alternative [PATCH] 1/2) drivers/ieee1394/: schedule unusedEXPORT_SYMBOL's for removal

[Stefan Richter]

Ben Collins wrote:
> Can we, instead of removing these, wrap then in a "Export full API" config
> option? I've already got several reports from external projects that are
> using most of these exported symbols, and I'd hate to make it harder on
> them to use our drivers (for internal projects or otherwise).

OK, why not. Here is an alternative patch, split in two parts. The first
part is independent of the second, although the 2nd motivates the 1st.
2nd part follows in a separate posting.

- - - - - - - - - - - - 8< - - - - - - - - - - - -

IEEE 1394 subsystem: Wrap symbols that are neither used by the 1394 drivers in
the mainline kernel (a.k.a. Linux1394) nor by dfg1394 (a.k.a the video-2-1394
project) into a new configuration option. Switch this option on by default.

Signed-off-by: Stefan Richter <stefanr@xxxxxxxxxxxxxxxxx>


diff -ru linux-2.6.13-rc2.old/drivers/ieee1394/Kconfig linux-2.6.13-rc2/drivers/ieee1394/Kconfig
--- linux-2.6.13-rc2.old/drivers/ieee1394/Kconfig	2005-07-06 05:46:33.000000000 +0200
+++ linux-2.6.13-rc2/drivers/ieee1394/Kconfig	2005-07-09 12:01:32.000000000 +0200
@@ -66,6 +66,18 @@
 	  with MacOSX and WinXP IP-over-1394), enable this option and the
 	  eth1394 option below.
 
+config IEEE1394_EXPORT_FULL_API
+	bool "Export all symbols of ieee1394's API"
+	depends on IEEE1394
+	default y
+	help
+	  Export all symbols of ieee1394's driver programming interface, even
+	  those that are not currently used by the standard IEEE 1394 drivers.
+
+	  This option does not affect the interface to userspace applications.
+	  Say Y here if you want to compile externally developed drivers that
+	  make extended use of ieee1394's API. It is otherwise safe to say N.
+
 comment "Device Drivers"
 	depends on IEEE1394
 
diff -ru linux-2.6.13-rc2.old/drivers/ieee1394/ieee1394_core.c linux-2.6.13-rc2/drivers/ieee1394/ieee1394_core.c
--- linux-2.6.13-rc2.old/drivers/ieee1394/ieee1394_core.c	2005-07-06 05:46:33.000000000 +0200
+++ linux-2.6.13-rc2/drivers/ieee1394/ieee1394_core.c	2005-07-09 11:53:25.000000000 +0200
@@ -1223,9 +1223,7 @@
 EXPORT_SYMBOL(hpsb_set_packet_complete_task);
 EXPORT_SYMBOL(hpsb_alloc_packet);
 EXPORT_SYMBOL(hpsb_free_packet);
-EXPORT_SYMBOL(hpsb_send_phy_config);
 EXPORT_SYMBOL(hpsb_send_packet);
-EXPORT_SYMBOL(hpsb_send_packet_and_wait);
 EXPORT_SYMBOL(hpsb_reset_bus);
 EXPORT_SYMBOL(hpsb_bus_reset);
 EXPORT_SYMBOL(hpsb_selfid_received);
@@ -1233,6 +1231,10 @@
 EXPORT_SYMBOL(hpsb_packet_sent);
 EXPORT_SYMBOL(hpsb_packet_received);
 EXPORT_SYMBOL_GPL(hpsb_disable_irm);
+#ifdef CONFIG_IEEE1394_EXPORT_FULL_API
+EXPORT_SYMBOL(hpsb_send_phy_config);
+EXPORT_SYMBOL(hpsb_send_packet_and_wait);
+#endif
 
 /** ieee1394_transactions.c **/
 EXPORT_SYMBOL(hpsb_get_tlabel);
@@ -1262,9 +1264,11 @@
 EXPORT_SYMBOL(hpsb_set_hostinfo_key);
 EXPORT_SYMBOL(hpsb_get_hostinfo_bykey);
 EXPORT_SYMBOL(hpsb_set_hostinfo);
+EXPORT_SYMBOL(highlevel_host_reset);
+#ifdef CONFIG_IEEE1394_EXPORT_FULL_API
 EXPORT_SYMBOL(highlevel_add_host);
 EXPORT_SYMBOL(highlevel_remove_host);
-EXPORT_SYMBOL(highlevel_host_reset);
+#endif
 
 /** nodemgr.c **/
 EXPORT_SYMBOL(hpsb_node_fill_packet);
@@ -1272,7 +1276,9 @@
 EXPORT_SYMBOL(hpsb_register_protocol);
 EXPORT_SYMBOL(hpsb_unregister_protocol);
 EXPORT_SYMBOL(ieee1394_bus_type);
+#ifdef CONFIG_IEEE1394_EXPORT_FULL_API
 EXPORT_SYMBOL(nodemgr_for_each_host);
+#endif
 
 /** csr.c **/
 EXPORT_SYMBOL(hpsb_update_config_rom);
@@ -1309,19 +1315,21 @@
 EXPORT_SYMBOL(hpsb_iso_recv_flush);
 
 /** csr1212.c **/
-EXPORT_SYMBOL(csr1212_create_csr);
-EXPORT_SYMBOL(csr1212_init_local_csr);
-EXPORT_SYMBOL(csr1212_new_immediate);
 EXPORT_SYMBOL(csr1212_new_directory);
-EXPORT_SYMBOL(csr1212_associate_keyval);
 EXPORT_SYMBOL(csr1212_attach_keyval_to_directory);
-EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf);
 EXPORT_SYMBOL(csr1212_detach_keyval_from_directory);
 EXPORT_SYMBOL(csr1212_release_keyval);
-EXPORT_SYMBOL(csr1212_destroy_csr);
 EXPORT_SYMBOL(csr1212_read);
-EXPORT_SYMBOL(csr1212_generate_csr_image);
 EXPORT_SYMBOL(csr1212_parse_keyval);
-EXPORT_SYMBOL(csr1212_parse_csr);
 EXPORT_SYMBOL(_csr1212_read_keyval);
 EXPORT_SYMBOL(_csr1212_destroy_keyval);
+#ifdef CONFIG_IEEE1394_EXPORT_FULL_API
+EXPORT_SYMBOL(csr1212_create_csr);
+EXPORT_SYMBOL(csr1212_init_local_csr);
+EXPORT_SYMBOL(csr1212_new_immediate);
+EXPORT_SYMBOL(csr1212_associate_keyval);
+EXPORT_SYMBOL(csr1212_new_string_descriptor_leaf);
+EXPORT_SYMBOL(csr1212_destroy_csr);
+EXPORT_SYMBOL(csr1212_generate_csr_image);
+EXPORT_SYMBOL(csr1212_parse_csr);
+#endif

-
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