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soc: soundwire: Handle soundwire slave reset gracefully

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If soundwire slave does not implement reset functionality, handle
soundwire slave reset error gracefully in soundwire master driver.

Change-Id: I24f34d3e8665c187c4ac9dd2bc8acb2b39ad2df6
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
This commit is contained in:
Sudheer Papothi 2020-01-30 05:32:01 +05:30 • committed by Gerrit - the friendly Code Review server
commit 669089fdbd
1 changed files with 7 additions and 2 deletions
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9
soc/swr-mstr-ctrl.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
* Copyright (c) 2015-2020, The Linux Foundation. All rights reserved.
*/
#include <linux/irq.h>
@ -3038,7 +3038,12 @@ int swrm_wcd_notify(struct platform_device *pdev, u32 id, void *data)
mutex_lock(&swrm->reslock);
list_for_each_entry(swr_dev, &mstr->devices, dev_list) {
ret = swr_reset_device(swr_dev);
if (ret) {
if (ret == -ENODEV) {
dev_dbg_ratelimited(swrm->dev,
"%s slave reset not implemented\n",
__func__);
ret = 0;
} else if (ret) {
dev_err(swrm->dev,
"%s: failed to reset swr device %d\n",
__func__, swr_dev->dev_num);