X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fblock%2Fparide%2Fpf.c;fp=kernel%2Fdrivers%2Fblock%2Fparide%2Fpf.c;h=7a7d977a76c5089b54f715f861e63a11832f23c9;hb=e09b41010ba33a20a87472ee821fa407a5b8da36;hp=9a15fd3c9349403a19c518e278cf547d63733504;hpb=f93b97fd65072de626c074dbe099a1fff05ce060;p=kvmfornfv.git

diff --git a/kernel/drivers/block/paride/pf.c b/kernel/drivers/block/paride/pf.c
index 9a15fd3c9..7a7d977a7 100644
--- a/kernel/drivers/block/paride/pf.c
+++ b/kernel/drivers/block/paride/pf.c
@@ -264,6 +264,7 @@ static int pf_cmd;		/* current command READ/WRITE */
 static struct pf_unit *pf_current;/* unit of current request */
 static int pf_mask;		/* stopper for pseudo-int */
 static char *pf_buf;		/* buffer for request in progress */
+static void *par_drv;		/* reference of parport driver */
 
 /* kernel glue structures */
 
@@ -703,6 +704,11 @@ static int pf_detect(void)
 	printk("%s: %s version %s, major %d, cluster %d, nice %d\n",
 	       name, name, PF_VERSION, major, cluster, nice);
 
+	par_drv = pi_register_driver(name);
+	if (!par_drv) {
+		pr_err("failed to register %s driver\n", name);
+		return -1;
+	}
 	k = 0;
 	if (pf_drive_count == 0) {
 		if (pi_init(pf->pi, 1, -1, -1, -1, -1, -1, pf_scratch, PI_PF,
@@ -735,6 +741,7 @@ static int pf_detect(void)
 	printk("%s: No ATAPI disk detected\n", name);
 	for (pf = units, unit = 0; unit < PF_UNITS; pf++, unit++)
 		put_disk(pf->disk);
+	pi_unregister_driver(par_drv);
 	return -1;
 }