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Date: Sat, 15 May 2010 23:19:30 +0200 (CEST) From: Julia Lawall <julia@...u.dk> To: Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org, linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org Subject: [PATCH 21/37] drivers/hid: Use kmemdup From: Julia Lawall <julia@...u.dk> 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@...u.dk> --- drivers/hid/hid-core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff -u -p a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -653,10 +653,9 @@ int hid_parse_report(struct hid_device * if (device->driver->report_fixup) device->driver->report_fixup(device, start, size); - device->rdesc = kmalloc(size, GFP_KERNEL); + device->rdesc = kmemdup(start, size, GFP_KERNEL); if (device->rdesc == NULL) return -ENOMEM; - memcpy(device->rdesc, start, size); device->rsize = size; parser = vmalloc(sizeof(struct hid_parser)); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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