linux-kernel - [PATCH] staging: fsl-mc/dpio: Skip endianness conversion in portal config

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Date:   Thu, 20 Jul 2017 14:48:28 +0000
From:   Bogdan Purcareata <bogdan.purcareata@....com>
To:     <Roy.Pledge@....com>, <laurentiu.tudor@....com>
CC:     <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>,
        <devel@...verdev.osuosl.org>
Subject: [PATCH] staging: fsl-mc/dpio: Skip endianness conversion in portal config

Writing to the register using writel does the CPU to LE conversion down the
line, so it's not required here. Doing it breaks portal configuration on
big endian kernels.

Signed-off-by: Bogdan Purcareata <bogdan.purcareata@....com>
---
 drivers/staging/fsl-mc/bus/dpio/qbman-portal.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c b/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
index 7988612..163bdac 100644
--- a/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
+++ b/drivers/staging/fsl-mc/bus/dpio/qbman-portal.c
@@ -136,18 +136,18 @@ static inline u32 qbman_set_swp_cfg(u8 max_fill, u8 wn,	u8 est, u8 rpm, u8 dcm,
 				    u8 epm, int sd, int sp, int se,
 				    int dp, int de, int ep)
 {
-	return cpu_to_le32 (max_fill << SWP_CFG_DQRR_MF_SHIFT |
-			    est << SWP_CFG_EST_SHIFT |
-			    wn << SWP_CFG_WN_SHIFT |
-			    rpm << SWP_CFG_RPM_SHIFT |
-			    dcm << SWP_CFG_DCM_SHIFT |
-			    epm << SWP_CFG_EPM_SHIFT |
-			    sd << SWP_CFG_SD_SHIFT |
-			    sp << SWP_CFG_SP_SHIFT |
-			    se << SWP_CFG_SE_SHIFT |
-			    dp << SWP_CFG_DP_SHIFT |
-			    de << SWP_CFG_DE_SHIFT |
-			    ep << SWP_CFG_EP_SHIFT);
+	return (max_fill << SWP_CFG_DQRR_MF_SHIFT |
+		est << SWP_CFG_EST_SHIFT |
+		wn << SWP_CFG_WN_SHIFT |
+		rpm << SWP_CFG_RPM_SHIFT |
+		dcm << SWP_CFG_DCM_SHIFT |
+		epm << SWP_CFG_EPM_SHIFT |
+		sd << SWP_CFG_SD_SHIFT |
+		sp << SWP_CFG_SP_SHIFT |
+		se << SWP_CFG_SE_SHIFT |
+		dp << SWP_CFG_DP_SHIFT |
+		de << SWP_CFG_DE_SHIFT |
+		ep << SWP_CFG_EP_SHIFT);
 }
 
 /**
-- 
2.7.4