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Mon, 4 Oct 2021 13:47:34 +0000 Date: Mon, 4 Oct 2021 16:47:21 +0300 From: Dan Carpenter To: Rob Clark Cc: Sean Paul , David Airlie , Daniel Vetter , Stephen Boyd , Dmitry Baryshkov , Abhinav Kumar , Lee Jones , Jeykumar Sankaran , Archit Taneja , Jordan Crouse , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, kernel-janitors@vger.kernel.org Subject: [PATCH] drm/msm/disp: fix endian bug in debugfs code Message-ID: <20211004134721.GD11689@kili> Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Mailer: git-send-email haha only kidding User-Agent: Mutt/1.10.1 (2018-07-13) X-ClientProxiedBy: ZR0P278CA0027.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:1c::14) To MWHPR1001MB2365.namprd10.prod.outlook.com (2603:10b6:301:2d::28) MIME-Version: 1.0 Received: from kili (62.8.83.99) by ZR0P278CA0027.CHEP278.PROD.OUTLOOK.COM (2603:10a6:910:1c::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4566.15 via Frontend Transport; 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This will work in little endian systems, but the correct thing is to change the debugfs to use an unsigned long. Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support") Signed-off-by: Dan Carpenter --- You might wonder why this code has so many casts. It's required because this data is const. Which is fine because the file is read only. drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c index 21d20373eb8b..e645a886e3c6 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_vbif.c @@ -305,8 +305,8 @@ void dpu_debugfs_vbif_init(struct dpu_kms *dpu_kms, struct dentry *debugfs_root) debugfs_vbif = debugfs_create_dir(vbif_name, entry); - debugfs_create_u32("features", 0600, debugfs_vbif, - (u32 *)&vbif->features); + debugfs_create_ulong("features", 0600, debugfs_vbif, + (unsigned long *)&vbif->features); debugfs_create_u32("xin_halt_timeout", 0400, debugfs_vbif, (u32 *)&vbif->xin_halt_timeout); -- 2.20.1