vme: Adjust 48 checks for null pointers
MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The script “checkpatch.pl” pointed information out like the following. Comparison to NULL could be written … Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Martyn Welch <martyn@welchs.me.uk>
This commit is contained in:
Markus Elfring
Martyn Welch
parent
a384b2cc13
commit
61282c0498
1 changed files with 48 additions and 53 deletions
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@ -92,23 +92,23 @@ void *vme_alloc_consistent(struct vme_resource *resource, size_t size,
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{
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struct vme_bridge *bridge;
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if (resource == NULL) {
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if (!resource) {
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printk(KERN_ERR "No resource\n");
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return NULL;
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}
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bridge = find_bridge(resource);
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find bridge\n");
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return NULL;
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}
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if (bridge->parent == NULL) {
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if (!bridge->parent) {
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printk(KERN_ERR "Dev entry NULL for bridge %s\n", bridge->name);
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return NULL;
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}
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if (bridge->alloc_consistent == NULL) {
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if (!bridge->alloc_consistent) {
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printk(KERN_ERR "alloc_consistent not supported by bridge %s\n",
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bridge->name);
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return NULL;
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@ -132,23 +132,23 @@ void vme_free_consistent(struct vme_resource *resource, size_t size,
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{
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struct vme_bridge *bridge;
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if (resource == NULL) {
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if (!resource) {
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printk(KERN_ERR "No resource\n");
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return;
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}
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bridge = find_bridge(resource);
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find bridge\n");
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return;
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}
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if (bridge->parent == NULL) {
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if (!bridge->parent) {
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printk(KERN_ERR "Dev entry NULL for bridge %s\n", bridge->name);
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return;
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}
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if (bridge->free_consistent == NULL) {
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if (!bridge->free_consistent) {
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printk(KERN_ERR "free_consistent not supported by bridge %s\n",
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bridge->name);
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return;
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@ -303,7 +303,7 @@ struct vme_resource *vme_slave_request(struct vme_dev *vdev, u32 address,
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struct vme_resource *resource = NULL;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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goto err_bus;
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}
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@ -313,7 +313,7 @@ struct vme_resource *vme_slave_request(struct vme_dev *vdev, u32 address,
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slave_image = list_entry(slave_pos,
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struct vme_slave_resource, list);
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if (slave_image == NULL) {
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if (!slave_image) {
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printk(KERN_ERR "Registered NULL Slave resource\n");
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continue;
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}
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@ -333,7 +333,7 @@ struct vme_resource *vme_slave_request(struct vme_dev *vdev, u32 address,
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}
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/* No free image */
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if (allocated_image == NULL)
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if (!allocated_image)
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goto err_image;
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resource = kmalloc(sizeof(*resource), GFP_KERNEL);
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@ -388,7 +388,7 @@ int vme_slave_set(struct vme_resource *resource, int enabled,
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image = list_entry(resource->entry, struct vme_slave_resource, list);
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if (bridge->slave_set == NULL) {
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if (!bridge->slave_set) {
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printk(KERN_ERR "Function not supported\n");
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return -ENOSYS;
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}
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@ -437,7 +437,7 @@ int vme_slave_get(struct vme_resource *resource, int *enabled,
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image = list_entry(resource->entry, struct vme_slave_resource, list);
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if (bridge->slave_get == NULL) {
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if (!bridge->slave_get) {
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printk(KERN_ERR "vme_slave_get not supported\n");
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return -EINVAL;
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}
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@ -464,7 +464,7 @@ void vme_slave_free(struct vme_resource *resource)
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slave_image = list_entry(resource->entry, struct vme_slave_resource,
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list);
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if (slave_image == NULL) {
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if (!slave_image) {
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printk(KERN_ERR "Can't find slave resource\n");
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return;
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}
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@ -504,7 +504,7 @@ struct vme_resource *vme_master_request(struct vme_dev *vdev, u32 address,
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struct vme_resource *resource = NULL;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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goto err_bus;
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}
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@ -514,7 +514,7 @@ struct vme_resource *vme_master_request(struct vme_dev *vdev, u32 address,
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master_image = list_entry(master_pos,
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struct vme_master_resource, list);
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if (master_image == NULL) {
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if (!master_image) {
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printk(KERN_WARNING "Registered NULL master resource\n");
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continue;
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}
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@ -535,7 +535,7 @@ struct vme_resource *vme_master_request(struct vme_dev *vdev, u32 address,
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}
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/* Check to see if we found a resource */
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if (allocated_image == NULL) {
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if (!allocated_image) {
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printk(KERN_ERR "Can't find a suitable resource\n");
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goto err_image;
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}
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@ -592,7 +592,7 @@ int vme_master_set(struct vme_resource *resource, int enabled,
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image = list_entry(resource->entry, struct vme_master_resource, list);
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if (bridge->master_set == NULL) {
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if (!bridge->master_set) {
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printk(KERN_WARNING "vme_master_set not supported\n");
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return -EINVAL;
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}
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@ -642,7 +642,7 @@ int vme_master_get(struct vme_resource *resource, int *enabled,
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image = list_entry(resource->entry, struct vme_master_resource, list);
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if (bridge->master_get == NULL) {
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if (!bridge->master_get) {
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printk(KERN_WARNING "%s not supported\n", __func__);
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return -EINVAL;
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}
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@ -674,7 +674,7 @@ ssize_t vme_master_read(struct vme_resource *resource, void *buf, size_t count,
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struct vme_master_resource *image;
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size_t length;
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if (bridge->master_read == NULL) {
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if (!bridge->master_read) {
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printk(KERN_WARNING "Reading from resource not supported\n");
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return -EINVAL;
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}
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@ -723,7 +723,7 @@ ssize_t vme_master_write(struct vme_resource *resource, void *buf,
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struct vme_master_resource *image;
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size_t length;
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if (bridge->master_write == NULL) {
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if (!bridge->master_write) {
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printk(KERN_WARNING "Writing to resource not supported\n");
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return -EINVAL;
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}
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@ -774,7 +774,7 @@ unsigned int vme_master_rmw(struct vme_resource *resource, unsigned int mask,
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struct vme_bridge *bridge = find_bridge(resource);
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struct vme_master_resource *image;
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if (bridge->master_rmw == NULL) {
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if (!bridge->master_rmw) {
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printk(KERN_WARNING "Writing to resource not supported\n");
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return -EINVAL;
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}
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@ -844,7 +844,7 @@ void vme_master_free(struct vme_resource *resource)
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master_image = list_entry(resource->entry, struct vme_master_resource,
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list);
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if (master_image == NULL) {
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if (!master_image) {
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printk(KERN_ERR "Can't find master resource\n");
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return;
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}
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@ -884,7 +884,7 @@ struct vme_resource *vme_dma_request(struct vme_dev *vdev, u32 route)
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printk(KERN_ERR "No VME resource Attribute tests done\n");
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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goto err_bus;
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}
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@ -893,8 +893,7 @@ struct vme_resource *vme_dma_request(struct vme_dev *vdev, u32 route)
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list_for_each(dma_pos, &bridge->dma_resources) {
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dma_ctrlr = list_entry(dma_pos,
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struct vme_dma_resource, list);
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if (dma_ctrlr == NULL) {
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if (!dma_ctrlr) {
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printk(KERN_ERR "Registered NULL DMA resource\n");
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continue;
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}
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@ -913,7 +912,7 @@ struct vme_resource *vme_dma_request(struct vme_dev *vdev, u32 route)
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}
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/* Check to see if we found a resource */
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if (allocated_ctrlr == NULL)
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if (!allocated_ctrlr)
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goto err_ctrlr;
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resource = kmalloc(sizeof(*resource), GFP_KERNEL);
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@ -1128,7 +1127,7 @@ int vme_dma_list_add(struct vme_dma_list *list, struct vme_dma_attr *src,
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struct vme_bridge *bridge = list->parent->parent;
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int retval;
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if (bridge->dma_list_add == NULL) {
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if (!bridge->dma_list_add) {
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printk(KERN_WARNING "Link List DMA generation not supported\n");
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return -EINVAL;
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}
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@ -1161,7 +1160,7 @@ int vme_dma_list_exec(struct vme_dma_list *list)
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struct vme_bridge *bridge = list->parent->parent;
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int retval;
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if (bridge->dma_list_exec == NULL) {
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if (!bridge->dma_list_exec) {
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printk(KERN_ERR "Link List DMA execution not supported\n");
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return -EINVAL;
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}
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@ -1190,7 +1189,7 @@ int vme_dma_list_free(struct vme_dma_list *list)
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struct vme_bridge *bridge = list->parent->parent;
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int retval;
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if (bridge->dma_list_empty == NULL) {
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if (!bridge->dma_list_empty) {
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printk(KERN_WARNING "Emptying of Link Lists not supported\n");
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return -EINVAL;
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}
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@ -1322,8 +1321,7 @@ void vme_irq_handler(struct vme_bridge *bridge, int level, int statid)
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call = bridge->irq[level - 1].callback[statid].func;
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priv_data = bridge->irq[level - 1].callback[statid].priv_data;
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if (call != NULL)
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if (call)
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call(level, statid, priv_data);
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else
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printk(KERN_WARNING "Spurious VME interrupt, level:%x, vector:%x\n",
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@ -1354,7 +1352,7 @@ int vme_irq_request(struct vme_dev *vdev, int level, int statid,
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struct vme_bridge *bridge;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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return -EINVAL;
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}
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@ -1364,7 +1362,7 @@ int vme_irq_request(struct vme_dev *vdev, int level, int statid,
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return -EINVAL;
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}
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if (bridge->irq_set == NULL) {
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if (!bridge->irq_set) {
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printk(KERN_ERR "Configuring interrupts not supported\n");
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return -EINVAL;
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}
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@ -1403,7 +1401,7 @@ void vme_irq_free(struct vme_dev *vdev, int level, int statid)
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struct vme_bridge *bridge;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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return;
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}
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@ -1413,7 +1411,7 @@ void vme_irq_free(struct vme_dev *vdev, int level, int statid)
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return;
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}
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if (bridge->irq_set == NULL) {
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if (!bridge->irq_set) {
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printk(KERN_ERR "Configuring interrupts not supported\n");
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return;
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}
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@ -1450,7 +1448,7 @@ int vme_irq_generate(struct vme_dev *vdev, int level, int statid)
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struct vme_bridge *bridge;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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return -EINVAL;
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}
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@ -1460,7 +1458,7 @@ int vme_irq_generate(struct vme_dev *vdev, int level, int statid)
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return -EINVAL;
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}
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if (bridge->irq_generate == NULL) {
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if (!bridge->irq_generate) {
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printk(KERN_WARNING "Interrupt generation not supported\n");
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return -EINVAL;
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}
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@ -1488,7 +1486,7 @@ struct vme_resource *vme_lm_request(struct vme_dev *vdev)
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struct vme_resource *resource = NULL;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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goto err_bus;
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}
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@ -1497,8 +1495,7 @@ struct vme_resource *vme_lm_request(struct vme_dev *vdev)
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list_for_each(lm_pos, &bridge->lm_resources) {
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lm = list_entry(lm_pos,
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struct vme_lm_resource, list);
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if (lm == NULL) {
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if (!lm) {
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printk(KERN_ERR "Registered NULL Location Monitor resource\n");
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continue;
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}
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@ -1515,7 +1512,7 @@ struct vme_resource *vme_lm_request(struct vme_dev *vdev)
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}
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/* Check to see if we found a resource */
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if (allocated_lm == NULL)
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if (!allocated_lm)
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goto err_lm;
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resource = kmalloc(sizeof(*resource), GFP_KERNEL);
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@ -1591,7 +1588,7 @@ int vme_lm_set(struct vme_resource *resource, unsigned long long lm_base,
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lm = list_entry(resource->entry, struct vme_lm_resource, list);
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if (bridge->lm_set == NULL) {
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if (!bridge->lm_set) {
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printk(KERN_ERR "vme_lm_set not supported\n");
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return -EINVAL;
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}
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@ -1627,7 +1624,7 @@ int vme_lm_get(struct vme_resource *resource, unsigned long long *lm_base,
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lm = list_entry(resource->entry, struct vme_lm_resource, list);
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if (bridge->lm_get == NULL) {
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if (!bridge->lm_get) {
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printk(KERN_ERR "vme_lm_get not supported\n");
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return -EINVAL;
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}
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@ -1664,7 +1661,7 @@ int vme_lm_attach(struct vme_resource *resource, int monitor,
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lm = list_entry(resource->entry, struct vme_lm_resource, list);
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if (bridge->lm_attach == NULL) {
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if (!bridge->lm_attach) {
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printk(KERN_ERR "vme_lm_attach not supported\n");
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return -EINVAL;
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}
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@ -1697,7 +1694,7 @@ int vme_lm_detach(struct vme_resource *resource, int monitor)
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lm = list_entry(resource->entry, struct vme_lm_resource, list);
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if (bridge->lm_detach == NULL) {
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if (!bridge->lm_detach) {
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printk(KERN_ERR "vme_lm_detach not supported\n");
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return -EINVAL;
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}
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@ -1759,12 +1756,12 @@ int vme_slot_num(struct vme_dev *vdev)
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struct vme_bridge *bridge;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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printk(KERN_ERR "Can't find VME bus\n");
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return -EINVAL;
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}
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if (bridge->slot_get == NULL) {
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if (!bridge->slot_get) {
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printk(KERN_WARNING "vme_slot_num not supported\n");
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return -EINVAL;
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}
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@ -1787,7 +1784,7 @@ int vme_bus_num(struct vme_dev *vdev)
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struct vme_bridge *bridge;
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bridge = vdev->bridge;
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if (bridge == NULL) {
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if (!bridge) {
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pr_err("Can't find VME bus\n");
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return -EINVAL;
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}
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@ -2004,8 +2001,7 @@ static int vme_bus_probe(struct device *dev)
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struct vme_dev *vdev = dev_to_vme_dev(dev);
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driver = dev->platform_data;
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if (driver->probe != NULL)
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if (driver->probe)
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retval = driver->probe(vdev);
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return retval;
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@ -2018,8 +2014,7 @@ static int vme_bus_remove(struct device *dev)
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struct vme_dev *vdev = dev_to_vme_dev(dev);
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driver = dev->platform_data;
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if (driver->remove != NULL)
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if (driver->remove)
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retval = driver->remove(vdev);
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return retval;
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