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| author | Ralf Baechle <ralf@linux-mips.org> | 2008-03-13 16:16:53 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2008-04-01 16:46:33 +0200 |
| commit | 5408c490a4297556cfe10ba9725b1bd13f4a8377 (patch) | |
| tree | 2db6f1e490e832e3d7b918d5fe79d7260e612d30 | |
| parent | fix uevent action-string regression (diff) | |
| download | linux-5408c490a4297556cfe10ba9725b1bd13f4a8377.tar.xz linux-5408c490a4297556cfe10ba9725b1bd13f4a8377.zip | |
[MIPS] VPE loader: Check result of memory allocation.
And while at it, make it a little cleaner. Issue originally reported by
Tiejun Chen (tiejun.chen@windriver.com).
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| -rw-r--r-- | arch/mips/kernel/vpe.c | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c index eed2dc4273e0..39804c584edd 100644 --- a/arch/mips/kernel/vpe.c +++ b/arch/mips/kernel/vpe.c @@ -262,13 +262,21 @@ void dump_mtregs(void) /* Find some VPE program space */ static void *alloc_progmem(unsigned long len) { + void *addr; + #ifdef CONFIG_MIPS_VPE_LOADER_TOM - /* this means you must tell linux to use less memory than you physically have */ - return pfn_to_kaddr(max_pfn); + /* + * This means you must tell Linux to use less memory than you + * physically have, for example by passing a mem= boot argument. + */ + addr = pfn_to_kaddr(max_pfn); + memset(addr, 0, len); #else - // simple grab some mem for now - return kmalloc(len, GFP_KERNEL); + /* simple grab some mem for now */ + addr = kzalloc(len, GFP_KERNEL); #endif + + return addr; } static void release_progmem(void *ptr) @@ -884,9 +892,10 @@ static int vpe_elfload(struct vpe * v) } v->load_addr = alloc_progmem(mod.core_size); - memset(v->load_addr, 0, mod.core_size); + if (!v->load_addr) + return -ENOMEM; - printk("VPE loader: loading to %p\n", v->load_addr); + pr_info("VPE loader: loading to %p\n", v->load_addr); if (relocate) { for (i = 0; i < hdr->e_shnum; i++) { |