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usb: misc: onboard_usb_dev: skip suspend/resume sequence for USB5744 SMBus support

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commit ce15d6b3d5c3c6f78290066be0f0a4fd89cdeb5b upstream.

USB5744 SMBus initialization is done once in probe() and doing it in resume
is not supported so avoid going into suspend and reset the HUB.

There is a sysfs property 'always_powered_in_suspend' to implement this
feature but since default state should be set to a working configuration
so override this property value.

It fixes the suspend/resume testcase on Kria KR260 Robotics Starter Kit.

Fixes: 6782311d04 ("usb: misc: onboard_usb_dev: add Microchip usb5744 SMBus programming support")
Cc: stable@vger.kernel.org
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@amd.com>
Link: https://lore.kernel.org/r/1733165302-1694891-1-git-send-email-radhey.shyam.pandey@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Radhey Shyam Pandey
2024-12-03 00:18:22 +05:30
committed by Greg Kroah-Hartman
parent 7143efb58e
commit 1832e61d87
1 changed files with 3 additions and 1 deletions
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drivers/usb/misc/onboard_usb_dev.c
+3 -1
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@@ -407,8 +407,10 @@ static int onboard_dev_probe(struct platform_device *pdev)
}
if (of_device_is_compatible(pdev->dev.of_node, "usb424,2744") ||
of_device_is_compatible(pdev->dev.of_node, "usb424,5744"))
of_device_is_compatible(pdev->dev.of_node, "usb424,5744")) {
err = onboard_dev_5744_i2c_init(client);
onboard_dev->always_powered_in_suspend = true;
}
put_device(&client->dev);
if (err < 0)