linux-kernel - [PATCH] Fix the epca driver to permit epca_setup() to be invoked from the kernel cmdline

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Message-ID: <20080709131927.639.72528.stgit@warthog.procyon.org.uk>
Date:	Wed, 09 Jul 2008 14:19:28 +0100
From:	David Howells <dhowells@...hat.com>
To:	alan@...hat.com, akpm@...ux-foundation.org
Cc:	dhowells@...hat.com, linux-kernel@...r.kernel.org
Subject: [PATCH] Fix the epca driver to permit epca_setup() to be invoked from
	the kernel cmdline

Fix the epca driver to call epca_setup() if digiepca=xxx is included on the
command line and the epca driver is built in.

epca_setup() used to be called from init/main.c in 2.2 kernels, but somewhere
along the way that call was removed but not replaced.

Signed-off-by: David Howells <dhowells@...hat.com>
---

 drivers/char/epca.c |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)


diff --git a/drivers/char/epca.c b/drivers/char/epca.c
index 60a4df7..96a4b6b 100644
--- a/drivers/char/epca.c
+++ b/drivers/char/epca.c
@@ -186,7 +186,6 @@ static void pc_throttle(struct tty_struct *tty);
 static void pc_unthrottle(struct tty_struct *tty);
 static void digi_send_break(struct channel *ch, int msec);
 static void setup_empty_event(struct tty_struct *tty, struct channel *ch);
-static void epca_setup(char *, int *);
 
 static int pc_write(struct tty_struct *, const unsigned char *, int);
 static int pc_init(void);
@@ -2538,7 +2537,8 @@ static void setup_empty_event(struct tty_struct *tty, struct channel *ch)
 	memoff(ch);
 }
 
-static void epca_setup(char *str, int *ints)
+#ifndef MODULE
+static void __init epca_setup(char *str, int *ints)
 {
 	struct board_info board;
 	int               index, loop, last;
@@ -2792,6 +2792,17 @@ static void epca_setup(char *str, int *ints)
 	num_cards++;
 }
 
+static int __init epca_real_setup(char *str)
+{
+	int ints[11];
+
+	epca_setup(get_options(str, 11, ints), ints);
+	return 1;
+}
+
+__setup("digiepca", epca_real_setup);
+#endif
+
 enum epic_board_types {
 	brd_xr = 0,
 	brd_xem,

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