Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753777AbaDKCyz (ORCPT ); Thu, 10 Apr 2014 22:54:55 -0400 Received: from smtp.codeaurora.org ([198.145.11.231]:42083 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750710AbaDKCyx (ORCPT ); Thu, 10 Apr 2014 22:54:53 -0400 From: Saravana Kannan To: MyungJoo Ham , Kyungmin Park Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "Saravana Kannan" Subject: [PATCH] PM / devfreq: Use freq_table for available_frequencies Date: Thu, 10 Apr 2014 19:54:41 -0700 Message-Id: <1397184881-12223-1-git-send-email-skannan@codeaurora.org> X-Mailer: git-send-email 1.8.2.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some devices use freq_table instead of OPP. For those devices, the available_frequencies file shows up empty. Fix that by using freq_table to generate the available_frequencies data when OPP is not present. Signed-off-by: Saravana Kannan --- drivers/devfreq/devfreq.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index 2042ec3..a715d15 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c @@ -912,19 +912,26 @@ static ssize_t available_frequencies_show(struct device *d, struct devfreq *df = to_devfreq(d); struct device *dev = df->dev.parent; struct dev_pm_opp *opp; + unsigned int i = 0, max_state = df->profile->max_state; + bool use_opp; ssize_t count = 0; unsigned long freq = 0; rcu_read_lock(); + use_opp = dev_pm_opp_get_opp_count(dev) > 0; do { - opp = dev_pm_opp_find_freq_ceil(dev, &freq); - if (IS_ERR(opp)) - break; + if (use_opp) { + opp = dev_pm_opp_find_freq_ceil(dev, &freq); + if (IS_ERR(opp)) + break; + } else { + freq = df->profile->freq_table[i++]; + } count += scnprintf(&buf[count], (PAGE_SIZE - count - 2), "%lu ", freq); freq++; - } while (1); + } while (use_opp || (!use_opp && i < max_state)); rcu_read_unlock(); /* Truncate the trailing space */ -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/