diff options
| author | Julia Lawall <julia@diku.dk> | 2012-08-04 23:52:33 +0000 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2012-10-05 23:38:55 +0200 |
| commit | 12ecd9570d8941c15602a11725ec9b0ede48d6c2 (patch) | |
| tree | e5a73f8d08601a3ef459fcf93a9e6f4ed0cb0611 /arch/powerpc/kvm | |
| parent | 55b665b0263ae88a776071306ef1eee4b769016b (diff) | |
arch/powerpc/kvm/e500_tlb.c: fix error return code
Convert a 0 error return code to a negative one, as returned elsewhere in the
function.
A new label is also added to avoid freeing things that are known to not yet
be allocated.
A simplified version of the semantic match that finds the first problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret;
expression e,e1,e2,e3,e4,x;
@@
(
if (\(ret != 0\|ret < 0\) || ...) { ... return ...; }
|
ret = 0
)
... when != ret = e1
*x = \(kmalloc\|kzalloc\|kcalloc\|devm_kzalloc\|ioremap\|ioremap_nocache\|devm_ioremap\|devm_ioremap_nocache\)(...);
... when != x = e2
when != ret = e3
*if (x == NULL || ...)
{
... when != ret = e4
* return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/e500_tlb.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index 641f97847b95..c73389477d17 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -1233,21 +1233,27 @@ int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, } virt = vmap(pages, num_pages, VM_MAP, PAGE_KERNEL); - if (!virt) + if (!virt) { + ret = -ENOMEM; goto err_put_page; + } privs[0] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[0], GFP_KERNEL); privs[1] = kzalloc(sizeof(struct tlbe_priv) * params.tlb_sizes[1], GFP_KERNEL); - if (!privs[0] || !privs[1]) - goto err_put_page; + if (!privs[0] || !privs[1]) { + ret = -ENOMEM; + goto err_privs; + } g2h_bitmap = kzalloc(sizeof(u64) * params.tlb_sizes[1], GFP_KERNEL); - if (!g2h_bitmap) - goto err_put_page; + if (!g2h_bitmap) { + ret = -ENOMEM; + goto err_privs; + } free_gtlb(vcpu_e500); @@ -1287,10 +1293,11 @@ int kvm_vcpu_ioctl_config_tlb(struct kvm_vcpu *vcpu, kvmppc_recalc_tlb1map_range(vcpu_e500); return 0; -err_put_page: +err_privs: kfree(privs[0]); kfree(privs[1]); +err_put_page: for (i = 0; i < num_pages; i++) put_page(pages[i]); |