From: Tomer Tayar <ttayar@habana.ai>
Date: Tue, 19 Jul 2022 06:01:53 +0000 (+0300)
Subject: habanalabs: add a missing lock for in_reset indication
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f0d4944c20819edf4de2c5c17963491d23e213da;p=linux.git

habanalabs: add a missing lock for in_reset indication

Add a missing lock in hl_device_resume() when it assigns a value to the
'in_reset' indication.

Signed-off-by: Tomer Tayar <ttayar@habana.ai>
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
---

diff --git a/drivers/misc/habanalabs/common/device.c b/drivers/misc/habanalabs/common/device.c
index 90e346727a7cb..6a98aae90f496 100644
--- a/drivers/misc/habanalabs/common/device.c
+++ b/drivers/misc/habanalabs/common/device.c
@@ -1091,7 +1091,9 @@ int hl_device_resume(struct hl_device *hdev)
 	/* 'in_reset' was set to true during suspend, now we must clear it in order
 	 * for hard reset to be performed
 	 */
+	spin_lock(&hdev->reset_info.lock);
 	hdev->reset_info.in_reset = 0;
+	spin_unlock(&hdev->reset_info.lock);
 
 	rc = hl_device_reset(hdev, HL_DRV_RESET_HARD);
 	if (rc) {