2014-09-25 21:32 GMT+09:00 Dolev Raviv <draviv@xxxxxxxxxxxxxx>:
> +int ufshcd_change_power_mode(struct ufs_hba *hba,
> + struct ufs_pa_layer_attr *pwr_mode)
> +{
> + int ret;
> +
> + /* if already configured to the requested pwr_mode */
> + if (pwr_mode->gear_rx == hba->pwr_info.gear_rx &&
> + pwr_mode->gear_tx == hba->pwr_info.gear_tx &&
> + pwr_mode->lane_rx == hba->pwr_info.lane_rx &&
> + pwr_mode->lane_tx == hba->pwr_info.lane_tx &&
> + pwr_mode->pwr_rx == hba->pwr_info.pwr_rx &&
> + pwr_mode->pwr_tx == hba->pwr_info.pwr_tx &&
> + pwr_mode->hs_rate == hba->pwr_info.hs_rate) {
> + dev_dbg(hba->dev, "%s: power already configured\n", __func__);
> + return 0;
> }
If the UFS Power management level 5 is chosen, the UIC link is down
during suspend. And the power mode should be configured during resume
again. Unfortunately, it will not be configured because the above
condition hits unintentionally.
I would like to propose a fix which changes the type of hba->pwr_info to
struct ufs_pwr_mode_info, and turn off hba->pwr_info.is_valid when UIC
link is down and add check for hba->pwr_info.is_valid in above condition.
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