		vchiq_dump(dump_context, buf, len + 1);
+		instance->mark = 1;
 	}
 }
 
-- 
2.20.1

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  parent reply index

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-20 15:36 [PATCH 0/3] staging: vchiq: Fix vchiq_read return value in case of error Marcelo Diop-Gonzalez
2019-11-20 15:36 ` [PATCH 1/3] staging: vchiq_dump: Replace min with min_t Marcelo Diop-Gonzalez
2019-11-20 15:46   ` Greg KH
2019-11-20 15:36 ` Marcelo Diop-Gonzalez [this message]
2019-11-20 15:36 ` [PATCH 3/3] staging: vchiq: Have vchiq_dump_* functions return an error code Marcelo Diop-Gonzalez
2019-11-20 18:50   ` Dan Carpenter
2019-11-21 21:25     ` Marcelo Diop-Gonzalez
2019-11-20 20:20 ` [PATCH v2 0/4] staging: vchiq: Fix vchiq_read return value in case of error Marcelo Diop-Gonzalez
2019-11-20 20:20   ` [PATCH v2 1/4] staging: vchiq: Fix block comment format in vchiq_dump() Marcelo Diop-Gonzalez
2019-11-20 20:21   ` [PATCH v2 2/4] staging: vchiq_dump: Replace min with min_t Marcelo Diop-Gonzalez
2019-11-20 20:21   ` [PATCH v2 3/4] staging: vchiq: Refactor indentation in vchiq_dump_* functions Marcelo Diop-Gonzalez
2019-11-20 20:21   ` [PATCH v2 4/4] staging: vchiq: Have vchiq_dump_* functions return an error code Marcelo Diop-Gonzalez
2019-11-21 19:38   ` [PATCH v2 0/4] staging: vchiq: Fix vchiq_read return value in case of error Nicolas Saenz Julienne
2019-11-21 21:24     ` Marcelo Diop-Gonzalez
2019-11-21 10:42 ` [PATCH 0/3] " Stefan Wahren
2019-11-21 19:41   ` Nicolas Saenz Julienne

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