ide-pci-generic: kill the unused ifdef/endif/MODULE code

with module_param macro, the __setup code can be killed now:
	const __setup("all-generic-ide", ide_generic_all_on);

and the module name "generic.ko" is not descriptive to its functionality,
can be changed in Makefile, the "ide-pci-generic.ko" is better.

the ide-pci-generic.all-generic-ide parameter also documented
in Documentation/kernel-parameters.txt
Signed-off-by: Denis Cheng <crquan@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Documentation/kernel-parameters.txt

@@ -780,6 +780,9 @@ and is between 256 and 4096 characters. It is defined in the file
 			loop use the MONITOR/MWAIT idle loop anyways. Performance should be the same
 			as idle=poll.
 
+	ide-pci-generic.all-generic-ide [HW] (E)IDE subsystem
+			Claim all unknown PCI IDE storage controllers.
+
 	ignore_loglevel	[KNL]
 			Ignore loglevel setting - this will print /all/
 			kernel messages to the console. Useful for debugging.

drivers/ide/pci/Makefile

@@ -34,7 +34,8 @@ obj-$(CONFIG_BLK_DEV_TRM290)		+= trm290.o
 obj-$(CONFIG_BLK_DEV_VIA82CXXX)		+= via82cxxx.o
 
 # Must appear at the end of the block
-obj-$(CONFIG_BLK_DEV_GENERIC)          += generic.o
+obj-$(CONFIG_BLK_DEV_GENERIC)		+= ide-pci-generic.o
+ide-pci-generic-y			+= generic.o
 
 ifeq ($(CONFIG_BLK_DEV_CMD640), m)
 	obj-m += cmd640.o

drivers/ide/pci/generic.c

@@ -29,19 +29,6 @@
 
 static int ide_generic_all;		/* Set to claim all devices */
 
-/*
- * the module_param_named() was added for the modular case
- * the __setup() is left as compatibility for existing setups
- */
-#ifndef MODULE
-static int __init ide_generic_all_on(char *unused)
-{
-	ide_generic_all = 1;
-	printk(KERN_INFO "IDE generic will claim all unknown PCI IDE storage controllers.\n");
-	return 1;
-}
-const __setup("all-generic-ide", ide_generic_all_on);
-#endif
 module_param_named(all_generic_ide, ide_generic_all, bool, 0444);
 MODULE_PARM_DESC(all_generic_ide, "IDE generic will claim all unknown PCI IDE storage controllers.");