Remove erroneous spi_master_put() after controller deregistration which
would access the already freed spi controller.
Note that spi_unregister_master() drops our only controller reference.
Fixes: ba3e67001b42 ("greybus: SPI: convert to a gpbridge driver")
Cc: stable <stable@xxxxxxxxxxxxxxx> # 4.9
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
---
drivers/staging/greybus/spilib.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/staging/greybus/spilib.c b/drivers/staging/greybus/spilib.c
index e97b19148497..1e7321a1404c 100644
--- a/drivers/staging/greybus/spilib.c
+++ b/drivers/staging/greybus/spilib.c
@@ -544,11 +544,14 @@ int gb_spilib_master_init(struct gb_connection *connection, struct device *dev,
return 0;
-exit_spi_unregister:
- spi_unregister_master(master);
exit_spi_put:
spi_master_put(master);
+ return ret;
+
+exit_spi_unregister:
+ spi_unregister_master(master);
+
return ret;
}
EXPORT_SYMBOL_GPL(gb_spilib_master_init);
@@ -558,7 +561,6 @@ void gb_spilib_master_exit(struct gb_connection *connection)
struct spi_master *master = gb_connection_get_data(connection);
spi_unregister_master(master);
- spi_master_put(master);
}
EXPORT_SYMBOL_GPL(gb_spilib_master_exit);
--
2.14.3
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