[Fixes: PATCH v1] spi: dw: fix kernel crash due to NULL pointer dereference

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The obvious fix after the commit d9c73bb8a3a5 "spi: dw: add support for gpio
controlled chip select". This patch fixes the issue by using locally defined
temporary variable.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v3.16+
---
 drivers/spi/spi-dw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c
index 29f3314..670f062 100644
--- a/drivers/spi/spi-dw.c
+++ b/drivers/spi/spi-dw.c
@@ -271,7 +271,7 @@ static void giveback(struct dw_spi *dws)
 					transfer_list);
 
 	if (!last_transfer->cs_change)
-		spi_chip_sel(dws, dws->cur_msg->spi, 0);
+		spi_chip_sel(dws, msg->spi, 0);
 
 	spi_finalize_current_message(dws->master);
 }
-- 
2.1.0

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