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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Ben Skeggs <bskeggs@redhat.com>,
        Sasha Levin <alexander.levin@microsoft.com>
Subject: [PATCH 4.18 108/168] drm/nouveau: fix oops in client init failure path
Date:   Mon,  8 Oct 2018 20:31:28 +0200
Message-Id: <20181008175624.154890608@linuxfoundation.org>
In-Reply-To: <20181008175620.043587728@linuxfoundation.org>
References: <20181008175620.043587728@linuxfoundation.org>
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4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Skeggs <bskeggs@redhat.com>

[ Upstream commit a43b16dda2d7485f5c5aed075c1dc9785e339515 ]

The NV_ERROR macro requires drm->client to be initialised, which it may not
be at this stage of the init process.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/nouveau/nouveau_drm.c |   14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -230,7 +230,7 @@ nouveau_cli_init(struct nouveau_drm *drm
 		mutex_unlock(&drm->master.lock);
 	}
 	if (ret) {
-		NV_ERROR(drm, "Client allocation failed: %d\n", ret);
+		NV_PRINTK(err, cli, "Client allocation failed: %d\n", ret);
 		goto done;
 	}
 
@@ -240,37 +240,37 @@ nouveau_cli_init(struct nouveau_drm *drm
 			       }, sizeof(struct nv_device_v0),
 			       &cli->device);
 	if (ret) {
-		NV_ERROR(drm, "Device allocation failed: %d\n", ret);
+		NV_PRINTK(err, cli, "Device allocation failed: %d\n", ret);
 		goto done;
 	}
 
 	ret = nvif_mclass(&cli->device.object, mmus);
 	if (ret < 0) {
-		NV_ERROR(drm, "No supported MMU class\n");
+		NV_PRINTK(err, cli, "No supported MMU class\n");
 		goto done;
 	}
 
 	ret = nvif_mmu_init(&cli->device.object, mmus[ret].oclass, &cli->mmu);
 	if (ret) {
-		NV_ERROR(drm, "MMU allocation failed: %d\n", ret);
+		NV_PRINTK(err, cli, "MMU allocation failed: %d\n", ret);
 		goto done;
 	}
 
 	ret = nvif_mclass(&cli->mmu.object, vmms);
 	if (ret < 0) {
-		NV_ERROR(drm, "No supported VMM class\n");
+		NV_PRINTK(err, cli, "No supported VMM class\n");
 		goto done;
 	}
 
 	ret = nouveau_vmm_init(cli, vmms[ret].oclass, &cli->vmm);
 	if (ret) {
-		NV_ERROR(drm, "VMM allocation failed: %d\n", ret);
+		NV_PRINTK(err, cli, "VMM allocation failed: %d\n", ret);
 		goto done;
 	}
 
 	ret = nvif_mclass(&cli->mmu.object, mems);
 	if (ret < 0) {
-		NV_ERROR(drm, "No supported MEM class\n");
+		NV_PRINTK(err, cli, "No supported MEM class\n");
 		goto done;
 	}