[PATCH 08/14] vme: fake: Adjust 11 checks for null pointers

SF Markus Elfring
2017-08-25T16:05:21Z

Date: Fri, 25 Aug 2017 10:01:16 +0200
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The script “checkpatch.pl” pointed information out like the following.

Comparison to NULL could be written …

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/vme/bridges/vme_fake.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/drivers/vme/bridges/vme_fake.c b/drivers/vme/bridges/vme_fake.c
index 39f84df44557..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);
@@ -1076,13 +1076,13 @@ static int __init fake_init(void)
* dynamically allocate this so we get one per device.
*/
fake_bridge = kzalloc(sizeof(*fake_bridge), GFP_KERNEL);
- if (fake_bridge = NULL) {
+ if (!fake_bridge) {
retval = -ENOMEM;
goto err_struct;
}

fake_device = kzalloc(sizeof(*fake_device), GFP_KERNEL);
- if (fake_device = NULL) {
+ if (!fake_device) {
retval = -ENOMEM;
goto err_driver;
}
@@ -1105,7 +1105,7 @@ static int __init fake_init(void)
INIT_LIST_HEAD(&fake_bridge->master_resources);
for (i = 0; i < FAKE_MAX_MASTER; i++) {
master_image = kmalloc(sizeof(*master_image), GFP_KERNEL);
- if (master_image = NULL) {
+ if (!master_image) {
retval = -ENOMEM;
goto err_master;
}
@@ -1131,7 +1131,7 @@ static int __init fake_init(void)
INIT_LIST_HEAD(&fake_bridge->slave_resources);
for (i = 0; i < FAKE_MAX_SLAVE; i++) {
slave_image = kmalloc(sizeof(*slave_image), GFP_KERNEL);
- if (slave_image = NULL) {
+ if (!slave_image) {
retval = -ENOMEM;
goto err_slave;
}
@@ -1153,7 +1153,7 @@ static int __init fake_init(void)
/* Add location monitor to list */
INIT_LIST_HEAD(&fake_bridge->lm_resources);
lm = kmalloc(sizeof(*lm), GFP_KERNEL);
- if (lm = NULL) {
+ if (!lm) {
retval = -ENOMEM;
goto err_lm;
}
--
2.14.0