Merge tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc updates from Greg KH:
 "Here is the big set of char/misc and other driver subsystem patches
  for 4.15-rc1.

  There are small changes all over here, hyperv driver updates, pcmcia
  driver updates, w1 driver updats, vme driver updates, nvmem driver
  updates, and lots of other little one-off driver updates as well. The
  shortlog has the full details.

  All of these have been in linux-next for quite a while with no
  reported issues"

* tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (90 commits)
  VME: Return -EBUSY when DMA list in use
  w1: keep balance of mutex locks and refcnts
  MAINTAINERS: Update VME subsystem tree.
  nvmem: sunxi-sid: add support for A64/H5's SID controller
  nvmem: imx-ocotp: Update module description
  nvmem: imx-ocotp: Enable i.MX7D OTP write support
  nvmem: imx-ocotp: Add i.MX7D timing write clock setup support
  nvmem: imx-ocotp: Move i.MX6 write clock setup to dedicated function
  nvmem: imx-ocotp: Add support for banked OTP addressing
  nvmem: imx-ocotp: Pass parameters via a struct
  nvmem: imx-ocotp: Restrict OTP write to IMX6 processors
  nvmem: uniphier: add UniPhier eFuse driver
  dt-bindings: nvmem: add description for UniPhier eFuse
  nvmem: set nvmem->owner to nvmem->dev->driver->owner if unset
  nvmem: qfprom: fix different address space warnings of sparse
  nvmem: mtk-efuse: fix different address space warnings of sparse
  nvmem: mtk-efuse: use stack for nvmem_config instead of malloc'ing it
  nvmem: imx-iim: use stack for nvmem_config instead of malloc'ing it
  thunderbolt: tb: fix use after free in tb_activate_pcie_devices
  MAINTAINERS: Add git tree for Thunderbolt development
  ...

4 files changed, 166 insertions, 239 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 6a3ead42aba8..81246221a13b 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;
@@ -208,29 +208,27 @@ int vme_check_window(u32 aspace, unsigned long long vme_base,
 {
         int retval = 0;
 
+        if (vme_base + size < size)
+                return -EINVAL;
+
         switch (aspace) {
         case VME_A16:
-                if (((vme_base + size) > VME_A16_MAX) ||
-                                (vme_base > VME_A16_MAX))
+                if (vme_base + size > VME_A16_MAX)
                         retval = -EFAULT;
                 break;
         case VME_A24:
-                if (((vme_base + size) > VME_A24_MAX) ||
-                                (vme_base > VME_A24_MAX))
+                if (vme_base + size > VME_A24_MAX)
                         retval = -EFAULT;
                 break;
         case VME_A32:
-                if (((vme_base + size) > VME_A32_MAX) ||
-                                (vme_base > VME_A32_MAX))
+                if (vme_base + size > VME_A32_MAX)
                         retval = -EFAULT;
                 break;
         case VME_A64:
-                if ((size != 0) && (vme_base > U64_MAX + 1 - size))
-                        retval = -EFAULT;
+                /* The VME_A64_MAX limit is actually U64_MAX + 1 */
                 break;
         case VME_CRCSR:
-                if (((vme_base + size) > VME_CRCSR_MAX) ||
-                                (vme_base > VME_CRCSR_MAX))
+                if (vme_base + size > VME_CRCSR_MAX)
                         retval = -EFAULT;
                 break;
         case VME_USER1:
@@ -303,7 +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;
         }
@@ -313,7 +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;
                 }
@@ -333,14 +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;
 
@@ -389,7 +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;
         }
@@ -438,7 +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;
         }
@@ -465,7 +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;
         }
@@ -505,7 +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;
         }
@@ -515,7 +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;
                 }
@@ -536,16 +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;
 
@@ -594,7 +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;
         }
@@ -644,7 +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;
         }
@@ -676,7 +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;
         }
@@ -725,7 +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;
         }
@@ -776,7 +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;
         }
@@ -846,7 +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;
         }
@@ -886,7 +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;
         }
@@ -895,8 +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;
                 }
@@ -915,14 +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;
 
@@ -951,7 +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) {
@@ -959,15 +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;
@@ -990,17 +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;
@@ -1034,19 +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;
@@ -1081,18 +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;
@@ -1148,7 +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;
         }
@@ -1181,7 +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;
         }
@@ -1210,14 +1187,14 @@ 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;
         }
 
         if (!mutex_trylock(&list->mtx)) {
                 printk(KERN_ERR "Link List in use\n");
-                return -EINVAL;
+                return -EBUSY;
         }
 
         /*
@@ -1342,8 +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",
@@ -1374,7 +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;
         }
@@ -1384,7 +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;
         }
@@ -1423,7 +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;
         }
@@ -1433,7 +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;
         }
@@ -1470,7 +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;
         }
@@ -1480,7 +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;
         }
@@ -1508,7 +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;
         }
@@ -1517,8 +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;
                 }
@@ -1535,14 +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;
 
@@ -1612,7 +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;
         }
@@ -1648,7 +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;
         }
@@ -1685,7 +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;
         }
@@ -1718,7 +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;
         }
@@ -1780,12 +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;
         }
@@ -1808,7 +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;
         }
@@ -1888,7 +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;
@@ -2020,30 +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 = {