drm/vmwgfx: Fix NULL pointer comparison

Replace direct comparisons to NULL i.e.
'x == NULL' with '!x'. As per coding standard.

Signed-off-by: Ravikant B Sharma <ravikant.s2@samsung.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Signed-off-by: Sinclair Yeh <syeh@vmware.com>

drivers/gpu/drm/vmwgfx/vmwgfx_cmdbuf_res.c

@@ -205,7 +205,7 @@ int vmw_cmdbuf_res_add(struct vmw_cmdbuf_res_manager *man,
 	int ret;
 
 	cres = kzalloc(sizeof(*cres), GFP_KERNEL);
-	if (unlikely(cres == NULL))
+	if (unlikely(!cres))
 		return -ENOMEM;
 
 	cres->hash.key = user_key | (res_type << 24);
@@ -291,7 +291,7 @@ vmw_cmdbuf_res_man_create(struct vmw_private *dev_priv)
 	int ret;
 
 	man = kzalloc(sizeof(*man), GFP_KERNEL);
-	if (man == NULL)
+	if (!man)
 		return ERR_PTR(-ENOMEM);
 
 	man->dev_priv = dev_priv;

drivers/gpu/drm/vmwgfx/vmwgfx_context.c

@@ -776,7 +776,7 @@ static int vmw_context_define(struct drm_device *dev, void *data,
 	}
 
 	ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
-	if (unlikely(ctx == NULL)) {
+	if (unlikely(!ctx)) {
 		ttm_mem_global_free(vmw_mem_glob(dev_priv),
 				    vmw_user_context_size);
 		ret = -ENOMEM;

drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c

@@ -583,7 +583,7 @@ struct vmw_resource *vmw_cotable_alloc(struct vmw_private *dev_priv,
 		return ERR_PTR(ret);
 
 	vcotbl = kzalloc(sizeof(*vcotbl), GFP_KERNEL);
-	if (unlikely(vcotbl == NULL)) {
+	if (unlikely(!vcotbl)) {
 		ret = -ENOMEM;
 		goto out_no_alloc;
 	}

drivers/gpu/drm/vmwgfx/vmwgfx_drv.c

@@ -630,7 +630,7 @@ static int vmw_driver_load(struct drm_device *dev, unsigned long chipset)
 	char host_log[100] = {0};
 
 	dev_priv = kzalloc(sizeof(*dev_priv), GFP_KERNEL);
-	if (unlikely(dev_priv == NULL)) {
+	if (unlikely(!dev_priv)) {
 		DRM_ERROR("Failed allocating a device private struct.\n");
 		return -ENOMEM;
 	}
@@ -1035,7 +1035,7 @@ static int vmw_driver_open(struct drm_device *dev, struct drm_file *file_priv)
 	int ret = -ENOMEM;
 
 	vmw_fp = kzalloc(sizeof(*vmw_fp), GFP_KERNEL);
-	if (unlikely(vmw_fp == NULL))
+	if (unlikely(!vmw_fp))
 		return ret;
 
 	vmw_fp->tfile = ttm_object_file_init(dev_priv->tdev, 10);
@@ -1196,7 +1196,7 @@ static int vmw_master_create(struct drm_device *dev,
 	struct vmw_master *vmaster;
 
 	vmaster = kzalloc(sizeof(*vmaster), GFP_KERNEL);
-	if (unlikely(vmaster == NULL))
+	if (unlikely(!vmaster))
 		return -ENOMEM;
 
 	vmw_master_init(vmaster);

drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c

@@ -264,7 +264,7 @@ static int vmw_resource_val_add(struct vmw_sw_context *sw_context,
 	}
 
 	node = kzalloc(sizeof(*node), GFP_KERNEL);
-	if (unlikely(node == NULL)) {
+	if (unlikely(!node)) {
 		DRM_ERROR("Failed to allocate a resource validation "
 			  "entry.\n");
 		return -ENOMEM;
@@ -452,7 +452,7 @@ static int vmw_resource_relocation_add(struct list_head *list,
 	struct vmw_resource_relocation *rel;
 
 	rel = kmalloc(sizeof(*rel), GFP_KERNEL);
-	if (unlikely(rel == NULL)) {
+	if (unlikely(!rel)) {
 		DRM_ERROR("Failed to allocate a resource relocation.\n");
 		return -ENOMEM;
 	}

drivers/gpu/drm/vmwgfx/vmwgfx_fence.c

@@ -284,7 +284,7 @@ struct vmw_fence_manager *vmw_fence_manager_init(struct vmw_private *dev_priv)
 {
 	struct vmw_fence_manager *fman = kzalloc(sizeof(*fman), GFP_KERNEL);
 
-	if (unlikely(fman == NULL))
+	if (unlikely(!fman))
 		return NULL;
 
 	fman->dev_priv = dev_priv;
@@ -541,7 +541,7 @@ int vmw_fence_create(struct vmw_fence_manager *fman,
  	int ret;
 
 	fence = kzalloc(sizeof(*fence), GFP_KERNEL);
-	if (unlikely(fence == NULL))
+	if (unlikely(!fence))
 		return -ENOMEM;
 
 	ret = vmw_fence_obj_init(fman, fence, seqno,
@@ -606,7 +606,7 @@ int vmw_user_fence_create(struct drm_file *file_priv,
 		return ret;
 
 	ufence = kzalloc(sizeof(*ufence), GFP_KERNEL);
-	if (unlikely(ufence == NULL)) {
+	if (unlikely(!ufence)) {
 		ret = -ENOMEM;
 		goto out_no_object;
 	}
@@ -966,7 +966,7 @@ int vmw_event_fence_action_queue(struct drm_file *file_priv,
 	struct vmw_fence_manager *fman = fman_from_fence(fence);
 
 	eaction = kzalloc(sizeof(*eaction), GFP_KERNEL);
-	if (unlikely(eaction == NULL))
+	if (unlikely(!eaction))
 		return -ENOMEM;
 
 	eaction->event = event;
@@ -1002,7 +1002,7 @@ static int vmw_event_fence_action_create(struct drm_file *file_priv,
 	int ret;
 
 	event = kzalloc(sizeof(*event), GFP_KERNEL);
-	if (unlikely(event == NULL)) {
+	if (unlikely(!event)) {
 		DRM_ERROR("Failed to allocate an event.\n");
 		ret = -ENOMEM;
 		goto out_no_space;

drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c

@@ -121,7 +121,7 @@ static int vmw_gmrid_man_init(struct ttm_mem_type_manager *man,
 	struct vmwgfx_gmrid_man *gman =
 		kzalloc(sizeof(*gman), GFP_KERNEL);
 
-	if (unlikely(gman == NULL))
+	if (unlikely(!gman))
 		return -ENOMEM;
 
 	spin_lock_init(&gman->lock);

drivers/gpu/drm/vmwgfx/vmwgfx_mob.c

@@ -320,14 +320,14 @@ int vmw_otables_setup(struct vmw_private *dev_priv)
 
 	if (dev_priv->has_dx) {
 		*otables = kmemdup(dx_tables, sizeof(dx_tables), GFP_KERNEL);
-		if (*otables == NULL)
+		if (!(*otables))
 			return -ENOMEM;
 
 		dev_priv->otable_batch.num_otables = ARRAY_SIZE(dx_tables);
 	} else {
 		*otables = kmemdup(pre_dx_tables, sizeof(pre_dx_tables),
 				   GFP_KERNEL);
-		if (*otables == NULL)
+		if (!(*otables))
 			return -ENOMEM;
 
 		dev_priv->otable_batch.num_otables = ARRAY_SIZE(pre_dx_tables);
@@ -407,7 +407,7 @@ struct vmw_mob *vmw_mob_create(unsigned long data_pages)
 {
 	struct vmw_mob *mob = kzalloc(sizeof(*mob), GFP_KERNEL);
 
-	if (unlikely(mob == NULL))
+	if (unlikely(!mob))
 		return NULL;
 
 	mob->num_pages = vmw_mob_calculate_pt_pages(data_pages);

drivers/gpu/drm/vmwgfx/vmwgfx_msg.c

@@ -244,7 +244,7 @@ static int vmw_recv_msg(struct rpc_channel *channel, void **msg,
 
 		reply_len = ebx;
 		reply     = kzalloc(reply_len + 1, GFP_KERNEL);
-		if (reply == NULL) {
+		if (!reply) {
 			DRM_ERROR("Cannot allocate memory for reply\n");
 			return -ENOMEM;
 		}
@@ -340,7 +340,7 @@ int vmw_host_get_guestinfo(const char *guest_info_param,
 
 	msg_len = strlen(guest_info_param) + strlen("info-get ") + 1;
 	msg = kzalloc(msg_len, GFP_KERNEL);
-	if (msg == NULL) {
+	if (!msg) {
 		DRM_ERROR("Cannot allocate memory to get %s", guest_info_param);
 		return -ENOMEM;
 	}
@@ -400,7 +400,7 @@ int vmw_host_log(const char *log)
 
 	msg_len = strlen(log) + strlen("log ") + 1;
 	msg = kzalloc(msg_len, GFP_KERNEL);
-	if (msg == NULL) {
+	if (!msg) {
 		DRM_ERROR("Cannot allocate memory for log message\n");
 		return -ENOMEM;
 	}

drivers/gpu/drm/vmwgfx/vmwgfx_resource.c

@@ -446,7 +446,7 @@ int vmw_user_dmabuf_alloc(struct vmw_private *dev_priv,
 	int ret;
 
 	user_bo = kzalloc(sizeof(*user_bo), GFP_KERNEL);
-	if (unlikely(user_bo == NULL)) {
+	if (unlikely(!user_bo)) {
 		DRM_ERROR("Failed to allocate a buffer.\n");
 		return -ENOMEM;
 	}
@@ -836,7 +836,7 @@ static int vmw_resource_buf_alloc(struct vmw_resource *res,
 	}
 
 	backup = kzalloc(sizeof(*backup), GFP_KERNEL);
-	if (unlikely(backup == NULL))
+	if (unlikely(!backup))
 		return -ENOMEM;
 
 	ret = vmw_dmabuf_init(res->dev_priv, backup, res->backup_size,

drivers/gpu/drm/vmwgfx/vmwgfx_shader.c

@@ -750,7 +750,7 @@ static int vmw_user_shader_alloc(struct vmw_private *dev_priv,
 	}
 
 	ushader = kzalloc(sizeof(*ushader), GFP_KERNEL);
-	if (unlikely(ushader == NULL)) {
+	if (unlikely(!ushader)) {
 		ttm_mem_global_free(vmw_mem_glob(dev_priv),
 				    vmw_user_shader_size);
 		ret = -ENOMEM;
@@ -820,7 +820,7 @@ static struct vmw_resource *vmw_shader_alloc(struct vmw_private *dev_priv,
 	}
 
 	shader = kzalloc(sizeof(*shader), GFP_KERNEL);
-	if (unlikely(shader == NULL)) {
+	if (unlikely(!shader)) {
 		ttm_mem_global_free(vmw_mem_glob(dev_priv),
 				    vmw_shader_size);
 		ret = -ENOMEM;
@@ -980,7 +980,7 @@ int vmw_compat_shader_add(struct vmw_private *dev_priv,
 
 	/* Allocate and pin a DMA buffer */
 	buf = kzalloc(sizeof(*buf), GFP_KERNEL);
-	if (unlikely(buf == NULL))
+	if (unlikely(!buf))
 		return -ENOMEM;
 
 	ret = vmw_dmabuf_init(dev_priv, buf, size, &vmw_sys_ne_placement,