mei: vsc: Unset the event callback on remove and probe errors

JIRA: https://issues.redhat.com/browse/RHEL-113185

commit 6175c69
Author: Hans de Goede <hansg@kernel.org>
Date:   Mon Jun 23 10:50:49 2025 +0200

    mei: vsc: Unset the event callback on remove and probe errors

    Make mei_vsc_remove() properly unset the callback to avoid a dead callback
    sticking around after probe errors or unbinding of the platform driver.

    Fixes: 386a766 ("mei: Add MEI hardware support for IVSC device")
    Signed-off-by: Hans de Goede <hansg@kernel.org>
    Link: https://lore.kernel.org/r/20250623085052.12347-8-hansg@kernel.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: Steve Best <sbest@redhat.com>

Author: sfbest

drivers/misc/mei/platform-vsc.c

@@ -380,6 +380,8 @@ static int mei_vsc_probe(struct platform_device *pdev)
 err_cancel:
 	mei_cancel_work(mei_dev);
 
+	vsc_tp_register_event_cb(tp, NULL, NULL);
+
 	mei_disable_interrupts(mei_dev);
 
 	return ret;
@@ -388,11 +390,14 @@ static int mei_vsc_probe(struct platform_device *pdev)
 static void mei_vsc_remove(struct platform_device *pdev)
 {
 	struct mei_device *mei_dev = platform_get_drvdata(pdev);
+	struct mei_vsc_hw *hw = mei_dev_to_vsc_hw(mei_dev);
 
 	pm_runtime_disable(mei_dev->dev);
 
 	mei_stop(mei_dev);
 
+	vsc_tp_register_event_cb(hw->tp, NULL, NULL);
+
 	mei_disable_interrupts(mei_dev);
 
 	mei_deregister(mei_dev);