linux-kernel - Re: [PATCH 2.6.20] isdn-capi: Use ARRAY

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Date:	Tue, 6 Feb 2007 22:41:30 +0200
From:	"Ahmed S. Darwish" <darwish.07@...il.com>
To:	Joe Perches <joe@...ches.com>
Cc:	kkeil@...e.de, kai.germaschewski@....de,
	linux-kernel@...r.kernel.org, isdn4linux@...tserv.isdn4linux.de
Subject: Re: [PATCH 2.6.20] isdn-capi: Use ARRAY_SIZE macro when appropriate

On Tue, Feb 06, 2007 at 09:52:17AM -0800, Joe Perches wrote:
> On Tue, 2007-02-06 at 18:04 +0200, Ahmed S. Darwish wrote:
> > A patch to use ARRAY_SIZE macro already defined in kernel.h
> > Signed-off-by: Ahmed S. Darwish <darwish.07@...il.com>
[...]
> > -    int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
> > +    int nelem = ARRAY_SIZE(procfsentries);
> >      int i;
> >  
> >      for (i=0; i < nelem; i++) {
> 
> For these patches, perhaps you can eliminate the temporary
> variable and change the loop to the more common form of
> 
> 	for (i = 0; i < ARRAY_SIZE(array); i++) {

Thanks, I think it's better too. Here's the modified patch.

A patch to use ARRAY_SIZE macro when appropriate.

Signed-off-by: Ahmed S. Darwish <darwish.07@...il.com>
---
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
index d22c022..87fe89c 100644
--- a/drivers/isdn/capi/capi.c
+++ b/drivers/isdn/capi/capi.c
@@ -1456,10 +1456,9 @@ static struct procfsentries {
 
 static void __init proc_init(void)
 {
-    int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
     int i;
 
-    for (i=0; i < nelem; i++) {
+    for (i = 0; i < ARRAY_SIZE(procfsentries); i++) {
         struct procfsentries *p = procfsentries + i;
 	p->procent = create_proc_entry(p->name, p->mode, NULL);
 	if (p->procent) p->procent->read_proc = p->read_proc;
@@ -1468,10 +1467,9 @@ static void __init proc_init(void)
 
 static void __exit proc_exit(void)
 {
-    int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
     int i;
 
-    for (i=nelem-1; i >= 0; i--) {
+    for (i = ARRAY_SIZE(procfsentries) - 1; i >= 0; i--) {
         struct procfsentries *p = procfsentries + i;
 	if (p->procent) {
 	   remove_proc_entry(p->name, NULL);
diff --git a/drivers/isdn/capi/capidrv.c b/drivers/isdn/capi/capidrv.c
index c4d438c..cff5d1e 100644
--- a/drivers/isdn/capi/capidrv.c
+++ b/drivers/isdn/capi/capidrv.c
@@ -2218,10 +2218,9 @@ static struct procfsentries {
 
 static void __init proc_init(void)
 {
-    int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
     int i;
 
-    for (i=0; i < nelem; i++) {
+    for (i = 0; i < ARRAY_SIZE(procfsentries); i++) {
         struct procfsentries *p = procfsentries + i;
 	p->procent = create_proc_entry(p->name, p->mode, NULL);
 	if (p->procent) p->procent->read_proc = p->read_proc;
@@ -2230,10 +2229,9 @@ static void __init proc_init(void)
 
 static void __exit proc_exit(void)
 {
-    int nelem = sizeof(procfsentries)/sizeof(procfsentries[0]);
     int i;
 
-    for (i=nelem-1; i >= 0; i--) {
+    for (i = ARRAY_SIZE(procfsentries) - 1; i >= 0; i--) {
         struct procfsentries *p = procfsentries + i;
 	if (p->procent) {
 	   remove_proc_entry(p->name, NULL);


-- 
Ahmed S. Darwish
http://darwish-07.blogspot.com
-
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