X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fauxdisplay%2Fcfag12864b.c;h=cb44cb4f6a47bf25c38a37f0a15832517f2d0c26;hb=3520c92283bb7ddd59daf90cfc1eb107dc9ab76c;hp=889583dfc1a6652be25486d394d80f9c16d44c8e;hpb=59b8175c771040afcd4ad67022b0cc80c216b866;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/auxdisplay/cfag12864b.c b/drivers/auxdisplay/cfag12864b.c
index 889583dfc1a..cb44cb4f6a4 100644
--- a/drivers/auxdisplay/cfag12864b.c
+++ b/drivers/auxdisplay/cfag12864b.c
@@ -311,6 +311,17 @@ EXPORT_SYMBOL_GPL(cfag12864b_enable);
 EXPORT_SYMBOL_GPL(cfag12864b_disable);
 EXPORT_SYMBOL_GPL(cfag12864b_isenabled);
 
+/*
+ * Is the module inited?
+ */
+
+static unsigned char cfag12864b_inited;
+unsigned char cfag12864b_isinited(void)
+{
+	return cfag12864b_inited;
+}
+EXPORT_SYMBOL_GPL(cfag12864b_isinited);
+
 /*
  * Module Init & Exit
  */
@@ -319,6 +330,13 @@ static int __init cfag12864b_init(void)
 {
 	int ret = -EINVAL;
 
+	/* ks0108_init() must be called first */
+	if (!ks0108_isinited()) {
+		printk(KERN_ERR CFAG12864B_NAME ": ERROR: "
+			"ks0108 is not initialized\n");
+		goto none;
+	}
+
 	if (PAGE_SIZE < CFAG12864B_SIZE) {
 		printk(KERN_ERR CFAG12864B_NAME ": ERROR: "
 			"page size (%i) < cfag12864b size (%i)\n",
@@ -354,6 +372,7 @@ static int __init cfag12864b_init(void)
 	cfag12864b_clear();
 	cfag12864b_on();
 
+	cfag12864b_inited = 1;
 	return 0;
 
 cachealloced: