linux-kernel - [PATCH 4/5] staging: fsl-mc/dpio: Fix incorrect masking

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Message-Id: <20180306174348.26095-5-ruxandra.radulescu@nxp.com>
Date:   Tue,  6 Mar 2018 11:43:47 -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
Subject: [PATCH 4/5] staging: fsl-mc/dpio: Fix incorrect masking

In qbman_swp_alt_fq_state(), we need to mask the fqid value
before converting it to little endian, otherwise we write a
wrong value to hardware when running in big endian mode.

Signed-off-by: Ioana Radulescu <ruxandra.radulescu@....com>
---
 drivers/staging/fsl-mc/bus/dpio/qbman-portal.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c b/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
index 377f4d9..7e55b56 100644
--- a/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
+++ b/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
@@ -927,7 +927,7 @@ int qbman_swp_alt_fq_state(struct qbman_swp *s, u32 fqid,
 	if (!p)
 		return -EBUSY;
 
-	p->fqid = cpu_to_le32(fqid) & ALT_FQ_FQID_MASK;
+	p->fqid = cpu_to_le32(fqid & ALT_FQ_FQID_MASK);
 
 	/* Complete the management command */
 	r = qbman_swp_mc_complete(s, p, alt_fq_verb);
-- 
2.7.4