Messages in this thread | | | Date | Thu, 26 Jul 2012 12:08:06 +0200 | From | Borislav Petkov <> | Subject | Re: [RFC PATCH 05/13] driver core: firmware loader: introduce firmware_buf |
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On Thu, Jul 26, 2012 at 10:51:55AM +0800, Ming Lei wrote: > On Wed, Jul 25, 2012 at 9:59 PM, Borislav Petkov <bp@amd64.org> wrote: > > > This is subtle: the caller of fw_free_buf might forget to assign NULL to > > the buf ptr. > > Who is the caller? Since it is always called inside firmware loader, we should > make sure that. > > > Why not pass struct firmware_priv *fw_priv to the function instead and ... > > No, it shouldn't. The lifetime of fw_priv is just same with request_firmware or > its work_func pair, but firmware_buf may live much longer than fw_priv. You > will see that fw_free_buf is the release function of kref in firmware_buf.
Actually, this is all moot since you're changing all this in later patches. I'm staring at the code after patch 10/13 and the check is gone.
So nevermind.
[ … ]
> Suppose you are right, it shouldn't be done in this patch since this > patch just converts to firmware_buf.
Wherever you find its suitable.
Thanks.
-- Regards/Gruss, Boris.
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