This is a note to let you know that I've just added the patch titled
staging: fbtft: Fix error path in fbtft_driver_module_init()
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
staging-fbtft-fix-error-path-in-fbtft_driver_module_.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 8b85788f54210c79ca4b2061826c5c317a61b9bf
Author: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Date: Tue Jan 18 19:13:37 2022 +0100
staging: fbtft: Fix error path in fbtft_driver_module_init()
[ 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@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20220118181338.207943-1-u.kleine-koenig@xxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/staging/fbtft/fbtft.h b/drivers/staging/fbtft/fbtft.h
index 0275319906748..a76723a4219a6 100644
--- a/drivers/staging/fbtft/fbtft.h
+++ b/drivers/staging/fbtft/fbtft.h
@@ -343,7 +343,10 @@ 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) \
