X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=drivers%2Finfiniband%2Fhw%2Fqib%2Fqib_sysfs.c;h=568b21eb6ea158508207275f2626e1c46cbbd892;hb=7ee23491b39259ae83899dd93b2a29ef0f22f0a7;hp=3926be78036eecfeb9fa95c583d027798951b899;hpb=77fdaa091d79c87323a9f3912a25f73e02ea2a01;p=linux-2.6-microblaze.git

diff --git a/drivers/infiniband/hw/qib/qib_sysfs.c b/drivers/infiniband/hw/qib/qib_sysfs.c
index 3926be78036e..568b21eb6ea1 100644
--- a/drivers/infiniband/hw/qib/qib_sysfs.c
+++ b/drivers/infiniband/hw/qib/qib_sysfs.c
@@ -301,6 +301,9 @@ static ssize_t qib_portattr_show(struct kobject *kobj,
 	struct qib_pportdata *ppd =
 		container_of(kobj, struct qib_pportdata, pport_kobj);
 
+	if (!pattr->show)
+		return -EIO;
+
 	return pattr->show(ppd, buf);
 }
 
@@ -312,6 +315,9 @@ static ssize_t qib_portattr_store(struct kobject *kobj,
 	struct qib_pportdata *ppd =
 		container_of(kobj, struct qib_pportdata, pport_kobj);
 
+	if (!pattr->store)
+		return -EIO;
+
 	return pattr->store(ppd, buf, len);
 }