From 9f494438d4bc4746831cb5289b9836c18e4bbf96 Mon Sep 17 00:00:00 2001 From: Julian Wiedmann Date: Fri, 20 Sep 2019 10:17:09 +0200 Subject: [PATCH] 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 Reviewed-by: Benjamin Block Reviewed-by: Jens Remus Signed-off-by: Vasily Gorbik --- arch/s390/include/asm/qdio.h | 2 +- drivers/s390/cio/qdio_setup.c | 2 +- drivers/s390/net/qeth_core_main.c | 3 +-- 3 files changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h index 78e8a888306d..e3f238e8c611 100644 --- a/arch/s390/include/asm/qdio.h +++ b/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))); /** diff --git a/drivers/s390/cio/qdio_setup.c b/drivers/s390/cio/qdio_setup.c index f4ca1d29d61b..cd164886132f 100644 --- a/drivers/s390/cio/qdio_setup.c +++ b/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; diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index a7868c8133ee..dda274351c21 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/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; -- 2.25.1