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path: root/drivers/vme/bridges/vme_ca91cx42.c
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Diffstat (limited to 'drivers/vme/bridges/vme_ca91cx42.c')
-rw-r--r--drivers/vme/bridges/vme_ca91cx42.c73
1 files changed, 26 insertions, 47 deletions
diff --git a/drivers/vme/bridges/vme_ca91cx42.c b/drivers/vme/bridges/vme_ca91cx42.c
index 7cc51223db1c..5dd284008630 100644
--- a/drivers/vme/bridges/vme_ca91cx42.c
+++ b/drivers/vme/bridges/vme_ca91cx42.c
@@ -511,7 +511,7 @@ static int ca91cx42_alloc_resource(struct vme_master_resource *image,
ca91cx42_bridge = image->parent;
/* Find pci_dev container of dev */
- if (ca91cx42_bridge->parent == NULL) {
+ if (!ca91cx42_bridge->parent) {
dev_err(ca91cx42_bridge->parent, "Dev entry NULL\n");
return -EINVAL;
}
@@ -529,14 +529,12 @@ static int ca91cx42_alloc_resource(struct vme_master_resource *image,
image->kern_base = NULL;
kfree(image->bus_resource.name);
release_resource(&image->bus_resource);
- memset(&image->bus_resource, 0, sizeof(struct resource));
+ memset(&image->bus_resource, 0, sizeof(image->bus_resource));
}
- if (image->bus_resource.name == NULL) {
+ if (!image->bus_resource.name) {
image->bus_resource.name = kmalloc(VMENAMSIZ+3, GFP_ATOMIC);
- if (image->bus_resource.name == NULL) {
- dev_err(ca91cx42_bridge->parent, "Unable to allocate "
- "memory for resource name\n");
+ if (!image->bus_resource.name) {
retval = -ENOMEM;
goto err_name;
}
@@ -562,7 +560,7 @@ static int ca91cx42_alloc_resource(struct vme_master_resource *image,
image->kern_base = ioremap_nocache(
image->bus_resource.start, size);
- if (image->kern_base == NULL) {
+ if (!image->kern_base) {
dev_err(ca91cx42_bridge->parent, "Failed to remap resource\n");
retval = -ENOMEM;
goto err_remap;
@@ -574,7 +572,7 @@ err_remap:
release_resource(&image->bus_resource);
err_resource:
kfree(image->bus_resource.name);
- memset(&image->bus_resource, 0, sizeof(struct resource));
+ memset(&image->bus_resource, 0, sizeof(image->bus_resource));
err_name:
return retval;
}
@@ -588,7 +586,7 @@ static void ca91cx42_free_resource(struct vme_master_resource *image)
image->kern_base = NULL;
release_resource(&image->bus_resource);
kfree(image->bus_resource.name);
- memset(&image->bus_resource, 0, sizeof(struct resource));
+ memset(&image->bus_resource, 0, sizeof(image->bus_resource));
}
@@ -1036,10 +1034,8 @@ static int ca91cx42_dma_list_add(struct vme_dma_list *list,
dev = list->parent->parent->parent;
/* XXX descriptor must be aligned on 64-bit boundaries */
- entry = kmalloc(sizeof(struct ca91cx42_dma_entry), GFP_KERNEL);
- if (entry == NULL) {
- dev_err(dev, "Failed to allocate memory for dma resource "
- "structure\n");
+ entry = kmalloc(sizeof(*entry), GFP_KERNEL);
+ if (!entry) {
retval = -ENOMEM;
goto err_mem;
}
@@ -1052,7 +1048,7 @@ static int ca91cx42_dma_list_add(struct vme_dma_list *list,
goto err_align;
}
- memset(&entry->descriptor, 0, sizeof(struct ca91cx42_dma_descriptor));
+ memset(&entry->descriptor, 0, sizeof(entry->descriptor));
if (dest->type == VME_DMA_VME) {
entry->descriptor.dctl |= CA91CX42_DCTL_L2V;
@@ -1323,7 +1319,7 @@ static int ca91cx42_lm_set(struct vme_lm_resource *lm,
/* If we already have a callback attached, we can't move it! */
for (i = 0; i < lm->monitors; i++) {
- if (bridge->lm_callback[i] != NULL) {
+ if (bridge->lm_callback[i]) {
mutex_unlock(&lm->mtx);
dev_err(dev, "Location monitor callback attached, "
"can't reset\n");
@@ -1432,7 +1428,7 @@ static int ca91cx42_lm_attach(struct vme_lm_resource *lm, int monitor,
}
/* Check that a callback isn't already attached */
- if (bridge->lm_callback[monitor] != NULL) {
+ if (bridge->lm_callback[monitor]) {
mutex_unlock(&lm->mtx);
dev_err(dev, "Existing callback attached\n");
return -EBUSY;
@@ -1567,7 +1563,7 @@ static int ca91cx42_crcsr_init(struct vme_bridge *ca91cx42_bridge,
/* Allocate mem for CR/CSR image */
bridge->crcsr_kernel = pci_zalloc_consistent(pdev, VME_CRCSR_BUF_SIZE,
&bridge->crcsr_bus);
- if (bridge->crcsr_kernel == NULL) {
+ if (!bridge->crcsr_kernel) {
dev_err(&pdev->dev, "Failed to allocate memory for CR/CSR "
"image\n");
return -ENOMEM;
@@ -1618,21 +1614,15 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* We want to support more than one of each bridge so we need to
* dynamically allocate the bridge structure
*/
- ca91cx42_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL);
-
- if (ca91cx42_bridge == NULL) {
- dev_err(&pdev->dev, "Failed to allocate memory for device "
- "structure\n");
+ ca91cx42_bridge = kzalloc(sizeof(*ca91cx42_bridge), GFP_KERNEL);
+ if (!ca91cx42_bridge) {
retval = -ENOMEM;
goto err_struct;
}
vme_init_bridge(ca91cx42_bridge);
- ca91cx42_device = kzalloc(sizeof(struct ca91cx42_driver), GFP_KERNEL);
-
- if (ca91cx42_device == NULL) {
- dev_err(&pdev->dev, "Failed to allocate memory for device "
- "structure\n");
+ ca91cx42_device = kzalloc(sizeof(*ca91cx42_device), GFP_KERNEL);
+ if (!ca91cx42_device) {
retval = -ENOMEM;
goto err_driver;
}
@@ -1688,11 +1678,8 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* Add master windows to list */
for (i = 0; i < CA91C142_MAX_MASTER; i++) {
- master_image = kmalloc(sizeof(struct vme_master_resource),
- GFP_KERNEL);
- if (master_image == NULL) {
- dev_err(&pdev->dev, "Failed to allocate memory for "
- "master resource structure\n");
+ master_image = kmalloc(sizeof(*master_image), GFP_KERNEL);
+ if (!master_image) {
retval = -ENOMEM;
goto err_master;
}
@@ -1706,7 +1693,7 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
VME_SUPER | VME_USER | VME_PROG | VME_DATA;
master_image->width_attr = VME_D8 | VME_D16 | VME_D32 | VME_D64;
memset(&master_image->bus_resource, 0,
- sizeof(struct resource));
+ sizeof(master_image->bus_resource));
master_image->kern_base = NULL;
list_add_tail(&master_image->list,
&ca91cx42_bridge->master_resources);
@@ -1714,11 +1701,8 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* Add slave windows to list */
for (i = 0; i < CA91C142_MAX_SLAVE; i++) {
- slave_image = kmalloc(sizeof(struct vme_slave_resource),
- GFP_KERNEL);
- if (slave_image == NULL) {
- dev_err(&pdev->dev, "Failed to allocate memory for "
- "slave resource structure\n");
+ slave_image = kmalloc(sizeof(*slave_image), GFP_KERNEL);
+ if (!slave_image) {
retval = -ENOMEM;
goto err_slave;
}
@@ -1741,11 +1725,8 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* Add dma engines to list */
for (i = 0; i < CA91C142_MAX_DMA; i++) {
- dma_ctrlr = kmalloc(sizeof(struct vme_dma_resource),
- GFP_KERNEL);
- if (dma_ctrlr == NULL) {
- dev_err(&pdev->dev, "Failed to allocate memory for "
- "dma resource structure\n");
+ dma_ctrlr = kmalloc(sizeof(*dma_ctrlr), GFP_KERNEL);
+ if (!dma_ctrlr) {
retval = -ENOMEM;
goto err_dma;
}
@@ -1762,10 +1743,8 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
/* Add location monitor to list */
- lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL);
- if (lm == NULL) {
- dev_err(&pdev->dev, "Failed to allocate memory for "
- "location monitor resource structure\n");
+ lm = kmalloc(sizeof(*lm), GFP_KERNEL);
+ if (!lm) {
retval = -ENOMEM;
goto err_lm;
}