linux-kernel - [PATCH v5 4/5] drm/dsi: Add routine to unregister a DSI device

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Date:	Fri, 12 Feb 2016 14:48:33 +0530
From:	Archit Taneja <architt@...eaurora.org>
To:	dri-devel@...ts.freedesktop.org, treding@...dia.com
Cc:	linux-kernel@...r.kernel.org, a.hajda@...sung.com,
	airlied@...ux.ie, daniel@...ll.ch, l.stach@...gutronix.de,
	robh@...nel.org, linux-arm-msm@...r.kernel.org,
	jani.nikula@...ux.intel.com, Archit Taneja <architt@...eaurora.org>
Subject: [PATCH v5 4/5] drm/dsi: Add routine to unregister a DSI device

A driver calling mipi_dsi_device_register_full might want to unregister
the device once it's done. It might also require it in an error handling
path in case something didn't go right.

Create mipi_dsi_device_unregister for this purpse, use it within
mipi_dsi_remove_device_fn as it does the same thing.

Reviewed-by: Andrzej Hajda <a.hajda@...sung.com>
Signed-off-by: Archit Taneja <architt@...eaurora.org>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 12 +++++++++++-
 include/drm/drm_mipi_dsi.h     |  1 +
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 42a7aac..f2f5a6d 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -225,6 +225,16 @@ mipi_dsi_device_register_full(struct mipi_dsi_host *host,
 }
 EXPORT_SYMBOL(mipi_dsi_device_register_full);
 
+/**
+ * mipi_dsi_device_unregister - unregister MIPI DSI device
+ * @dsi: DSI peripheral device
+ */
+void mipi_dsi_device_unregister(struct mipi_dsi_device *dsi)
+{
+	device_unregister(&dsi->dev);
+}
+EXPORT_SYMBOL(mipi_dsi_device_unregister);
+
 int mipi_dsi_host_register(struct mipi_dsi_host *host)
 {
 	struct device_node *node;
@@ -244,7 +254,7 @@ static int mipi_dsi_remove_device_fn(struct device *dev, void *priv)
 {
 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(dev);
 
-	device_unregister(&dsi->dev);
+	mipi_dsi_device_unregister(dsi);
 
 	return 0;
 }
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index a914116..06e0a93 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -210,6 +210,7 @@ static inline int mipi_dsi_pixel_format_to_bpp(enum mipi_dsi_pixel_format fmt)
 struct mipi_dsi_device *
 mipi_dsi_device_register_full(struct mipi_dsi_host *host,
 			      const struct mipi_dsi_device_info *info);
+void mipi_dsi_device_unregister(struct mipi_dsi_device *dsi);
 struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np);
 int mipi_dsi_attach(struct mipi_dsi_device *dsi);
 int mipi_dsi_detach(struct mipi_dsi_device *dsi);
-- 
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