svn commit: r295586 - head/sys/fs/cd9660

[Pedro F. Giffuni]

Author: pfg
Date: Fri Feb 12 22:46:14 2016
New Revision: 295586
URL: https://svnweb.freebsd.org/changeset/base/295586

Log:
  cd9660: More "check for NULL" cleaunps.
  
  Cleanup some checks for NULL. Most of these were always unnecessary and
  starting with r294954 brelse() doesn't need any NULL checks at all.
  
  For now keep the checks somewhat consistent with NetBSD in case we want to
  merge the cleanups to older versions.

Modified:
  head/sys/fs/cd9660/cd9660_vfsops.c

Modified: head/sys/fs/cd9660/cd9660_vfsops.c
==============================================================================
--- head/sys/fs/cd9660/cd9660_vfsops.c	Fri Feb 12 21:46:20 2016	(r295585)
+++ head/sys/fs/cd9660/cd9660_vfsops.c	Fri Feb 12 22:46:14 2016	(r295586)
@@ -309,13 +309,13 @@ iso_mountfs(devvp, mp)
 		default:
 			break;
 		}
-		if (bp) {
+		if (bp != NULL) {
 			brelse(bp);
 			bp = NULL;
 		}
 	}
  vd_end:
-	if (bp) {
+	if (bp != NULL) {
 		brelse(bp);
 		bp = NULL;
 	}
@@ -474,11 +474,11 @@ iso_mountfs(devvp, mp)
 
 	return 0;
 out:
-	if (bp)
+	if (bp != NULL)
 		brelse(bp);
-	if (pribp)
+	if (pribp != NULL)
 		brelse(pribp);
-	if (supbp)
+	if (supbp != NULL)
 		brelse(supbp);
 	if (cp != NULL) {
 		DROP_GIANT();
@@ -751,8 +751,7 @@ cd9660_vget_internal(mp, ino, flags, vpp
 #if 0
 		if (isonum_733(isodir->extent) +
 		    isonum_711(isodir->ext_attr_length) != ifhp->ifid_start) {
-			if (bp != 0)
-				brelse(bp);
+			brelse(bp);
 			printf("fhtovp: file start miss %d vs %d\n",
 			       isonum_733(isodir->extent) + isonum_711(isodir->ext_attr_length),
 			       ifhp->ifid_start);
@@ -770,7 +769,7 @@ cd9660_vget_internal(mp, ino, flags, vpp
 		 * read the `.' entry out of a dir.
 		 */
 		ip->iso_start = ino >> imp->im_bshift;
-		if (bp != 0)
+		if (bp != NULL)
 			brelse(bp);
 		if ((error = cd9660_blkatoff(vp, (off_t)0, NULL, &bp)) != 0) {
 			vput(vp);
@@ -809,8 +808,7 @@ cd9660_vget_internal(mp, ino, flags, vpp
 		break;
 	}
 
-	if (bp != 0)
-		brelse(bp);
+	brelse(bp);
 
 	/*
 	 * Initialize the associated vnode