On Fri, Nov 14, 2014 at 08:52:30AM -0800, Rodrigo Vivi wrote:
> +struct psr_table {
> + /* Feature bits */
> + u8 full_link:1;
> + u8 require_aux_to_wakeup:1;
> + u8 feature_bits_rsvd:6;
> +
> + /* Wait times */
> + u8 idle_frames:4;
> + u8 lines_to_wait:3;
> + u8 wait_times_rsvd:1;
> +
> + /* TP wake up time in multiple of 100 */
> + u16 tp1_wakeup_time;
> + u16 tp2_tp3_wakeup_time;
> +} __packed;
...
> + /* Allowed VBT values goes from 0 to 15 */
> + dev_priv->vbt.psr.idle_frames = psr_table->idle_frames < 0 ? 0 :
> + psr_table->idle_frames > 15 ? 15 : psr_table->idle_frames;
smatch gives a warning here saying those conditions are always true.
psr_table->idle_frames being 4 bits in a bitfield, we can see that
smatch may well be right.
--
Damien
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