From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Sasha Levin <sashal@kernel.org>,
dri-devel@lists.freedesktop.org,
Hsin-Yi Wang <hsinyi@chromium.org>
Subject: [PATCH AUTOSEL 5.1 18/51] drm/mediatek: clear num_pipes when unbind driver
Date: Tue, 25 Jun 2019 23:40:34 -0400 [thread overview]
Message-ID: <20190626034117.23247-18-sashal@kernel.org> (raw)
In-Reply-To: <20190626034117.23247-1-sashal@kernel.org>
From: Hsin-Yi Wang <hsinyi@chromium.org>
[ Upstream commit a4cd1d2b016d5d043ab2c4b9c4ec50a5805f5396 ]
num_pipes is used for mutex created in mtk_drm_crtc_create(). If we
don't clear num_pipes count, when rebinding driver, the count will
be accumulated. From mtk_disp_mutex_get(), there can only be at most
10 mutex id. Clear this number so it starts from 0 in every rebind.
Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/mediatek/mtk_drm_drv.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
index 8718d123ccaa..bbfe3a464aea 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
@@ -400,6 +400,7 @@ static void mtk_drm_unbind(struct device *dev)
drm_dev_unregister(private->drm);
mtk_drm_kms_deinit(private->drm);
drm_dev_put(private->drm);
+ private->num_pipes = 0;
private->drm = NULL;
}
--
2.20.1
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next prev parent reply other threads:[~2019-06-26 3:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20190626034117.23247-1-sashal@kernel.org>
2019-06-26 3:40 ` [PATCH AUTOSEL 5.1 15/51] drm/mediatek: fix unbind functions Sasha Levin
2019-06-26 3:40 ` [PATCH AUTOSEL 5.1 16/51] drm/mediatek: unbind components in mtk_drm_unbind() Sasha Levin
2019-06-26 3:40 ` [PATCH AUTOSEL 5.1 17/51] drm/mediatek: call drm_atomic_helper_shutdown() when unbinding driver Sasha Levin
2019-06-26 3:40 ` Sasha Levin [this message]
2019-06-26 3:40 ` [PATCH AUTOSEL 5.1 19/51] drm/mediatek: call mtk_dsi_stop() after mtk_drm_crtc_atomic_disable() Sasha Levin
2019-06-26 3:40 ` [PATCH AUTOSEL 5.1 36/51] drm: panel-orientation-quirks: Add quirk for GPD pocket2 Sasha Levin
2019-06-26 3:40 ` [PATCH AUTOSEL 5.1 37/51] drm: panel-orientation-quirks: Add quirk for GPD MicroPC Sasha Levin
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