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Message-Id: <20220214092453.240557164@linuxfoundation.org>
Date: Mon, 14 Feb 2022 10:26:04 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>, Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 36/71] staging: fbtft: Fix error path in fbtft_driver_module_init()
From: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
[ Upstream commit 426aca16e903b387a0b0001d62207a745c67cfd3 ]
If registering the platform driver fails, the function must not return
without undoing the spi driver registration first.
Fixes: c296d5f9957c ("staging: fbtft: core support")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Link: https://lore.kernel.org/r/20220118181338.207943-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/staging/fbtft/fbtft.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index 9b6bdb62093d7..736cd4955b733 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -332,7 +332,10 @@ static int __init fbtft_driver_module_init(void) \
ret = spi_register_driver(&fbtft_driver_spi_driver); \
if (ret < 0) \
return ret; \
- return platform_driver_register(&fbtft_driver_platform_driver); \
+ ret = platform_driver_register(&fbtft_driver_platform_driver); \
+ if (ret < 0) \
+ spi_unregister_driver(&fbtft_driver_spi_driver); \
+ return ret; \
} \
\
static void __exit fbtft_driver_module_exit(void) \
--
2.34.1
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