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authorDan Carpenter <dan.carpenter@oracle.com>2017-09-30 11:16:51 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-10-04 11:39:28 +0300
commit846df244ebefbc9f7b91e9ae7a5e5a2e69fb4772 (patch)
treedcefb9b691d5989dfea4c53cc310e0a9872c0815 /drivers/misc
parent378f79cab12b669928f3a4037f023837ead2ce0c (diff)
downloadlinux-846df244ebefbc9f7b91e9ae7a5e5a2e69fb4772.tar.xz
misc: pci_endpoint_test: Avoid triggering a BUG()
If you call ida_simple_remove(&pci_endpoint_test_ida, id) with a negative "id" then it triggers an immediate BUG_ON(). Let's not allow that. Fixes: 2c156ac71c6b ("misc: Add host side PCI driver for PCI test function device") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/pci_endpoint_test.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c
index c0d323077ad0..d40a34f594c7 100644
--- a/drivers/misc/pci_endpoint_test.c
+++ b/drivers/misc/pci_endpoint_test.c
@@ -597,6 +597,8 @@ static void pci_endpoint_test_remove(struct pci_dev *pdev)
if (sscanf(misc_device->name, DRV_MODULE_NAME ".%d", &id) != 1)
return;
+ if (id < 0)
+ return;
misc_deregister(&test->miscdev);
ida_simple_remove(&pci_endpoint_test_ida, id);