On Tue, 2010-11-30 at 14:32 +0000, David Howells wrote: > Serge Hallyn <serge.hal...@canonical.com> wrote: > > > > +int tpm_send(u32 chip_num, void *cmd, size_t buflen) > > > > Hate to nit-pick, but any particular reason you're not following the > > rest of the file and using 'struct tpm_cmd_t *cmd' here? > > Ummm... Something else I've just noticed... > > static ssize_t tpm_transmit(struct tpm_chip *chip, const char *buf, > size_t bufsiz) > > would suggest that buf is read-only, but tpm_transit() keeps casting it away, > and especially, casts it away before passing it to chip->vendor.recv()... > This would seem to indicate a logic error somewhere. > > Certainly, tpm_atml_recv() modifies the buffer it is given to...
as does tpm_tis_recv(). By the TCG spec, the return data should go in the same input buffer. > I suspect the argument and reply buffer pointers should be passed separately. It seems more like a spurious "const" in tpm_transmit(). This has been in the code for a long time. Good catch. I'll draft a cleanup for these and some other nits and send to Rajiv... thanks! dave > David > -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
