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platform/x86: pmt: Fix a potential Oops on error in probe

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The "ns->attr_grp" pointer can be NULL so this error handling code needs
to check for that to avoid an Oops.

Fixes: e2729113ce ("platform/x86: Intel PMT class driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: David E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20201117072251.GC1111239@mwanda
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Dan Carpenter 2020-11-17 10:22:51 +03:00 committed by Hans de Goede
parent 469bc41c29
commit d3d73d25e0
1 changed files with 2 additions and 1 deletions
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3
drivers/platform/x86/intel_pmt_class.c
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@ -225,7 +225,8 @@ static int intel_pmt_dev_register(struct intel_pmt_entry *entry,
return 0;
fail_ioremap:
sysfs_remove_group(entry->kobj, ns->attr_grp);
if (ns->attr_grp)
sysfs_remove_group(entry->kobj, ns->attr_grp);
fail_sysfs:
device_unregister(dev);
fail_dev_create: