s390/qdio: clarify size of the QIB parm area

The QIB parm area is 128 bytes long. Current code consistently misuses
an _entirely unrelated_ QDIO constant, merely because it has the same
value. Stop doing so.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Benjamin Block <bblock@linux.ibm.com>
Reviewed-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

arch/s390/include/asm/qdio.h

@@ -111,7 +111,7 @@ struct qib {
 	/* private: */
 	u8 res[88];
 	/* public: */
-	u8 parm[QDIO_MAX_BUFFERS_PER_Q];
+	u8 parm[128];
 } __attribute__ ((packed, aligned(256)));
 
 /**

drivers/s390/cio/qdio_setup.c

@@ -113,7 +113,7 @@ static void set_impl_params(struct qdio_irq *irq_ptr,
 	irq_ptr->qib.pfmt = qib_param_field_format;
 	if (qib_param_field)
 		memcpy(irq_ptr->qib.parm, qib_param_field,
-		       QDIO_MAX_BUFFERS_PER_Q);
+		       sizeof(irq_ptr->qib.parm));
 
 	if (!input_slib_elements)
 		goto output;

drivers/s390/net/qeth_core_main.c

@@ -4715,8 +4715,7 @@ static int qeth_qdio_establish(struct qeth_card *card)
 
 	QETH_CARD_TEXT(card, 2, "qdioest");
 
-	qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q,
-				  GFP_KERNEL);
+	qib_param_field = kzalloc(FIELD_SIZEOF(struct qib, parm), GFP_KERNEL);
 	if (!qib_param_field) {
 		rc =  -ENOMEM;
 		goto out_free_nothing;