From: Qiufang Dai <qiufang.dai@amlogic.com>
Date: Thu, 26 Dec 2019 04:05:22 +0000 (+0800)
Subject: suspend: fix freeze abort hangup which caused by insmod [1/1]
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2fd0b28e63fc9a5855b5a5a6ae4a1137df17d8e9;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

suspend: fix freeze abort hangup which caused by insmod [1/1]

PD#GH-134

Problem:
When freeze abort happen, it will lose device_unblock_probing(),
so device probe is blocked.

Solution:
When freeze abort happen, release device_block_probing

Verify:
SM1_S905D3_AC200

Change-Id: I3e591fe9ed392b6a4d30285817a91fbfec25336f
Signed-off-by: Qiufang Dai <qiufang.dai@amlogic.com>
---

diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
index 71050f5841a3..853dced7fb26 100644
--- a/kernel/power/suspend.c
+++ b/kernel/power/suspend.c
@@ -314,6 +314,11 @@ static int suspend_prepare(suspend_state_t state)
 	if (!error)
 		return 0;
 
+#ifdef CONFIG_AMLOGIC_MODIFY
+	/* Allow device probing and trigger re-probing of deferred devices */
+	device_unblock_probing();
+#endif
+
 	suspend_stats.failed_freeze++;
 	dpm_save_failed_step(SUSPEND_FREEZE);
  Finish: