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cpufreq: imx6q: don't warn for disabling a non-existing frequency 

[ Upstream commit 11a3b0ac33 ]

It is confusing if a warning is given for disabling a non-existent
frequency of the operating performance points (OPP). In this case
the function dev_pm_opp_disable() returns -ENODEV. Check the return
value and avoid the output of a warning in this case. Avoid code
duplication by using a separate function.

Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
[ Viresh : Updated commit subject ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Stable-dep-of: 2e4e0984c7 ("cpufreq: imx6q: Don't disable 792 Mhz OPP unnecessarily")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christoph Niedermaier 2023-05-12 17:07:11 +02:00 committed by Greg Kroah-Hartman
parent 904f9c1465
commit 46ddcc755f
1 changed files with 16 additions and 14 deletions
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30
drivers/cpufreq/imx6q-cpufreq.c
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@ -240,6 +240,14 @@ static struct cpufreq_driver imx6q_cpufreq_driver = {
.suspend = cpufreq_generic_suspend,
};
static void imx6x_disable_freq_in_opp(struct device *dev, unsigned long freq)
{
int ret = dev_pm_opp_disable(dev, freq);
if (ret < 0 && ret != -ENODEV)
dev_warn(dev, "failed to disable %ldMHz OPP\n", freq / 1000000);
}
#define OCOTP_CFG3 0x440
#define OCOTP_CFG3_SPEED_SHIFT 16
#define OCOTP_CFG3_SPEED_1P2GHZ 0x3
@ -275,17 +283,15 @@ static void imx6q_opp_check_speed_grading(struct device *dev)
val &= 0x3;
if (val < OCOTP_CFG3_SPEED_996MHZ)
if (dev_pm_opp_disable(dev, 996000000))
dev_warn(dev, "failed to disable 996MHz OPP\n");
imx6x_disable_freq_in_opp(dev, 996000000);
if (of_machine_is_compatible("fsl,imx6q") ||
of_machine_is_compatible("fsl,imx6qp")) {
if (val != OCOTP_CFG3_SPEED_852MHZ)
if (dev_pm_opp_disable(dev, 852000000))
dev_warn(dev, "failed to disable 852MHz OPP\n");
imx6x_disable_freq_in_opp(dev, 852000000);
if (val != OCOTP_CFG3_SPEED_1P2GHZ)
if (dev_pm_opp_disable(dev, 1200000000))
dev_warn(dev, "failed to disable 1.2GHz OPP\n");
imx6x_disable_freq_in_opp(dev, 1200000000);
}
iounmap(base);
put_node:
@ -338,20 +344,16 @@ static int imx6ul_opp_check_speed_grading(struct device *dev)
val >>= OCOTP_CFG3_SPEED_SHIFT;
val &= 0x3;
if (of_machine_is_compatible("fsl,imx6ul")) {
if (of_machine_is_compatible("fsl,imx6ul"))
if (val != OCOTP_CFG3_6UL_SPEED_696MHZ)
if (dev_pm_opp_disable(dev, 696000000))
dev_warn(dev, "failed to disable 696MHz OPP\n");
}
imx6x_disable_freq_in_opp(dev, 696000000);
if (of_machine_is_compatible("fsl,imx6ull")) {
if (val != OCOTP_CFG3_6ULL_SPEED_792MHZ)
if (dev_pm_opp_disable(dev, 792000000))
dev_warn(dev, "failed to disable 792MHz OPP\n");
imx6x_disable_freq_in_opp(dev, 792000000);
if (val != OCOTP_CFG3_6ULL_SPEED_900MHZ)
if (dev_pm_opp_disable(dev, 900000000))
dev_warn(dev, "failed to disable 900MHz OPP\n");
imx6x_disable_freq_in_opp(dev, 900000000);
}
return ret;