From 8f6bce3c4f48bd79b57d6ac9f337f5aabee43ea7 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sat, 15 May 2010 23:18:16 +0200 Subject: [PATCH] PCI hotplug: Use kmemdup Use kmemdup when some other buffer is immediately copied into the allocated region. A simplified version of the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression from,to,size,flag; statement S; @@ - to = \(kmalloc\|kzalloc\)(size,flag); + to = kmemdup(from,size,flag); if (to==NULL || ...) S - memcpy(to, from, size); // Signed-off-by: Julia Lawall Signed-off-by: Jesse Barnes --- drivers/pci/hotplug/cpqphp_core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/pci/hotplug/cpqphp_core.c b/drivers/pci/hotplug/cpqphp_core.c index f184d1d2ecbe..cb7818ffd5cf 100644 --- a/drivers/pci/hotplug/cpqphp_core.c +++ b/drivers/pci/hotplug/cpqphp_core.c @@ -1075,13 +1075,12 @@ static int cpqhpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent) /* make our own copy of the pci bus structure, * as we like tweaking it a lot */ - ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL); + ctrl->pci_bus = kmemdup(pdev->bus, sizeof(*ctrl->pci_bus), GFP_KERNEL); if (!ctrl->pci_bus) { err("out of memory\n"); rc = -ENOMEM; goto err_free_ctrl; } - memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus)); ctrl->bus = pdev->bus->number; ctrl->rev = pdev->revision; -- 2.20.1