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From: Austin Christ <austinwc@codeaurora.org>
To: wsa@the-dreams.de, linux-i2c@vger.kernel.org,
	linux-arm-msm@vger.kernel.org
Cc: Austin Christ <austinwc@codeaurora.org>
Subject: [PATCH] i2c: qup: Add shutdown method
Date: Tue, 16 Jan 2018 14:35:33 -0700	[thread overview]
Message-ID: <1516138534-30842-1-git-send-email-austinwc@codeaurora.org> (raw)

This shutdown method disables I2C to avoid corrupting a new kernel
started with kexec.

Signed-off-by: Austin Christ <austinwc@codeaurora.org>
---
 drivers/i2c/busses/i2c-qup.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c
index 08f8e01..b96f01a 100644
--- a/drivers/i2c/busses/i2c-qup.c
+++ b/drivers/i2c/busses/i2c-qup.c
@@ -1651,12 +1651,16 @@ static int qup_i2c_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void qup_i2c_shutdown(struct platform_device *pdev)
+{
+	qup_i2c_remove(pdev);
+}
+
 #ifdef CONFIG_PM
 static int qup_i2c_pm_suspend_runtime(struct device *device)
 {
 	struct qup_i2c_dev *qup = dev_get_drvdata(device);
 
-	dev_dbg(device, "pm_runtime: suspending...\n");
 	qup_i2c_disable_clocks(qup);
 	return 0;
 }
@@ -1717,6 +1721,7 @@ static int qup_i2c_resume(struct device *device)
 static struct platform_driver qup_i2c_driver = {
 	.probe  = qup_i2c_probe,
 	.remove = qup_i2c_remove,
+	.shutdown = qup_i2c_shutdown,
 	.driver = {
 		.name = "i2c_qup",
 		.pm = &qup_i2c_qup_pm_ops,
-- 
Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.

             reply	other threads:[~2018-01-16 21:35 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-01-16 21:35 Austin Christ [this message]
2018-01-16 21:35 ` [PATCH] i2c-qup: reduce verbosity on DMA channel not found messages Austin Christ
2018-01-31 16:54   ` Timur Tabi
2018-02-02 23:36 ` [PATCH] i2c: qup: Add shutdown method Bjorn Andersson

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