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authorMathieu Malaterre <malat@debian.org>2018-04-13 20:41:43 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2018-05-25 04:04:38 +0200
commitd8731527acee53b4d46d59ff0b5fc36931ad0451 (patch)
tree7730b8b970de0401fd0b9ac2ad64b73c605d155a
parentpowerpc/altivec: Add missing prototypes for altivec (diff)
downloadlinux-d8731527acee53b4d46d59ff0b5fc36931ad0451.tar.xz
linux-d8731527acee53b4d46d59ff0b5fc36931ad0451.zip
powerpc/sparse: Fix plain integer as NULL pointer warning
Trivial fix to remove the following sparse warnings: arch/powerpc/kernel/module_32.c:112:74: warning: Using plain integer as NULL pointer arch/powerpc/kernel/module_32.c:117:74: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:1155:28: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:1230:20: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:1385:36: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:1752:23: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:2084:19: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:2110:32: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:2167:19: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:2183:19: warning: Using plain integer as NULL pointer drivers/macintosh/via-pmu.c:277:20: warning: Using plain integer as NULL pointer arch/powerpc/platforms/powermac/setup.c:155:67: warning: Using plain integer as NULL pointer arch/powerpc/platforms/powermac/setup.c:247:27: warning: Using plain integer as NULL pointer arch/powerpc/platforms/powermac/setup.c:249:27: warning: Using plain integer as NULL pointer arch/powerpc/platforms/powermac/setup.c:252:37: warning: Using plain integer as NULL pointer arch/powerpc/mm/tlb_hash32.c:127:21: warning: Using plain integer as NULL pointer arch/powerpc/mm/tlb_hash32.c:148:21: warning: Using plain integer as NULL pointer arch/powerpc/mm/tlb_hash32.c:44:21: warning: Using plain integer as NULL pointer arch/powerpc/mm/tlb_hash32.c:57:21: warning: Using plain integer as NULL pointer arch/powerpc/mm/tlb_hash32.c:87:21: warning: Using plain integer as NULL pointer arch/powerpc/kernel/btext.c:160:31: warning: Using plain integer as NULL pointer arch/powerpc/kernel/btext.c:167:22: warning: Using plain integer as NULL pointer arch/powerpc/kernel/btext.c:274:21: warning: Using plain integer as NULL pointer arch/powerpc/kernel/btext.c:285:31: warning: Using plain integer as NULL pointer arch/powerpc/include/asm/hugetlb.h:204:16: warning: Using plain integer as NULL pointer arch/powerpc/mm/ppc_mmu_32.c:170:21: warning: Using plain integer as NULL pointer arch/powerpc/platforms/powermac/pci.c:1227:23: warning: Using plain integer as NULL pointer arch/powerpc/platforms/powermac/pci.c:65:24: warning: Using plain integer as NULL pointer Also use `--fix` command line option from `script/checkpatch --strict` to remove the following: CHECK: Comparison to NULL could be written "!dispDeviceBase" #72: FILE: arch/powerpc/kernel/btext.c:160: + if (dispDeviceBase == NULL) CHECK: Comparison to NULL could be written "!vbase" #80: FILE: arch/powerpc/kernel/btext.c:167: + if (vbase == NULL) CHECK: Comparison to NULL could be written "!base" #89: FILE: arch/powerpc/kernel/btext.c:274: + if (base == NULL) CHECK: Comparison to NULL could be written "!dispDeviceBase" #98: FILE: arch/powerpc/kernel/btext.c:285: + if (dispDeviceBase == NULL) CHECK: Comparison to NULL could be written "strstr" #117: FILE: arch/powerpc/kernel/module_32.c:117: + if (strstr(secstrings + sechdrs[i].sh_name, ".debug") != NULL) CHECK: Comparison to NULL could be written "!Hash" #130: FILE: arch/powerpc/mm/ppc_mmu_32.c:170: + if (Hash == NULL) CHECK: Comparison to NULL could be written "Hash" #143: FILE: arch/powerpc/mm/tlb_hash32.c:44: + if (Hash != NULL) { CHECK: Comparison to NULL could be written "!Hash" #152: FILE: arch/powerpc/mm/tlb_hash32.c:57: + if (Hash == NULL) { CHECK: Comparison to NULL could be written "!Hash" #161: FILE: arch/powerpc/mm/tlb_hash32.c:87: + if (Hash == NULL) { CHECK: Comparison to NULL could be written "!Hash" #170: FILE: arch/powerpc/mm/tlb_hash32.c:127: + if (Hash == NULL) { CHECK: Comparison to NULL could be written "!Hash" #179: FILE: arch/powerpc/mm/tlb_hash32.c:148: + if (Hash == NULL) { ERROR: space required after that ';' (ctx:VxV) #192: FILE: arch/powerpc/platforms/powermac/pci.c:65: + for (; node != NULL;node = node->sibling) { CHECK: Comparison to NULL could be written "node" #192: FILE: arch/powerpc/platforms/powermac/pci.c:65: + for (; node != NULL;node = node->sibling) { CHECK: Comparison to NULL could be written "!region" #201: FILE: arch/powerpc/platforms/powermac/pci.c:1227: + if (region == NULL) CHECK: Comparison to NULL could be written "of_get_property" #214: FILE: arch/powerpc/platforms/powermac/setup.c:155: + if (of_get_property(np, "cache-unified", NULL) != NULL && dc) { CHECK: Comparison to NULL could be written "!np" #223: FILE: arch/powerpc/platforms/powermac/setup.c:247: + if (np == NULL) CHECK: Comparison to NULL could be written "np" #226: FILE: arch/powerpc/platforms/powermac/setup.c:249: + if (np != NULL) { CHECK: Comparison to NULL could be written "l2cr" #230: FILE: arch/powerpc/platforms/powermac/setup.c:252: + if (l2cr != NULL) { CHECK: Comparison to NULL could be written "via" #243: FILE: drivers/macintosh/via-pmu.c:277: + if (via != NULL) CHECK: Comparison to NULL could be written "current_req" #252: FILE: drivers/macintosh/via-pmu.c:1155: + if (current_req != NULL) { CHECK: Comparison to NULL could be written "!req" #261: FILE: drivers/macintosh/via-pmu.c:1230: + if (req == NULL || pmu_state != idle CHECK: Comparison to NULL could be written "!req" #270: FILE: drivers/macintosh/via-pmu.c:1385: + if (req == NULL) { CHECK: Comparison to NULL could be written "!pp" #288: FILE: drivers/macintosh/via-pmu.c:2084: + if (pp == NULL) CHECK: Comparison to NULL could be written "!pp" #297: FILE: drivers/macintosh/via-pmu.c:2110: + if (count < 1 || pp == NULL) CHECK: Comparison to NULL could be written "!pp" #306: FILE: drivers/macintosh/via-pmu.c:2167: + if (pp == NULL) CHECK: Comparison to NULL could be written "pp" #315: FILE: drivers/macintosh/via-pmu.c:2183: + if (pp != NULL) { Link: https://github.com/linuxppc/linux/issues/37 Signed-off-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-rw-r--r--arch/powerpc/include/asm/hugetlb.h2
-rw-r--r--arch/powerpc/kernel/btext.c8
-rw-r--r--arch/powerpc/kernel/module_32.c4
-rw-r--r--arch/powerpc/mm/ppc_mmu_32.c2
-rw-r--r--arch/powerpc/mm/tlb_hash32.c10
-rw-r--r--arch/powerpc/platforms/powermac/pci.c4
-rw-r--r--arch/powerpc/platforms/powermac/setup.c8
-rw-r--r--drivers/macintosh/via-pmu.c18
8 files changed, 28 insertions, 28 deletions
diff --git a/arch/powerpc/include/asm/hugetlb.h b/arch/powerpc/include/asm/hugetlb.h
index 78540c074d70..96444bc08034 100644
--- a/arch/powerpc/include/asm/hugetlb.h
+++ b/arch/powerpc/include/asm/hugetlb.h
@@ -202,7 +202,7 @@ static inline void flush_hugetlb_page(struct vm_area_struct *vma,
static inline pte_t *hugepte_offset(hugepd_t hpd, unsigned long addr,
unsigned pdshift)
{
- return 0;
+ return NULL;
}
#endif /* CONFIG_HUGETLB_PAGE */
diff --git a/arch/powerpc/kernel/btext.c b/arch/powerpc/kernel/btext.c
index 6537cba1a758..54403144623f 100644
--- a/arch/powerpc/kernel/btext.c
+++ b/arch/powerpc/kernel/btext.c
@@ -157,14 +157,14 @@ void btext_map(void)
/* By default, we are no longer mapped */
boot_text_mapped = 0;
- if (dispDeviceBase == 0)
+ if (!dispDeviceBase)
return;
base = ((unsigned long) dispDeviceBase) & 0xFFFFF000UL;
offset = ((unsigned long) dispDeviceBase) - base;
size = dispDeviceRowBytes * dispDeviceRect[3] + offset
+ dispDeviceRect[0];
vbase = __ioremap(base, size, pgprot_val(pgprot_noncached_wc(__pgprot(0))));
- if (vbase == 0)
+ if (!vbase)
return;
logicalDisplayBase = vbase + offset;
boot_text_mapped = 1;
@@ -270,7 +270,7 @@ static unsigned char * calc_base(int x, int y)
unsigned char *base;
base = logicalDisplayBase;
- if (base == 0)
+ if (!base)
base = dispDeviceBase;
base += (x + dispDeviceRect[0]) * (dispDeviceDepth >> 3);
base += (y + dispDeviceRect[1]) * dispDeviceRowBytes;
@@ -281,7 +281,7 @@ static unsigned char * calc_base(int x, int y)
void btext_update_display(unsigned long phys, int width, int height,
int depth, int pitch)
{
- if (dispDeviceBase == 0)
+ if (!dispDeviceBase)
return;
/* check it's the same frame buffer (within 256MB) */
diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c
index 5a7a78f12562..88d83771f462 100644
--- a/arch/powerpc/kernel/module_32.c
+++ b/arch/powerpc/kernel/module_32.c
@@ -109,12 +109,12 @@ static unsigned long get_plt_size(const Elf32_Ehdr *hdr,
for (i = 1; i < hdr->e_shnum; i++) {
/* If it's called *.init*, and we're not init, we're
not interested */
- if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != 0)
+ if ((strstr(secstrings + sechdrs[i].sh_name, ".init") != NULL)
!= is_init)
continue;
/* We don't want to look at debug sections. */
- if (strstr(secstrings + sechdrs[i].sh_name, ".debug") != 0)
+ if (strstr(secstrings + sechdrs[i].sh_name, ".debug"))
continue;
if (sechdrs[i].sh_type == SHT_RELA) {
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index 2a049fb8523d..bea6c544e38f 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -167,7 +167,7 @@ void hash_preload(struct mm_struct *mm, unsigned long ea,
{
pmd_t *pmd;
- if (Hash == 0)
+ if (!Hash)
return;
pmd = pmd_offset(pud_offset(pgd_offset(mm, ea), ea), ea);
if (!pmd_none(*pmd))
diff --git a/arch/powerpc/mm/tlb_hash32.c b/arch/powerpc/mm/tlb_hash32.c
index 702d7689d714..cf8472cf3d59 100644
--- a/arch/powerpc/mm/tlb_hash32.c
+++ b/arch/powerpc/mm/tlb_hash32.c
@@ -41,7 +41,7 @@ void flush_hash_entry(struct mm_struct *mm, pte_t *ptep, unsigned long addr)
{
unsigned long ptephys;
- if (Hash != 0) {
+ if (Hash) {
ptephys = __pa(ptep) & PAGE_MASK;
flush_hash_pages(mm->context.id, addr, ptephys, 1);
}
@@ -54,7 +54,7 @@ EXPORT_SYMBOL(flush_hash_entry);
*/
void tlb_flush(struct mmu_gather *tlb)
{
- if (Hash == 0) {
+ if (!Hash) {
/*
* 603 needs to flush the whole TLB here since
* it doesn't use a hash table.
@@ -84,7 +84,7 @@ static void flush_range(struct mm_struct *mm, unsigned long start,
int count;
unsigned int ctx = mm->context.id;
- if (Hash == 0) {
+ if (!Hash) {
_tlbia();
return;
}
@@ -124,7 +124,7 @@ void flush_tlb_mm(struct mm_struct *mm)
{
struct vm_area_struct *mp;
- if (Hash == 0) {
+ if (!Hash) {
_tlbia();
return;
}
@@ -145,7 +145,7 @@ void flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr)
struct mm_struct *mm;
pmd_t *pmd;
- if (Hash == 0) {
+ if (!Hash) {
_tlbie(vmaddr);
return;
}
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 0b8174a79993..df762bb3c735 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -62,7 +62,7 @@ struct device_node *k2_skiplist[2];
static int __init fixup_one_level_bus_range(struct device_node *node, int higher)
{
- for (; node != 0;node = node->sibling) {
+ for (; node; node = node->sibling) {
const int * bus_range;
const unsigned int *class_code;
int len;
@@ -1219,7 +1219,7 @@ static void fixup_u4_pcie(struct pci_dev* dev)
region = r;
}
/* Nothing found, bail */
- if (region == 0)
+ if (!region)
return;
/* Print things out */
diff --git a/arch/powerpc/platforms/powermac/setup.c b/arch/powerpc/platforms/powermac/setup.c
index ab668cb72263..f40e87ca180b 100644
--- a/arch/powerpc/platforms/powermac/setup.c
+++ b/arch/powerpc/platforms/powermac/setup.c
@@ -152,7 +152,7 @@ static void pmac_show_cpuinfo(struct seq_file *m)
of_get_property(np, "d-cache-size", NULL);
seq_printf(m, "L2 cache\t:");
has_l2cache = 1;
- if (of_get_property(np, "cache-unified", NULL) != 0 && dc) {
+ if (of_get_property(np, "cache-unified", NULL) && dc) {
seq_printf(m, " %dK unified", *dc / 1024);
} else {
if (ic)
@@ -244,12 +244,12 @@ static void __init l2cr_init(void)
/* Checks "l2cr-value" property in the registry */
if (cpu_has_feature(CPU_FTR_L2CR)) {
struct device_node *np = of_find_node_by_name(NULL, "cpus");
- if (np == 0)
+ if (!np)
np = of_find_node_by_type(NULL, "cpu");
- if (np != 0) {
+ if (np) {
const unsigned int *l2cr =
of_get_property(np, "l2cr-value", NULL);
- if (l2cr != 0) {
+ if (l2cr) {
ppc_override_l2cr = 1;
ppc_override_l2cr_value = *l2cr;
_set_L2CR(0);
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 433dbeddfcf9..a3b6a4a703ab 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -274,7 +274,7 @@ int __init find_via_pmu(void)
u64 taddr;
const u32 *reg;
- if (via != 0)
+ if (via)
return 1;
vias = of_find_node_by_name(NULL, "via-pmu");
if (vias == NULL)
@@ -1152,7 +1152,7 @@ pmu_queue_request(struct adb_request *req)
req->complete = 0;
spin_lock_irqsave(&pmu_lock, flags);
- if (current_req != 0) {
+ if (current_req) {
last_req->next = req;
last_req = req;
} else {
@@ -1227,7 +1227,7 @@ pmu_start(void)
/* assert pmu_state == idle */
/* get the packet to send */
req = current_req;
- if (req == 0 || pmu_state != idle
+ if (!req || pmu_state != idle
|| (/*req->reply_expected && */req_awaiting_reply))
return;
@@ -1382,7 +1382,7 @@ next:
if ((1 << pirq) & PMU_INT_ADB) {
if ((data[0] & PMU_INT_ADB_AUTO) == 0) {
struct adb_request *req = req_awaiting_reply;
- if (req == 0) {
+ if (!req) {
printk(KERN_ERR "PMU: extra ADB reply\n");
return;
}
@@ -1749,7 +1749,7 @@ pmu_shutdown(void)
int
pmu_present(void)
{
- return via != 0;
+ return via != NULL;
}
#if defined(CONFIG_SUSPEND) && defined(CONFIG_PPC32)
@@ -2081,7 +2081,7 @@ pmu_open(struct inode *inode, struct file *file)
unsigned long flags;
pp = kmalloc(sizeof(struct pmu_private), GFP_KERNEL);
- if (pp == 0)
+ if (!pp)
return -ENOMEM;
pp->rb_get = pp->rb_put = 0;
spin_lock_init(&pp->lock);
@@ -2107,7 +2107,7 @@ pmu_read(struct file *file, char __user *buf,
unsigned long flags;
int ret = 0;
- if (count < 1 || pp == 0)
+ if (count < 1 || !pp)
return -EINVAL;
if (!access_ok(VERIFY_WRITE, buf, count))
return -EFAULT;
@@ -2164,7 +2164,7 @@ pmu_fpoll(struct file *filp, poll_table *wait)
__poll_t mask = 0;
unsigned long flags;
- if (pp == 0)
+ if (!pp)
return 0;
poll_wait(filp, &pp->wait, wait);
spin_lock_irqsave(&pp->lock, flags);
@@ -2180,7 +2180,7 @@ pmu_release(struct inode *inode, struct file *file)
struct pmu_private *pp = file->private_data;
unsigned long flags;
- if (pp != 0) {
+ if (pp) {
file->private_data = NULL;
spin_lock_irqsave(&all_pvt_lock, flags);
list_del(&pp->list);