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UBUNTU: SAUCE: mei: vsc: Enhance IVSC chipset stability during warm reboot

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BugLink: https://bugs.launchpad.net/bugs/2067364

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: 566f5ca976 ("mei: Add transport driver for IVSC device")
Cc: stable@vger.kernel.org # for 6.8+
Signed-off-by: Wentong Wu <wentong.wu@intel.com>
Tested-by: Jason Chen <jason.z.chen@intel.com>

(cherry picked from https://lore.kernel.org/all/20240624014223.4171341-2-wentong.wu@intel.com/)
Signed-off-by: You-Sheng Yang <vicamo.yang@canonical.com>
Acked-by: Paolo Pisati <paolo.pisati@canonical.com>
Acked-by: Timo Aaltonen <tjaalton@ubuntu.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Wentong Wu
2024-06-25 11:31:00 +02:00
committed by Stefan Bader
parent 14fffe417c
commit 569570c6ef
1 changed files with 14 additions and 0 deletions
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drivers/misc/mei/vsc-tp.c
+14
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@@ -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,