linux-kernel - [PATCH] platform: x86: intel-hid: Add missing ->thaw callback

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Message-ID: <3369188.n8HfSBcO3V@aspire.rjw.lan>
Date:   Tue, 18 Apr 2017 15:49:06 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Darren Hart <dvhart@...radead.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        platform-driver-x86@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH] platform: x86: intel-hid: Add missing ->thaw callback

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

The intel-hid driver is missing a PM ->thaw callback allowing the
device to go back to the operational state after creating a
hibernation image or when there is an image restoration error during
resume.

The lack of the ->thaw callback basically means that all events
signaled by the device are discarded after a hibernation image has
been created which may be problematic, for example, if the image
cannot be saved (eg. due to an I/O issue with storage).

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/platform/x86/intel-hid.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-pm/drivers/platform/x86/intel-hid.c
===================================================================
--- linux-pm.orig/drivers/platform/x86/intel-hid.c
+++ linux-pm/drivers/platform/x86/intel-hid.c
@@ -136,6 +136,7 @@ static int intel_hid_pl_resume_handler(s

 static const struct dev_pm_ops intel_hid_pl_pm_ops = {
 	.freeze  = intel_hid_pl_suspend_handler,
+	.thaw  = intel_hid_pl_resume_handler,
 	.restore  = intel_hid_pl_resume_handler,
 	.suspend  = intel_hid_pl_suspend_handler,
 	.resume  = intel_hid_pl_resume_handler,