Commit 07de60a4 authored by Wentong Wu's avatar Wentong Wu Committed by Greg Kroah-Hartman
Browse files

mei: vsc: Enhance IVSC chipset stability during warm reboot 



During system shutdown, incorporate reset logic to ensure the IVSC
chipset remains in a valid state. This adjustment guarantees that
the IVSC chipset operates in a known state following a warm reboot.

Fixes: 566f5ca9 ("mei: Add transport driver for IVSC device")
Cc: stable@vger.kernel.org # for 6.8+
Signed-off-by: default avatarWentong Wu <wentong.wu@intel.com>
Tested-by: default avatarJason Chen <jason.z.chen@intel.com>
Acked-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/20240625081047.4178494-2-wentong.wu@intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 6bef98ba

drivers/misc/mei/vsc-tp.c

+14 −0
Original line number Diff line number Diff line
@@ -568,6 +568,19 @@ static void vsc_tp_remove(struct spi_device *spi) 
	free_irq(spi->irq, tp);

}



static void vsc_tp_shutdown(struct spi_device *spi)

{

	struct vsc_tp *tp = spi_get_drvdata(spi);



	platform_device_unregister(tp->pdev);



	mutex_destroy(&tp->mutex);



	vsc_tp_reset(tp);



	free_irq(spi->irq, tp);

}



static const struct acpi_device_id vsc_tp_acpi_ids[] = {

	{ "INTC1009" }, /* Raptor Lake */

	{ "INTC1058" }, /* Tiger Lake */
@@ -580,6 +593,7 @@ MODULE_DEVICE_TABLE(acpi, vsc_tp_acpi_ids); 
static struct spi_driver vsc_tp_driver = {

	.probe = vsc_tp_probe,

	.remove = vsc_tp_remove,

	.shutdown = vsc_tp_shutdown,

	.driver = {

		.name = "vsc-tp",

		.acpi_match_table = vsc_tp_acpi_ids,