missing argument in bin_attribute ->read()/->write()

Fallout from commit 91a6902958f052358899f58683d44e36228d85c2 ('sysfs:
add parameter "struct bin_attribute *" ...')

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 9a13b24..8b8f136 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -295,8 +295,8 @@
 static struct subsys_attribute sys_ipl_device_attr =
 	__ATTR(device, S_IRUGO, sys_ipl_device_show, NULL);
 
-static ssize_t ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off,
-				  size_t count)
+static ssize_t ipl_parameter_read(struct kobject *kobj, struct bin_attribute *attr,
+				  char *buf, loff_t off, size_t count)
 {
 	unsigned int size = IPL_PARMBLOCK_SIZE;
 
@@ -317,8 +317,8 @@
 	.read = &ipl_parameter_read,
 };
 
-static ssize_t ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off,
-	size_t count)
+static ssize_t ipl_scp_data_read(struct kobject *kobj, struct bin_attribute *attr,
+				 char *buf, loff_t off, size_t count)
 {
 	unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len;
 	void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data;
@@ -337,7 +337,7 @@
 		.mode = S_IRUGO,
 	},
 	.size = PAGE_SIZE,
-	.read = &ipl_scp_data_read,
+	.read = ipl_scp_data_read,
 };
 
 /* FCP ipl device attributes */