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From: Tim Waugh <twaugh@redhat.com>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: linux-kernel@vger.kernel.org
Subject: [patch] 2.4.0: parport device IDs
Date: Fri, 5 Jan 2001 17:19:13 +0000	[thread overview]
Message-ID: <20010105171913.O5253@redhat.com> (raw)

Linus, here is a patch from Adam J. Richter to add the tiny kernel
hook for device-id based parport device driver module loading, as well
as an example usage in lp.c. (The code for making use of it is already
in modutils.)

Tim.
*/

2001-01-05  Adam J. Richter  <adam@yggdrasil.com>

	* include/linux/parport.h: Declare parport_device_id.
	* drivers/char/lp.c: Use it as MODULE_DEVICE_TABLE.

--- linux-2.4.0/include/linux/parport.h.devid	Tue Aug  8 13:39:21 2000
+++ linux-2.4.0/include/linux/parport.h	Fri Jan  5 10:58:18 2001
@@ -91,6 +91,10 @@
 /* Flags for block transfer operations. */
 #define PARPORT_EPP_FAST		(1<<0) /* Unreliable counts. */
 
+struct parport_device_id {
+	const char *pattern;
+};
+
 /* The rest is for the kernel only */
 #ifdef __KERNEL__
 
--- linux-2.4.0/drivers/char/lp.c.devid	Fri Jan  5 10:58:18 2001
+++ linux-2.4.0/drivers/char/lp.c	Fri Jan  5 10:58:18 2001
@@ -141,6 +141,17 @@
 /* ROUND_UP macro from fs/select.c */
 #define ROUND_UP(x,y) (((x)+(y)-1)/(y))
 
+/* printer_ieee1284_id is declared as its own variable so that it
+   can be in the __initdata section. */
+static __initdata char printer_ieee1284_id[] = "CLS:PRINTER";
+
+static __initdata struct parport_device_id printer_id_tbl[] = {
+  	{ printer_ieee1284_id },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(parport, printer_id_tbl);
+
 static devfs_handle_t devfs_handle = NULL;
 
 struct lp_struct lp_table[LP_NO];
-
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                 reply	other threads:[~2001-01-05 17:19 UTC|newest]

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