[PATCH] spi: spidev: Fix for reverting spi max speed value only on failure

[Vivek Pernamitta]

When user space application request for change in spi clock
using ioctl, current value is taken back-up and new value is
assigned to spi->max_speed_hz, then spi_setup() function is
called with new value. If spi_setup() function fails, it needs
reverting to old spi_max_speed value only in failure condition.

Signed-off-by: Vivek Pernamitta <pervi...@gmail.com>
---
 drivers/spi/spidev.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c
index 30498cf25f3b..70382b642f37 100644
--- a/drivers/spi/spidev.c
+++ b/drivers/spi/spidev.c
@@ -458,9 +458,10 @@ spidev_ioctl(struct file *filp, unsigned int cmd, unsigned 
long arg)
                        retval = spi_setup(spi);
                        if (retval >= 0)
                                spidev->speed_hz = tmp;
-                       else
+                       else {
                                dev_dbg(&spi->dev, "%d Hz (max)\n", tmp);
-                       spi->max_speed_hz = save;
+                               spi->max_speed_hz = save;
+                       }
                }
                break;
 
-- 
2.17.1