linux-kernel - [PATCH v5 1/5] drm/dsi: check for CONFIG_OF when defining of_mipi_dsi_device

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Message-Id: <1455268714-28755-2-git-send-email-architt@codeaurora.org>
Date:	Fri, 12 Feb 2016 14:48:30 +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 1/5] drm/dsi: check for CONFIG_OF when defining of_mipi_dsi_device_add

of_mipi_dsi_device_add is used only when CONFIG_OF is enabled. It
currently works if OF support is disabled, but this will change
when we add more functionality to it.

Define the original func if CONFIG_OF is enabled. Define a dummy func
otherwise.

Signed-off-by: Archit Taneja <architt@...eaurora.org>
---
 drivers/gpu/drm/drm_mipi_dsi.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c
index 6e6a9c5..4f2a704 100644
--- a/drivers/gpu/drm/drm_mipi_dsi.c
+++ b/drivers/gpu/drm/drm_mipi_dsi.c
@@ -129,6 +129,7 @@ static int mipi_dsi_device_add(struct mipi_dsi_device *dsi)
 	return device_add(&dsi->dev);
 }
 
+#if IS_ENABLED(CONFIG_OF)
 static struct mipi_dsi_device *
 of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node)
 {
@@ -170,6 +171,13 @@ of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node)
 
 	return dsi;
 }
+#else
+static struct mipi_dsi_device *
+of_mipi_dsi_device_add(struct mipi_dsi_host *host, struct device_node *node)
+{
+	return ERR_PTR(-ENODEV);
+}
+#endif
 
 int mipi_dsi_host_register(struct mipi_dsi_host *host)
 {
-- 
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