Re: [PATCH] tpm: handle negative priv->response_len in tpm_common_read

[Jarkko Sakkinen]

On Tue, 2020-01-07 at 14:04 -0800, Tadeusz Struk wrote:
> The priv->responce_length can hold the size of an response or
> an negative error code, and the tpm_common_read() needs to handle
> both cases correctly. Changed the type of responce_length to
> signed and accounted for negative value in tpm_common_read()
> 
> Cc: stable@xxxxxxxxxxxxxxx
> Fixes: d23d12484307 ("tpm: fix invalid locking in NONBLOCKING mode")
> Reported-by: Laura Abbott <labbott@xxxxxxxxxx>
> Signed-off-by: Tadeusz Struk <tadeusz.struk@xxxxxxxxx>

Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx>

Adding to the next PR.

/Jarkko