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score: cleanups: dead code, 0 as pointer, shadowed variables

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A few smaller issues found by sparse, some code that was
never used, two instances of '0' instead of 'NULL' and
local variables shadowing another one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2009-06-27 14:46:35 +02:00
parent bddc605955
commit c606747225
3 changed files with 8 additions and 20 deletions
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12
arch/score/kernel/module.c
View File

@ -57,17 +57,17 @@ int apply_relocate(Elf_Shdr *sechdrs, const char *strtab,
for (i = 0; i < relsec->sh_size / sizeof(Elf32_Rel); i++, rel++) {
unsigned long loc;
Elf32_Sym *sym;
s32 offset;
s32 r_offset;
offset = ELF32_R_SYM(rel->r_info);
if ((offset < 0) ||
(offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {
r_offset = ELF32_R_SYM(rel->r_info);
if ((r_offset < 0) ||
(r_offset > (symsec->sh_size / sizeof(Elf32_Sym)))) {
printk(KERN_ERR "%s: bad relocation, section %d reloc %d\n",
me->name, relindex, i);
return -ENOEXEC;
}
sym = ((Elf32_Sym *)symsec->sh_addr) + offset;
sym = ((Elf32_Sym *)symsec->sh_addr) + r_offset;
if ((rel->r_offset < 0) ||
(rel->r_offset > dstsec->sh_size - sizeof(u32))) {
@ -152,7 +152,7 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab,
/* Given an address, look for it in the module exception tables. */
const struct exception_table_entry *search_module_dbetables(unsigned long addr)
{
return 0;
return NULL;
}
/* Put in dbe list if necessary. */

2
arch/score/kernel/signal.c
View File

@ -212,7 +212,7 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
err |= copy_siginfo_to_user(&frame->rs_info, info);
err |= __put_user(0, &frame->rs_uc.uc_flags);
err |= __put_user(0, &frame->rs_uc.uc_link);
err |= __put_user(NULL, &frame->rs_uc.uc_link);
err |= __put_user((void __user *)current->sas_ss_sp,
&frame->rs_uc.uc_stack.ss_sp);
err |= __put_user(sas_ss_flags(regs->regs[0]),

14
arch/score/kernel/sys_score.c
View File

@ -31,10 +31,7 @@
#include <linux/syscalls.h>
#include <asm/syscalls.h>
unsigned long shm_align_mask = PAGE_SIZE - 1;
EXPORT_SYMBOL(shm_align_mask);
asmlinkage unsigned
asmlinkage long
sys_mmap2(unsigned long addr, unsigned long len, unsigned long prot,
unsigned long flags, unsigned long fd, unsigned long pgoff)
{
@ -106,15 +103,6 @@ score_execve(struct pt_regs *regs)
return error;
}
/*
* If we ever come here the user sp is bad. Zap the process right away.
* Due to the bad stack signaling wouldn't work.
*/
void bad_stack(void)
{
do_exit(SIGSEGV);
}
/*
* Do a system call from kernel instead of calling sys_execve so we
* end up with proper pt_regs.