linux-kernel - [PATCH 4/6] habanalabs: prefer ASYNC device probing

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Date:   Mon, 31 May 2021 18:14:01 +0300
From:   Oded Gabbay <ogabbay@...nel.org>
To:     linux-kernel@...r.kernel.org
Subject: [PATCH 4/6] habanalabs: prefer ASYNC device probing

There is no dependency when probing multiple devices so indicate to the
kernel that it can probe our devices in ASYNC fashion.

This shortens insmod of the driver from ~2 minutes to 20 seconds on
a system with 8 devices.

Signed-off-by: Oded Gabbay <ogabbay@...nel.org>
---
 drivers/misc/habanalabs/common/habanalabs_drv.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/habanalabs/common/habanalabs_drv.c b/drivers/misc/habanalabs/common/habanalabs_drv.c
index bd67d4ceab56..137e7dc63d3b 100644
--- a/drivers/misc/habanalabs/common/habanalabs_drv.c
+++ b/drivers/misc/habanalabs/common/habanalabs_drv.c
@@ -574,7 +574,11 @@ static struct pci_driver hl_pci_driver = {
 	.probe = hl_pci_probe,
 	.remove = hl_pci_remove,
 	.shutdown = hl_pci_remove,
-	.driver.pm = &hl_pm_ops,
+	.driver = {
+		.name = HL_NAME,
+		.pm = &hl_pm_ops,
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+	},
 	.err_handler = &hl_pci_err_handler,
 };
 
-- 
2.25.1