linux-kernel - [PATCH 1/4] staging: fsl-mc/dpio: Fix incorrect casts

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Date:   Mon, 26 Feb 2018 10:28:04 -0600
From:   Ioana Radulescu <ruxandra.radulescu@....com>
To:     gregkh@...uxfoundation.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        roy.pledge@....com, laurentiu.tudor@....com,
        bogdan.purcareata@....com
Subject: [PATCH 1/4] staging: fsl-mc/dpio: Fix incorrect casts

The DPIO driver incorrectly assumes virtual addresses are always
64b long, which causes compiler errors when building for a 32b
platform.

Fix this by using explicit casts to uintptr_t where necessary.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@....com>
---
 drivers/staging/fsl-mc/bus/dpio/dpio-service.c | 4 ++--
 drivers/staging/fsl-mc/bus/dpio/qbman-portal.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/fsl-mc/bus/dpio/dpio-service.c b/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
index 1acff7e..14ed2be 100644
--- a/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
+++ b/drivers/staging/fsl-mc/bus/dpio/dpio-service.c
@@ -192,7 +192,7 @@ irqreturn_t dpaa2_io_irq(struct dpaa2_io *obj)
 			u64 q64;
 
 			q64 = qbman_result_SCN_ctx(dq);
-			ctx = (void *)q64;
+			ctx = (void *)(uintptr_t)q64;
 			ctx->cb(ctx);
 		} else {
 			pr_crit("fsl-mc-dpio: Unrecognised/ignored DQRR entry\n");
@@ -237,7 +237,7 @@ int dpaa2_io_service_register(struct dpaa2_io *d,
 		return -ENODEV;
 
 	ctx->dpio_id = d->dpio_desc.dpio_id;
-	ctx->qman64 = (u64)ctx;
+	ctx->qman64 = (u64)(uintptr_t)ctx;
 	ctx->dpio_private = d;
 	spin_lock_irqsave(&d->lock_notifications, irqflags);
 	list_add(&ctx->node, &d->notifications);
diff --git a/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c b/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
index 376e9ed..f57c151 100644
--- a/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
+++ b/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
@@ -497,7 +497,7 @@ void qbman_pull_desc_set_storage(struct qbman_pull_desc *d,
 				 int stash)
 {
 	/* save the virtual address */
-	d->rsp_addr_virt = (u64)storage;
+	d->rsp_addr_virt = (u64)(uintptr_t)storage;
 
 	if (!storage) {
 		d->verb &= ~(1 << QB_VDQCR_VERB_RLS_SHIFT);
@@ -590,7 +590,7 @@ int qbman_swp_pull(struct qbman_swp *s, struct qbman_pull_desc *d)
 		atomic_inc(&s->vdq.available);
 		return -EBUSY;
 	}
-	s->vdq.storage = (void *)d->rsp_addr_virt;
+	s->vdq.storage = (void *)(uintptr_t)d->rsp_addr_virt;
 	p = qbman_get_cmd(s, QBMAN_CENA_SWP_VDQCR);
 	p->numf = d->numf;
 	p->tok = QMAN_DQ_TOKEN_VALID;
-- 
2.7.4