Add capability to remove obsolete drivers with make rmmod

From: Mauro Carvalho Chehab <mchehab@infradead.org>

Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

3 files changed, 102 insertions, 1 deletions

diff --git a/v4l/obsolete.txt b/v4l/obsolete.txt
new file mode 100644
index 000000000..384224df8
--- /dev/null
+++ b/v4l/obsolete.txt
@@ -0,0 +1,5 @@
+# This file were replaced by videobuf-dma-sg and videobuf-core
+video/video-buf
+
+# This file were replaced by videobuf-dvb
+video/video-buf-dvb
diff --git a/v4l/scripts/make_makefile.pl b/v4l/scripts/make_makefile.pl
index 8a31c025c..709546fca 100755
--- a/v4l/scripts/make_makefile.pl
+++ b/v4l/scripts/make_makefile.pl
@@ -124,6 +124,53 @@ sub open_makefile($) {
 	close $in;
 }
 
+my $obsolete;
+sub getobsolete()
+{
+        open OBSOLETE, "<obsolete.txt";
+        while (<OBSOLETE>) {
+                if (m/^\s*\#/) {
+                        next;
+                }
+                s/\s*\#.*$//;
+                s/\n$//;
+
+		my $idir=$_;
+
+		if (!$idir) {
+			next;
+		}
+		my $file=$_;
+
+		$idir=~ s|(^.*)/[^/]+|\1|;
+		$file=~ s|^.*/||;
+		$file.=".ko";
+
+		$obsolete{$idir}{$file} = 1;
+        }
+
+        close OBSOLETE;
+}
+
+sub removeobsolete()
+{
+	while ( my ($dir, $files) = each(%obsolete) ) {
+		print OUT "\t\@echo -e \"\\nRemoving obsolete files at \$(KDIR26)/$dir:\"\n";
+		print OUT "\t\@files='", join(' ', keys %$files), "'; ";
+
+		print OUT "for i in \$\$files;do if [ -e \$(DESTDIR)\$(KDIR26)/$dir/\$\$i ]; then ";
+		print OUT "echo -n \"\$\$i \";";
+		print OUT " rm \$(DESTDIR)\$(KDIR26)/$dir/\$\$i; fi; done; ";
+
+		print OUT "for i in \$\$files;do if [ -e \$(DESTDIR)\$(KDIR26)/$dir/\$\$i.gz ]; then ";
+		print OUT "echo -n \"\$\$i.gz \";";
+		print OUT " rm \$(DESTDIR)\$(KDIR26)/$dir/\$\$i.gz; fi; done; echo;\n\n";
+	}
+}
+
+
+getobsolete();
+
 open OUT, '>Makefile.media' or die 'Unable to write Makefile.media';
 open_makefile('../linux/drivers/media/Makefile');
 
@@ -131,6 +178,9 @@ open_makefile('../linux/drivers/media/Makefile');
 print OUT "media-install::\n";
 print OUT "\t\@echo \"Stripping debug info from files\"\n";
 print OUT "\t\@strip --strip-debug \$(inst-m)\n\n";
+
+removeobsolete();
+
 print OUT "\t\@echo \"Installing kernel modules under \$(DESTDIR)\$(KDIR26)/:\"\n";
 
 while (my ($dir, $files) = each %instdir) {
@@ -150,8 +200,10 @@ print OUT "\t/sbin/depmod -a \$(KERNELRELEASE) \$(if \$(DESTDIR),-b \$(DESTDIR))
 
 # Creating Remove rule
 print OUT "media-rminstall::\n";
-print OUT "\t\@echo -e \"\\nRemoving old \$(DEST) files\\n\"\n";
 
+removeobsolete();
+
+print OUT "\t\@echo -e \"\\nRemoving old \$(DEST) files\\n\"\n";
 while ( my ($dir, $files) = each(%instdir) ) {
 	print OUT "\t\@echo -e \"\\nRemoving old \$(KDIR26)/$dir files:\"\n";
 	print OUT "\t\@files='", join(' ', keys %$files), "'; ";
diff --git a/v4l/scripts/rmmod.pl b/v4l/scripts/rmmod.pl
index d190a9edf..48bc7ac1f 100755
--- a/v4l/scripts/rmmod.pl
+++ b/v4l/scripts/rmmod.pl
@@ -27,6 +27,25 @@ my %debug = (	"tuner"			=> "tuner_debug=1",
 		"dvb-usb-dibusb-common"	=> "debug=0x03",
 	    );
 
+my @obsolete;
+sub getobsolete()
+{
+	open OBSOLETE, "<obsolete.txt";
+	while (<OBSOLETE>) {
+		if (m/^\s*\#/) {
+			next;
+		}
+		s/\s*\#.*$//;
+		s/\n$//;
+		s|^.*/||;
+		if (!$_) {
+			next;
+		}
+		push @obsolete,$_;
+	}
+
+	close OBSOLETE;
+}
 
 sub findprog($)
 {
@@ -155,6 +174,7 @@ sub insmod ($)
 
 sub rmmod ()
 {
+	getobsolete();
 	my $rmmod = findprog('rmmod');
 	while (my $key=pop @modlist) {
 		my $dep=$key;
@@ -166,6 +186,25 @@ sub rmmod ()
 	}
 }
 
+sub rm_obsolete ()
+{
+	getobsolete();
+	my @obsolete2;
+
+	my $rmmod = findprog('rmmod');
+	while (my $key=pop @obsolete) {
+		my $dep=$key;
+		$dep=~s/[\-]/_/g;
+		if (exists ($loaded{$dep})) {
+			print "$rmmod $dep\n";
+			if (system "$rmmod $dep\n") {
+				push @obsolete2,$key;
+			}
+		}
+	}
+	@obsolete=@obsolete2;
+}
+
 sub prepare_cmd()
 {
 	find(\&parse_dir, ".");
@@ -185,6 +224,11 @@ if ($mode eq "load") {
 		prepare_cmd;
 		parse_loaded;
 		rmmod;
+		if (length(@obsolete)) {
+			rm_obsolete;
+			rmmod;
+			rm_obsolete;
+		}
 	} elsif ($mode eq "reload") {
 		prepare_cmd;
 		parse_loaded;