On Sun, Jan 18, 2015 at 06:08:12PM +0100, SF Markus Elfring wrote: > From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx> > Date: Sun, 18 Jan 2015 17:30:23 +0100 > > The iounmap() function performs also input parameter validation. > Thus the test around the call is not needed. Is this guaranteed for all arch'es? I expect that it would be, but I see that, for instance, ARM allows replaceable iounmap() for subarchitectures. Also, I see checks for various sorts of static mappings in ARM and x86; these likely (always?) cover the NULL case, but they're not always straightforward. Anyway, I'm essentially saying that I'd like to be 100% sure we have a guarantee before dropping all these. > This issue was detected by using the Coccinelle software. What script? Hand-rolled I guess? Brian -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
