6.9-stable review patch. If anyone has any objections, please let me know.
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From: Wentong Wu wentong.wu@intel.com
commit 07de60a46ae9c0583df1c644bae6d3b22d1d903d upstream.
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: 566f5ca97680 ("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 Acked-by: Sakari Ailus sakari.ailus@linux.intel.com Link: https://lore.kernel.org/r/20240625081047.4178494-2-wentong.wu@intel.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/misc/mei/vsc-tp.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/drivers/misc/mei/vsc-tp.c b/drivers/misc/mei/vsc-tp.c index e6a98dba8a73..5f3195636e53 100644 --- a/drivers/misc/mei/vsc-tp.c +++ b/drivers/misc/mei/vsc-tp.c @@ -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,