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From: Yong Wu <yong.wu@mediatek.com>
To: Joerg Roedel <joro@8bytes.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Rob Herring <robh+dt@kernel.org>
Cc: Robin Murphy <robin.murphy@arm.com>,
	Tomasz Figa <tfiga@google.com>, Will Deacon <will.deacon@arm.com>,
	<linux-mediatek@lists.infradead.org>,
	<srv_heupstream@mediatek.com>, <devicetree@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<iommu@lists.linux-foundation.org>, <arnd@arndb.de>,
	<yingjoe.chen@mediatek.com>, <yong.wu@mediatek.com>,
	<youlin.pei@mediatek.com>,
	Nicolas Boichat <drinkcat@chromium.org>
Subject: [PATCH 02/13] driver core: Remove the link if there is no driver with AUTO flag
Date: Tue, 1 Jan 2019 12:51:05 +0800
Message-ID: <1546318276-18993-3-git-send-email-yong.wu@mediatek.com> (raw)
In-Reply-To: <1546318276-18993-1-git-send-email-yong.wu@mediatek.com>

DL_FLAG_AUTOREMOVE_CONSUMER/SUPPLIER means "Remove the link
automatically on consumer/supplier driver unbind", that means we should
remove whole the device_link when there is no this driver no matter what
the ref_count of the link is.

CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
---
The ref_count of our device_link normally is over 1. When the consumer
device driver is removed, whole the device_link should be removed.
Thus, I add this patch.
---
 drivers/base/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 04bbcd7..4f3c5bc 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -511,7 +511,7 @@ static void __device_links_no_driver(struct device *dev)
 			continue;
 
 		if (link->flags & DL_FLAG_AUTOREMOVE_CONSUMER)
-			kref_put(&link->kref, __device_link_del);
+			__device_link_del(&link->kref);
 		else if (link->status != DL_STATE_SUPPLIER_UNBIND)
 			WRITE_ONCE(link->status, DL_STATE_AVAILABLE);
 	}
@@ -556,7 +556,7 @@ void device_links_driver_cleanup(struct device *dev)
 		 */
 		if (link->status == DL_STATE_SUPPLIER_UNBIND &&
 		    link->flags & DL_FLAG_AUTOREMOVE_SUPPLIER)
-			kref_put(&link->kref, __device_link_del);
+			__device_link_del(&link->kref);
 
 		WRITE_ONCE(link->status, DL_STATE_DORMANT);
 	}
-- 
1.9.1


  parent reply index

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-01  4:51 [PATCH 00/13] Clean up "mediatek,larb" after adding device_link Yong Wu
2019-01-01  4:51 ` [PATCH 01/13] dt-binding: mediatek: Get rid of mediatek,larb for multimedia HW Yong Wu
2019-01-11 14:58   ` Rob Herring
2019-02-25 23:54   ` Evan Green
2019-01-01  4:51 ` Yong Wu [this message]
2019-02-25 23:53   ` [PATCH 02/13] driver core: Remove the link if there is no driver with AUTO flag Evan Green
2019-02-27 14:33     ` Yong Wu
2019-03-05 19:03       ` Evan Green
2019-03-12 14:21         ` Matthias Brugger
2019-03-12 23:17           ` Evan Green
2019-03-13  9:08             ` Yong Wu
2019-01-01  4:51 ` [PATCH 03/13] iommu/mediatek: Add probe_defer for smi-larb Yong Wu
2019-02-25 23:54   ` Evan Green
2019-02-27 14:33     ` Yong Wu
2019-03-05 19:02       ` Evan Green
2019-01-01  4:51 ` [PATCH 04/13] iommu/mediatek: Add device_link between the consumer and the larb devices Yong Wu
2019-02-25 23:54   ` Evan Green
2019-02-27 14:34     ` Yong Wu
2019-02-27 19:30   ` Robin Murphy
2019-03-13  9:11     ` Yong Wu
2019-01-01  4:51 ` [PATCH 05/13] memory: mtk-smi: Add device-link between smi-larb and smi-common Yong Wu
2019-02-25 23:54   ` Evan Green
2019-02-27 14:33     ` Yong Wu
2019-03-05 19:02       ` Evan Green
2019-01-01  4:51 ` [PATCH 06/13] media: mtk-jpeg: Get rid of mtk_smi_larb_get/put Yong Wu
2019-02-25 23:55   ` Evan Green
2019-01-01  4:51 ` [PATCH 07/13] media: mtk-mdp: " Yong Wu
2019-02-25 23:55   ` Evan Green
2019-01-01  4:51 ` [PATCH 08/13] media: mtk-vcodec: " Yong Wu
2019-02-25 23:55   ` Evan Green
2019-01-01  4:51 ` [PATCH 09/13] drm/mediatek: " Yong Wu
2019-02-25 23:55   ` Evan Green
2019-01-01  4:51 ` [PATCH 10/13] memory: mtk-smi: " Yong Wu
2019-02-25 23:56   ` Evan Green
2019-01-01  4:51 ` [PATCH 11/13] iommu/mediatek: Use builtin_platform_driver Yong Wu
2019-02-25 23:56   ` Evan Green
2019-02-27 14:33     ` Yong Wu
2019-03-05 19:03       ` Evan Green
2019-01-01  4:51 ` [PATCH 12/13] arm: dts: mediatek: Get rid of mediatek,larb for MM nodes Yong Wu
2019-02-25 23:56   ` Evan Green
2019-01-01  4:51 ` [PATCH 13/13] arm64: " Yong Wu
2019-02-25 23:56   ` Evan Green

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