diff options
| -rw-r--r-- | drivers/vme/bridges/vme_ca91cx42.c | 73 | ||||
| -rw-r--r-- | drivers/vme/bridges/vme_fake.c | 35 | ||||
| -rw-r--r-- | drivers/vme/bridges/vme_tsi148.c | 83 | ||||
| -rw-r--r-- | drivers/vme/vme.c | 194 |
4 files changed, 157 insertions, 228 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; } diff --git a/drivers/vme/bridges/vme_fake.c b/drivers/vme/bridges/vme_fake.c index 30b3acc93833..7d83691047f4 100644 --- a/drivers/vme/bridges/vme_fake.c +++ b/drivers/vme/bridges/vme_fake.c @@ -409,7 +409,7 @@ static void fake_lm_check(struct fake_driver *bridge, unsigned long long addr, /* Each location monitor covers 8 bytes */ if (((lm_base + (8 * i)) <= addr) && ((lm_base + (8 * i) + 8) > addr)) { - if (bridge->lm_callback[i] != NULL) + if (bridge->lm_callback[i]) bridge->lm_callback[i]( bridge->lm_data[i]); } @@ -866,7 +866,7 @@ static int fake_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base, /* 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); pr_err("Location monitor callback attached, can't reset\n"); return -EBUSY; @@ -940,7 +940,7 @@ static int fake_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); pr_err("Existing callback attached\n"); return -EBUSY; @@ -978,7 +978,7 @@ static int fake_lm_detach(struct vme_lm_resource *lm, int monitor) /* If all location monitors disabled, disable global Location Monitor */ tmp = 0; for (i = 0; i < lm->monitors; i++) { - if (bridge->lm_callback[i] != NULL) + if (bridge->lm_callback[i]) tmp = 1; } @@ -1003,7 +1003,7 @@ static void *fake_alloc_consistent(struct device *parent, size_t size, { void *alloc = kmalloc(size, GFP_KERNEL); - if (alloc != NULL) + if (alloc) *dma = fake_ptr_to_pci(alloc); return alloc; @@ -1039,7 +1039,7 @@ static int fake_crcsr_init(struct vme_bridge *fake_bridge) /* Allocate mem for CR/CSR image */ bridge->crcsr_kernel = kzalloc(VME_CRCSR_BUF_SIZE, GFP_KERNEL); bridge->crcsr_bus = fake_ptr_to_pci(bridge->crcsr_kernel); - if (bridge->crcsr_kernel == NULL) + if (!bridge->crcsr_kernel) return -ENOMEM; vstat = fake_slot_get(fake_bridge); @@ -1075,14 +1075,14 @@ static int __init fake_init(void) /* If we want to support more than one bridge at some point, we need to * dynamically allocate this so we get one per device. */ - fake_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL); - if (fake_bridge == NULL) { + fake_bridge = kzalloc(sizeof(*fake_bridge), GFP_KERNEL); + if (!fake_bridge) { retval = -ENOMEM; goto err_struct; } - fake_device = kzalloc(sizeof(struct fake_driver), GFP_KERNEL); - if (fake_device == NULL) { + fake_device = kzalloc(sizeof(*fake_device), GFP_KERNEL); + if (!fake_device) { retval = -ENOMEM; goto err_driver; } @@ -1104,9 +1104,8 @@ static int __init fake_init(void) /* Add master windows to list */ INIT_LIST_HEAD(&fake_bridge->master_resources); for (i = 0; i < FAKE_MAX_MASTER; i++) { - master_image = kmalloc(sizeof(struct vme_master_resource), - GFP_KERNEL); - if (master_image == NULL) { + master_image = kmalloc(sizeof(*master_image), GFP_KERNEL); + if (!master_image) { retval = -ENOMEM; goto err_master; } @@ -1131,9 +1130,8 @@ static int __init fake_init(void) /* Add slave windows to list */ INIT_LIST_HEAD(&fake_bridge->slave_resources); for (i = 0; i < FAKE_MAX_SLAVE; i++) { - slave_image = kmalloc(sizeof(struct vme_slave_resource), - GFP_KERNEL); - if (slave_image == NULL) { + slave_image = kmalloc(sizeof(*slave_image), GFP_KERNEL); + if (!slave_image) { retval = -ENOMEM; goto err_slave; } @@ -1154,9 +1152,8 @@ static int __init fake_init(void) /* Add location monitor to list */ INIT_LIST_HEAD(&fake_bridge->lm_resources); - lm = kmalloc(sizeof(struct vme_lm_resource), GFP_KERNEL); - if (lm == NULL) { - pr_err("Failed to allocate memory for location monitor resource structure\n"); + lm = kmalloc(sizeof(*lm), GFP_KERNEL); + if (!lm) { retval = -ENOMEM; goto err_lm; } diff --git a/drivers/vme/bridges/vme_tsi148.c b/drivers/vme/bridges/vme_tsi148.c index fc1b634b969a..647d231d4422 100644 --- a/drivers/vme/bridges/vme_tsi148.c +++ b/drivers/vme/bridges/vme_tsi148.c @@ -741,18 +741,16 @@ static int tsi148_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)); } /* Exit here if size is zero */ if (size == 0) return 0; - 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(tsi148_bridge->parent, "Unable to allocate " - "memory for resource name\n"); + if (!image->bus_resource.name) { retval = -ENOMEM; goto err_name; } @@ -778,7 +776,7 @@ static int tsi148_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(tsi148_bridge->parent, "Failed to remap resource\n"); retval = -ENOMEM; goto err_remap; @@ -790,7 +788,7 @@ 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; } @@ -804,7 +802,7 @@ static void tsi148_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)); } /* @@ -1641,10 +1639,8 @@ static int tsi148_dma_list_add(struct vme_dma_list *list, tsi148_bridge = list->parent->parent; /* Descriptor must be aligned on 64-bit boundaries */ - entry = kmalloc(sizeof(struct tsi148_dma_entry), GFP_KERNEL); - if (entry == NULL) { - dev_err(tsi148_bridge->parent, "Failed to allocate memory for " - "dma resource structure\n"); + entry = kmalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) { retval = -ENOMEM; goto err_mem; } @@ -1661,7 +1657,7 @@ static int tsi148_dma_list_add(struct vme_dma_list *list, /* Given we are going to fill out the structure, we probably don't * need to zero it, but better safe than sorry for now. */ - memset(&entry->descriptor, 0, sizeof(struct tsi148_dma_descriptor)); + memset(&entry->descriptor, 0, sizeof(entry->descriptor)); /* Fill out source part */ switch (src->type) { @@ -1756,8 +1752,9 @@ static int tsi148_dma_list_add(struct vme_dma_list *list, list_add_tail(&entry->list, &list->entries); entry->dma_handle = dma_map_single(tsi148_bridge->parent, - &entry->descriptor, - sizeof(struct tsi148_dma_descriptor), DMA_TO_DEVICE); + &entry->descriptor, + sizeof(entry->descriptor), + DMA_TO_DEVICE); if (dma_mapping_error(tsi148_bridge->parent, entry->dma_handle)) { dev_err(tsi148_bridge->parent, "DMA mapping error\n"); retval = -EINVAL; @@ -1946,7 +1943,7 @@ static int tsi148_lm_set(struct vme_lm_resource *lm, unsigned long long lm_base, /* 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(tsi148_bridge->parent, "Location monitor " "callback attached, can't reset\n"); @@ -2071,7 +2068,7 @@ static int tsi148_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(tsi148_bridge->parent, "Existing callback attached\n"); return -EBUSY; @@ -2208,7 +2205,7 @@ static int tsi148_crcsr_init(struct vme_bridge *tsi148_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(tsi148_bridge->parent, "Failed to allocate memory for " "CR/CSR image\n"); return -ENOMEM; @@ -2294,19 +2291,15 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* If we want to support more than one of each bridge, we need to * dynamically generate this so we get one per device */ - tsi148_bridge = kzalloc(sizeof(struct vme_bridge), GFP_KERNEL); - if (tsi148_bridge == NULL) { - dev_err(&pdev->dev, "Failed to allocate memory for device " - "structure\n"); + tsi148_bridge = kzalloc(sizeof(*tsi148_bridge), GFP_KERNEL); + if (!tsi148_bridge) { retval = -ENOMEM; goto err_struct; } vme_init_bridge(tsi148_bridge); - tsi148_device = kzalloc(sizeof(struct tsi148_driver), GFP_KERNEL); - if (tsi148_device == NULL) { - dev_err(&pdev->dev, "Failed to allocate memory for device " - "structure\n"); + tsi148_device = kzalloc(sizeof(*tsi148_device), GFP_KERNEL); + if (!tsi148_device) { retval = -ENOMEM; goto err_driver; } @@ -2371,10 +2364,9 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) master_num--; tsi148_device->flush_image = - kmalloc(sizeof(struct vme_master_resource), GFP_KERNEL); - if (tsi148_device->flush_image == NULL) { - dev_err(&pdev->dev, "Failed to allocate memory for " - "flush resource structure\n"); + kmalloc(sizeof(*tsi148_device->flush_image), + GFP_KERNEL); + if (!tsi148_device->flush_image) { retval = -ENOMEM; goto err_master; } @@ -2383,17 +2375,14 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) tsi148_device->flush_image->locked = 1; tsi148_device->flush_image->number = master_num; memset(&tsi148_device->flush_image->bus_resource, 0, - sizeof(struct resource)); + sizeof(tsi148_device->flush_image->bus_resource)); tsi148_device->flush_image->kern_base = NULL; } /* Add master windows to list */ for (i = 0; i < master_num; 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; } @@ -2410,7 +2399,7 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) VME_PROG | VME_DATA; master_image->width_attr = VME_D16 | VME_D32; 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, &tsi148_bridge->master_resources); @@ -2418,11 +2407,8 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* Add slave windows to list */ for (i = 0; i < TSI148_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; } @@ -2442,11 +2428,8 @@ static int tsi148_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* Add dma engines to list */ for (i = 0; i < TSI148_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; } @@ -2465,10 +2448,8 @@ static int tsi148_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; } diff --git a/drivers/vme/vme.c b/drivers/vme/vme.c index 5b4c898d7509..d0ce50d56019 100644 --- a/drivers/vme/vme.c +++ b/drivers/vme/vme.c @@ -92,23 +92,23 @@ void *vme_alloc_consistent(struct vme_resource *resource, size_t size, { struct vme_bridge *bridge; - if (resource == NULL) { + if (!resource) { printk(KERN_ERR "No resource\n"); return NULL; } bridge = find_bridge(resource); - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find bridge\n"); return NULL; } - if (bridge->parent == NULL) { + if (!bridge->parent) { printk(KERN_ERR "Dev entry NULL for bridge %s\n", bridge->name); return NULL; } - if (bridge->alloc_consistent == NULL) { + if (!bridge->alloc_consistent) { printk(KERN_ERR "alloc_consistent not supported by bridge %s\n", bridge->name); return NULL; @@ -132,23 +132,23 @@ void vme_free_consistent(struct vme_resource *resource, size_t size, { struct vme_bridge *bridge; - if (resource == NULL) { + if (!resource) { printk(KERN_ERR "No resource\n"); return; } bridge = find_bridge(resource); - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find bridge\n"); return; } - if (bridge->parent == NULL) { + if (!bridge->parent) { printk(KERN_ERR "Dev entry NULL for bridge %s\n", bridge->name); return; } - if (bridge->free_consistent == NULL) { + if (!bridge->free_consistent) { printk(KERN_ERR "free_consistent not supported by bridge %s\n", bridge->name); return; @@ -301,7 +301,7 @@ struct vme_resource *vme_slave_request(struct vme_dev *vdev, u32 address, struct vme_resource *resource = NULL; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); goto err_bus; } @@ -311,7 +311,7 @@ struct vme_resource *vme_slave_request(struct vme_dev *vdev, u32 address, slave_image = list_entry(slave_pos, struct vme_slave_resource, list); - if (slave_image == NULL) { + if (!slave_image) { printk(KERN_ERR "Registered NULL Slave resource\n"); continue; } @@ -331,14 +331,13 @@ struct vme_resource *vme_slave_request(struct vme_dev *vdev, u32 address, } /* No free image */ - if (allocated_image == NULL) + if (!allocated_image) goto err_image; - resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL); - if (resource == NULL) { - printk(KERN_WARNING "Unable to allocate resource structure\n"); + resource = kmalloc(sizeof(*resource), GFP_KERNEL); + if (!resource) goto err_alloc; - } + resource->type = VME_SLAVE; resource->entry = &allocated_image->list; @@ -387,7 +386,7 @@ int vme_slave_set(struct vme_resource *resource, int enabled, image = list_entry(resource->entry, struct vme_slave_resource, list); - if (bridge->slave_set == NULL) { + if (!bridge->slave_set) { printk(KERN_ERR "Function not supported\n"); return -ENOSYS; } @@ -436,7 +435,7 @@ int vme_slave_get(struct vme_resource *resource, int *enabled, image = list_entry(resource->entry, struct vme_slave_resource, list); - if (bridge->slave_get == NULL) { + if (!bridge->slave_get) { printk(KERN_ERR "vme_slave_get not supported\n"); return -EINVAL; } @@ -463,7 +462,7 @@ void vme_slave_free(struct vme_resource *resource) slave_image = list_entry(resource->entry, struct vme_slave_resource, list); - if (slave_image == NULL) { + if (!slave_image) { printk(KERN_ERR "Can't find slave resource\n"); return; } @@ -503,7 +502,7 @@ struct vme_resource *vme_master_request(struct vme_dev *vdev, u32 address, struct vme_resource *resource = NULL; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); goto err_bus; } @@ -513,7 +512,7 @@ struct vme_resource *vme_master_request(struct vme_dev *vdev, u32 address, master_image = list_entry(master_pos, struct vme_master_resource, list); - if (master_image == NULL) { + if (!master_image) { printk(KERN_WARNING "Registered NULL master resource\n"); continue; } @@ -534,16 +533,15 @@ struct vme_resource *vme_master_request(struct vme_dev *vdev, u32 address, } /* Check to see if we found a resource */ - if (allocated_image == NULL) { + if (!allocated_image) { printk(KERN_ERR "Can't find a suitable resource\n"); goto err_image; } - resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL); - if (resource == NULL) { - printk(KERN_ERR "Unable to allocate resource structure\n"); + resource = kmalloc(sizeof(*resource), GFP_KERNEL); + if (!resource) goto err_alloc; - } + resource->type = VME_MASTER; resource->entry = &allocated_image->list; @@ -592,7 +590,7 @@ int vme_master_set(struct vme_resource *resource, int enabled, image = list_entry(resource->entry, struct vme_master_resource, list); - if (bridge->master_set == NULL) { + if (!bridge->master_set) { printk(KERN_WARNING "vme_master_set not supported\n"); return -EINVAL; } @@ -642,7 +640,7 @@ int vme_master_get(struct vme_resource *resource, int *enabled, image = list_entry(resource->entry, struct vme_master_resource, list); - if (bridge->master_get == NULL) { + if (!bridge->master_get) { printk(KERN_WARNING "%s not supported\n", __func__); return -EINVAL; } @@ -674,7 +672,7 @@ ssize_t vme_master_read(struct vme_resource *resource, void *buf, size_t count, struct vme_master_resource *image; size_t length; - if (bridge->master_read == NULL) { + if (!bridge->master_read) { printk(KERN_WARNING "Reading from resource not supported\n"); return -EINVAL; } @@ -723,7 +721,7 @@ ssize_t vme_master_write(struct vme_resource *resource, void *buf, struct vme_master_resource *image; size_t length; - if (bridge->master_write == NULL) { + if (!bridge->master_write) { printk(KERN_WARNING "Writing to resource not supported\n"); return -EINVAL; } @@ -774,7 +772,7 @@ unsigned int vme_master_rmw(struct vme_resource *resource, unsigned int mask, struct vme_bridge *bridge = find_bridge(resource); struct vme_master_resource *image; - if (bridge->master_rmw == NULL) { + if (!bridge->master_rmw) { printk(KERN_WARNING "Writing to resource not supported\n"); return -EINVAL; } @@ -844,7 +842,7 @@ void vme_master_free(struct vme_resource *resource) master_image = list_entry(resource->entry, struct vme_master_resource, list); - if (master_image == NULL) { + if (!master_image) { printk(KERN_ERR "Can't find master resource\n"); return; } @@ -884,7 +882,7 @@ struct vme_resource *vme_dma_request(struct vme_dev *vdev, u32 route) printk(KERN_ERR "No VME resource Attribute tests done\n"); bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); goto err_bus; } @@ -893,8 +891,7 @@ struct vme_resource *vme_dma_request(struct vme_dev *vdev, u32 route) list_for_each(dma_pos, &bridge->dma_resources) { dma_ctrlr = list_entry(dma_pos, struct vme_dma_resource, list); - - if (dma_ctrlr == NULL) { + if (!dma_ctrlr) { printk(KERN_ERR "Registered NULL DMA resource\n"); continue; } @@ -913,14 +910,13 @@ struct vme_resource *vme_dma_request(struct vme_dev *vdev, u32 route) } /* Check to see if we found a resource */ - if (allocated_ctrlr == NULL) + if (!allocated_ctrlr) goto err_ctrlr; - resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL); - if (resource == NULL) { - printk(KERN_WARNING "Unable to allocate resource structure\n"); + resource = kmalloc(sizeof(*resource), GFP_KERNEL); + if (!resource) goto err_alloc; - } + resource->type = VME_DMA; resource->entry = &allocated_ctrlr->list; @@ -949,7 +945,6 @@ EXPORT_SYMBOL(vme_dma_request); */ struct vme_dma_list *vme_new_dma_list(struct vme_resource *resource) { - struct vme_dma_resource *ctrlr; struct vme_dma_list *dma_list; if (resource->type != VME_DMA) { @@ -957,15 +952,14 @@ struct vme_dma_list *vme_new_dma_list(struct vme_resource *resource) return NULL; } - ctrlr = list_entry(resource->entry, struct vme_dma_resource, list); - - dma_list = kmalloc(sizeof(struct vme_dma_list), GFP_KERNEL); - if (dma_list == NULL) { - printk(KERN_ERR "Unable to allocate memory for new DMA list\n"); + dma_list = kmalloc(sizeof(*dma_list), GFP_KERNEL); + if (!dma_list) return NULL; - } + INIT_LIST_HEAD(&dma_list->entries); - dma_list->parent = ctrlr; + dma_list->parent = list_entry(resource->entry, + struct vme_dma_resource, + list); mutex_init(&dma_list->mtx); return dma_list; @@ -988,17 +982,13 @@ struct vme_dma_attr *vme_dma_pattern_attribute(u32 pattern, u32 type) struct vme_dma_attr *attributes; struct vme_dma_pattern *pattern_attr; - attributes = kmalloc(sizeof(struct vme_dma_attr), GFP_KERNEL); - if (attributes == NULL) { - printk(KERN_ERR "Unable to allocate memory for attributes structure\n"); + attributes = kmalloc(sizeof(*attributes), GFP_KERNEL); + if (!attributes) goto err_attr; - } - pattern_attr = kmalloc(sizeof(struct vme_dma_pattern), GFP_KERNEL); - if (pattern_attr == NULL) { - printk(KERN_ERR "Unable to allocate memory for pattern attributes\n"); + pattern_attr = kmalloc(sizeof(*pattern_attr), GFP_KERNEL); + if (!pattern_attr) goto err_pat; - } attributes->type = VME_DMA_PATTERN; attributes->private = (void *)pattern_attr; @@ -1032,19 +1022,13 @@ struct vme_dma_attr *vme_dma_pci_attribute(dma_addr_t address) /* XXX Run some sanity checks here */ - attributes = kmalloc(sizeof(struct vme_dma_attr), GFP_KERNEL); - if (attributes == NULL) { - printk(KERN_ERR "Unable to allocate memory for attributes structure\n"); + attributes = kmalloc(sizeof(*attributes), GFP_KERNEL); + if (!attributes) goto err_attr; - } - pci_attr = kmalloc(sizeof(struct vme_dma_pci), GFP_KERNEL); - if (pci_attr == NULL) { - printk(KERN_ERR "Unable to allocate memory for PCI attributes\n"); + pci_attr = kmalloc(sizeof(*pci_attr), GFP_KERNEL); + if (!pci_attr) goto err_pci; - } - - attributes->type = VME_DMA_PCI; attributes->private = (void *)pci_attr; @@ -1079,18 +1063,13 @@ struct vme_dma_attr *vme_dma_vme_attribute(unsigned long long address, struct vme_dma_attr *attributes; struct vme_dma_vme *vme_attr; - attributes = kmalloc( - sizeof(struct vme_dma_attr), GFP_KERNEL); - if (attributes == NULL) { - printk(KERN_ERR "Unable to allocate memory for attributes structure\n"); + attributes = kmalloc(sizeof(*attributes), GFP_KERNEL); + if (!attributes) goto err_attr; - } - vme_attr = kmalloc(sizeof(struct vme_dma_vme), GFP_KERNEL); - if (vme_attr == NULL) { - printk(KERN_ERR "Unable to allocate memory for VME attributes\n"); + vme_attr = kmalloc(sizeof(*vme_attr), GFP_KERNEL); + if (!vme_attr) goto err_vme; - } attributes->type = VME_DMA_VME; attributes->private = (void *)vme_attr; @@ -1146,7 +1125,7 @@ int vme_dma_list_add(struct vme_dma_list *list, struct vme_dma_attr *src, struct vme_bridge *bridge = list->parent->parent; int retval; - if (bridge->dma_list_add == NULL) { + if (!bridge->dma_list_add) { printk(KERN_WARNING "Link List DMA generation not supported\n"); return -EINVAL; } @@ -1179,7 +1158,7 @@ int vme_dma_list_exec(struct vme_dma_list *list) struct vme_bridge *bridge = list->parent->parent; int retval; - if (bridge->dma_list_exec == NULL) { + if (!bridge->dma_list_exec) { printk(KERN_ERR "Link List DMA execution not supported\n"); return -EINVAL; } @@ -1208,7 +1187,7 @@ int vme_dma_list_free(struct vme_dma_list *list) struct vme_bridge *bridge = list->parent->parent; int retval; - if (bridge->dma_list_empty == NULL) { + if (!bridge->dma_list_empty) { printk(KERN_WARNING "Emptying of Link Lists not supported\n"); return -EINVAL; } @@ -1340,8 +1319,7 @@ void vme_irq_handler(struct vme_bridge *bridge, int level, int statid) call = bridge->irq[level - 1].callback[statid].func; priv_data = bridge->irq[level - 1].callback[statid].priv_data; - - if (call != NULL) + if (call) call(level, statid, priv_data); else printk(KERN_WARNING "Spurious VME interrupt, level:%x, vector:%x\n", @@ -1372,7 +1350,7 @@ int vme_irq_request(struct vme_dev *vdev, int level, int statid, struct vme_bridge *bridge; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); return -EINVAL; } @@ -1382,7 +1360,7 @@ int vme_irq_request(struct vme_dev *vdev, int level, int statid, return -EINVAL; } - if (bridge->irq_set == NULL) { + if (!bridge->irq_set) { printk(KERN_ERR "Configuring interrupts not supported\n"); return -EINVAL; } @@ -1421,7 +1399,7 @@ void vme_irq_free(struct vme_dev *vdev, int level, int statid) struct vme_bridge *bridge; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); return; } @@ -1431,7 +1409,7 @@ void vme_irq_free(struct vme_dev *vdev, int level, int statid) return; } - if (bridge->irq_set == NULL) { + if (!bridge->irq_set) { printk(KERN_ERR "Configuring interrupts not supported\n"); return; } @@ -1468,7 +1446,7 @@ int vme_irq_generate(struct vme_dev *vdev, int level, int statid) struct vme_bridge *bridge; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); return -EINVAL; } @@ -1478,7 +1456,7 @@ int vme_irq_generate(struct vme_dev *vdev, int level, int statid) return -EINVAL; } - if (bridge->irq_generate == NULL) { + if (!bridge->irq_generate) { printk(KERN_WARNING "Interrupt generation not supported\n"); return -EINVAL; } @@ -1506,7 +1484,7 @@ struct vme_resource *vme_lm_request(struct vme_dev *vdev) struct vme_resource *resource = NULL; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); goto err_bus; } @@ -1515,8 +1493,7 @@ struct vme_resource *vme_lm_request(struct vme_dev *vdev) list_for_each(lm_pos, &bridge->lm_resources) { lm = list_entry(lm_pos, struct vme_lm_resource, list); - - if (lm == NULL) { + if (!lm) { printk(KERN_ERR "Registered NULL Location Monitor resource\n"); continue; } @@ -1533,14 +1510,13 @@ struct vme_resource *vme_lm_request(struct vme_dev *vdev) } /* Check to see if we found a resource */ - if (allocated_lm == NULL) + if (!allocated_lm) goto err_lm; - resource = kmalloc(sizeof(struct vme_resource), GFP_KERNEL); - if (resource == NULL) { - printk(KERN_ERR "Unable to allocate resource structure\n"); + resource = kmalloc(sizeof(*resource), GFP_KERNEL); + if (!resource) goto err_alloc; - } + resource->type = VME_LM; resource->entry = &allocated_lm->list; @@ -1610,7 +1586,7 @@ int vme_lm_set(struct vme_resource *resource, unsigned long long lm_base, lm = list_entry(resource->entry, struct vme_lm_resource, list); - if (bridge->lm_set == NULL) { + if (!bridge->lm_set) { printk(KERN_ERR "vme_lm_set not supported\n"); return -EINVAL; } @@ -1646,7 +1622,7 @@ int vme_lm_get(struct vme_resource *resource, unsigned long long *lm_base, lm = list_entry(resource->entry, struct vme_lm_resource, list); - if (bridge->lm_get == NULL) { + if (!bridge->lm_get) { printk(KERN_ERR "vme_lm_get not supported\n"); return -EINVAL; } @@ -1683,7 +1659,7 @@ int vme_lm_attach(struct vme_resource *resource, int monitor, lm = list_entry(resource->entry, struct vme_lm_resource, list); - if (bridge->lm_attach == NULL) { + if (!bridge->lm_attach) { printk(KERN_ERR "vme_lm_attach not supported\n"); return -EINVAL; } @@ -1716,7 +1692,7 @@ int vme_lm_detach(struct vme_resource *resource, int monitor) lm = list_entry(resource->entry, struct vme_lm_resource, list); - if (bridge->lm_detach == NULL) { + if (!bridge->lm_detach) { printk(KERN_ERR "vme_lm_detach not supported\n"); return -EINVAL; } @@ -1778,12 +1754,12 @@ int vme_slot_num(struct vme_dev *vdev) struct vme_bridge *bridge; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { printk(KERN_ERR "Can't find VME bus\n"); return -EINVAL; } - if (bridge->slot_get == NULL) { + if (!bridge->slot_get) { printk(KERN_WARNING "vme_slot_num not supported\n"); return -EINVAL; } @@ -1806,7 +1782,7 @@ int vme_bus_num(struct vme_dev *vdev) struct vme_bridge *bridge; bridge = vdev->bridge; - if (bridge == NULL) { + if (!bridge) { pr_err("Can't find VME bus\n"); return -EINVAL; } @@ -1886,7 +1862,7 @@ static int __vme_register_driver_bus(struct vme_driver *drv, struct vme_dev *tmp; for (i = 0; i < ndevs; i++) { - vdev = kzalloc(sizeof(struct vme_dev), GFP_KERNEL); + vdev = kzalloc(sizeof(*vdev), GFP_KERNEL); if (!vdev) { err = -ENOMEM; goto err_devalloc; @@ -2018,30 +1994,26 @@ static int vme_bus_match(struct device *dev, struct device_driver *drv) static int vme_bus_probe(struct device *dev) { - int retval = -ENODEV; struct vme_driver *driver; struct vme_dev *vdev = dev_to_vme_dev(dev); driver = dev->platform_data; + if (driver->probe) + return driver->probe(vdev); - if (driver->probe != NULL) - retval = driver->probe(vdev); - - return retval; + return -ENODEV; } static int vme_bus_remove(struct device *dev) { - int retval = -ENODEV; struct vme_driver *driver; struct vme_dev *vdev = dev_to_vme_dev(dev); driver = dev->platform_data; + if (driver->remove) + return driver->remove(vdev); - if (driver->remove != NULL) - retval = driver->remove(vdev); - - return retval; + return -ENODEV; } struct bus_type vme_bus_type = { |