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hwmon: (coretemp) Fix oops on driver load

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This is for stable kernel branch 3.0 only. Previous and later versions
have different code paths and are not affected by this bug.

If the CPU microcode is too old, the coretemp driver won't work. But
instead of failing gracefully, it currently oops. Check for NULL
platform device data to avoid this.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare
2011-12-01 17:21:28 +01:00
committed by Greg Kroah-Hartman
parent 20f8d72586
commit 0500898d30
1 changed files with 2 additions and 0 deletions
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2
drivers/hwmon/coretemp.c
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@@ -539,6 +539,8 @@ static void coretemp_add_core(unsigned int cpu, int pkg_flag)
return;
pdata = platform_get_drvdata(pdev);
if (!pdata)
return;
err = create_core_data(pdata, pdev, cpu, pkg_flag);
if (err)