On Thu, Jan 26, 2017 at 09:22:48PM +0100, Michal Such??nek wrote: > This is repeated a few times in the driver so I added memset to quiet > gcc and make behavior deterministic in case the unused fields get some > meaning in the future.
Yep, reserved certainly needs to be zeroed.. Can you send a patch? memset is overkill... > However, in tpm_ibmvtpm_send the structure is initialized as > > struct ibmvtpm_crq crq; > __be64 *word = (__be64 *)&crq; > ... > crq.valid = (u8)IBMVTPM_VALID_CMD; > crq.msg = (u8)VTPM_TPM_COMMAND; > crq.len = cpu_to_be16(count); > crq.data = cpu_to_be32(ibmvtpm->rtce_dma_handle); > > and submitted with > > rc = ibmvtpm_send_crq(ibmvtpm->vdev, be64_to_cpu(word[0]), > be64_to_cpu(word[1])); > meaning it is swapped twice. No idea, Nayna may know. My guess is that '__be64 *word' should be 'u64 *word'... Jason