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clk: scpi: don't add cpufreq device if the scpi dvfs node is disabled 

Currently we add the virtual cpufreq device unconditionally even when
the SCPI DVFS clock provider node is disabled. This will cause cpufreq
driver to throw errors when it gets initailised on boot/modprobe and
also when the CPUs are hot-plugged back in.

This patch fixes the issue by adding the virtual cpufreq device only if
the SCPI DVFS clock provider is available and registered.

Fixes: 9490f01e24 ("clk: scpi: add support for cpufreq virtual device")
Reported-by: Michał Zegan <webczat_200@poczta.onet.pl>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Tested-by: Michał Zegan <webczat_200@poczta.onet.pl>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Sudeep Holla 2017-01-06 12:34:30 +00:00 committed by Stephen Boyd
parent 4263499a6e
commit 67bcc2c5f1
1 changed files with 8 additions and 6 deletions
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14
drivers/clk/clk-scpi.c
View File

@ -290,13 +290,15 @@ static int scpi_clocks_probe(struct platform_device *pdev)
of_node_put(child);
return ret;
}
}
/* Add the virtual cpufreq device */
cpufreq_dev = platform_device_register_simple("scpi-cpufreq",
-1, NULL, 0);
if (IS_ERR(cpufreq_dev))
pr_warn("unable to register cpufreq device");
if (match->data != &scpi_dvfs_ops)
continue;
/* Add the virtual cpufreq device if it's DVFS clock provider */
cpufreq_dev = platform_device_register_simple("scpi-cpufreq",
-1, NULL, 0);
if (IS_ERR(cpufreq_dev))
pr_warn("unable to register cpufreq device");
}
return 0;
}