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PCI hotplug: Use kmemdup

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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/)

// <smpl>
@@
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);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
This commit is contained in:
Julia Lawall 2010-05-15 23:18:16 +02:00 committed by Jesse Barnes
parent b79995700e
commit 8f6bce3c4f
1 changed files with 1 additions and 2 deletions
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3
drivers/pci/hotplug/cpqphp_core.c
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@ -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, /* make our own copy of the pci bus structure,
* as we like tweaking it a lot */ * 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) { if (!ctrl->pci_bus) {
err("out of memory\n"); err("out of memory\n");
rc = -ENOMEM; rc = -ENOMEM;
goto err_free_ctrl; goto err_free_ctrl;
} }
memcpy(ctrl->pci_bus, pdev->bus, sizeof(*ctrl->pci_bus));
ctrl->bus = pdev->bus->number; ctrl->bus = pdev->bus->number;
ctrl->rev = pdev->revision; ctrl->rev = pdev->revision;