linux-kernel - [PATCH 5.3 047/112] staging/fbtft: Depend on OF

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Message-Id: <20191016214855.113292089@linuxfoundation.org>
Date:   Wed, 16 Oct 2019 14:50:39 -0700
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Noralf Trønnes <noralf@...nnes.org>
Subject: [PATCH 5.3 047/112] staging/fbtft: Depend on OF

From: Noralf Trønnes <noralf@...nnes.org>

commit 63f2b1677fba11c5bd02089f25c13421948905f5 upstream.

Commit c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor
interface") removed setting gpios via platform data. This means that
fbtft will now only work with Device Tree so set the dependency.

This also prevents a NULL pointer deref on non-DT platform because
fbtftops.request_gpios is not set in that case anymore.

Fixes: c440eee1a7a1 ("Staging: fbtft: Switch to the gpio descriptor interface")
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Noralf Trønnes <noralf@...nnes.org>
Link: https://lore.kernel.org/r/20190917171843.10334-1-noralf@tronnes.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/staging/fbtft/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/staging/fbtft/Kconfig
+++ b/drivers/staging/fbtft/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 menuconfig FB_TFT
 	tristate "Support for small TFT LCD display modules"
-	depends on FB && SPI
+	depends on FB && SPI && OF
 	depends on GPIOLIB || COMPILE_TEST
 	select FB_SYS_FILLRECT
 	select FB_SYS_COPYAREA