From: Jiasheng Jiang <jiasheng@iscas.ac.cn> stable inclusion from stable-v5.10.110 commit 7b59afe84ad916906beb0ec7eb04918260d1c552 bugzilla: https://gitee.com/openeuler/kernel/issues/I574AL Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 9c27896ac1bb83ea5c461ce6f7089d02102a2b21 ] As the potential failure of the pci_enable_device(), it should be better to check the return value and return error if fails. Fixes: 70b2f993ea4a ("habanalabs: create common folder") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Yu Liao <liaoyu15@huawei.com> Reviewed-by: Wei Li <liwei391@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> --- drivers/misc/habanalabs/common/debugfs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c index 912ddfa360b1..9716b0728b30 100644 --- a/drivers/misc/habanalabs/common/debugfs.c +++ b/drivers/misc/habanalabs/common/debugfs.c @@ -859,6 +859,8 @@ static ssize_t hl_set_power_state(struct file *f, const char __user *buf, pci_set_power_state(hdev->pdev, PCI_D0); pci_restore_state(hdev->pdev); rc = pci_enable_device(hdev->pdev); + if (rc < 0) + return rc; } else if (value == 2) { pci_save_state(hdev->pdev); pci_disable_device(hdev->pdev); -- 2.20.1