linux-arm-kernel.lists.infradead.org archive mirror
 help / color / mirror / Atom feed
From: Florian Fainelli <f.fainelli@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: Florian Fainelli <f.fainelli@gmail.com>,
	Gregory Fong <gregory.0xf0@gmail.com>,
	"open list:BROADCOM STB AVS CPUFREQ DRIVER"
	<linux-pm@vger.kernel.org>,
	Viresh Kumar <viresh.kumar@linaro.org>,
	"Rafael J. Wysocki" <rjw@rjwysocki.net>,
	"maintainer:BROADCOM STB AVS CPUFREQ DRIVER"
	<bcm-kernel-feedback-list@broadcom.com>,
	Markus Mayer <mmayer@broadcom.com>,
	Brian Norris <computersforpeace@gmail.com>,
	"moderated list:BROADCOM BCM7XXX ARM ARCHITECTURE"
	<linux-arm-kernel@lists.infradead.org>
Subject: [PATCH 2/2] cpufreq: brcmstb-avs-cpufreq: Fix types for voltage/frequency
Date: Wed, 22 May 2019 11:45:47 -0700	[thread overview]
Message-ID: <20190522184547.31791-3-f.fainelli@gmail.com> (raw)
In-Reply-To: <20190522184547.31791-1-f.fainelli@gmail.com>

What we read back from the register is going to be capped at 32-bits,
and cpufreq_freq_table.frequency is an unsigned int. Avoid any possible
value truncation by using the appropriate return value.

Fixes: de322e085995 ("cpufreq: brcmstb-avs-cpufreq: AVS CPUfreq driver for Broadcom STB SoCs")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/cpufreq/brcmstb-avs-cpufreq.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/cpufreq/brcmstb-avs-cpufreq.c b/drivers/cpufreq/brcmstb-avs-cpufreq.c
index 6ed53ca8aa98..77b0e5d0fb13 100644
--- a/drivers/cpufreq/brcmstb-avs-cpufreq.c
+++ b/drivers/cpufreq/brcmstb-avs-cpufreq.c
@@ -384,12 +384,12 @@ static int brcm_avs_set_pstate(struct private_data *priv, unsigned int pstate)
 	return __issue_avs_command(priv, AVS_CMD_SET_PSTATE, true, args);
 }
 
-static unsigned long brcm_avs_get_voltage(void __iomem *base)
+static u32 brcm_avs_get_voltage(void __iomem *base)
 {
 	return readl(base + AVS_MBOX_VOLTAGE1);
 }
 
-static unsigned long brcm_avs_get_frequency(void __iomem *base)
+static u32 brcm_avs_get_frequency(void __iomem *base)
 {
 	return readl(base + AVS_MBOX_FREQUENCY) * 1000;	/* in kHz */
 }
@@ -653,14 +653,14 @@ static ssize_t show_brcm_avs_voltage(struct cpufreq_policy *policy, char *buf)
 {
 	struct private_data *priv = policy->driver_data;
 
-	return sprintf(buf, "0x%08lx\n", brcm_avs_get_voltage(priv->base));
+	return sprintf(buf, "0x%08x\n", brcm_avs_get_voltage(priv->base));
 }
 
 static ssize_t show_brcm_avs_frequency(struct cpufreq_policy *policy, char *buf)
 {
 	struct private_data *priv = policy->driver_data;
 
-	return sprintf(buf, "0x%08lx\n", brcm_avs_get_frequency(priv->base));
+	return sprintf(buf, "0x%08x\n", brcm_avs_get_frequency(priv->base));
 }
 
 cpufreq_freq_attr_ro(brcm_avs_pstate);
-- 
2.17.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2019-05-22 18:46 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-22 18:45 [PATCH 0/2] cpufreq: brcmstb-avs-cpufreq: Couple fixes Florian Fainelli
2019-05-22 18:45 ` [PATCH 1/2] cpufreq: brcmstb-avs-cpufreq: Fix initial command check Florian Fainelli
2019-05-22 18:45 ` Florian Fainelli [this message]
2019-05-27 10:51 ` [PATCH 0/2] cpufreq: brcmstb-avs-cpufreq: Couple fixes Rafael J. Wysocki
2019-05-29 17:01   ` Florian Fainelli
2019-06-03 19:55     ` Markus Mayer
2019-06-04  4:03       ` Viresh Kumar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20190522184547.31791-3-f.fainelli@gmail.com \
    --to=f.fainelli@gmail.com \
    --cc=bcm-kernel-feedback-list@broadcom.com \
    --cc=computersforpeace@gmail.com \
    --cc=gregory.0xf0@gmail.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=mmayer@broadcom.com \
    --cc=rjw@rjwysocki.net \
    --cc=viresh.kumar@linaro.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).