From: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Date: Thu, 24 Feb 2022 06:58:05 +0000 (+0800)
Subject: habanalabs: Add check for pci_enable_device
X-Git-Tag: v5.15.73~5628
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8a842f88d0e2eb9988e1a35c2d52cb9d26e99d14;p=platform%2Fkernel%2Flinux-rpi.git

habanalabs: Add check for pci_enable_device

[ 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>
---

diff --git a/drivers/misc/habanalabs/common/debugfs.c b/drivers/misc/habanalabs/common/debugfs.c
index 985f1f3d..0b46fd2 100644
--- a/drivers/misc/habanalabs/common/debugfs.c
+++ b/drivers/misc/habanalabs/common/debugfs.c
@@ -856,6 +856,8 @@ 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);