I2C: OMAP: fix FIFO usage for OMAP4

Currently the fifo depth is set to zero for OMAP4 which disables
the FIFO usage. This patch enables the FIFO usage for I2C transactions
on OMAP4 also.

Tested on omap4430 and 3430.

Tested-and-Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c
index a43d0023446a..fa23faa20f0e 100644
--- a/drivers/i2c/busses/i2c-omap.c
+++ b/drivers/i2c/busses/i2c-omap.c
@@ -1047,13 +1047,14 @@ omap_i2c_probe(struct platform_device *pdev)
                  * size. This is to ensure that we can handle the status on int
                  * call back latencies.
                  */
-                if (dev->rev >= OMAP_I2C_REV_ON_3530_4430) {
-                        dev->fifo_size = 0;
+
+                dev->fifo_size = (dev->fifo_size / 2);
+
+                if (dev->rev >= OMAP_I2C_REV_ON_3530_4430)
                         dev->b_hw = 0; /* Disable hardware fixes */
-                } else {
-                        dev->fifo_size = (dev->fifo_size / 2);
+                else
                         dev->b_hw = 1; /* Enable hardware fixes */
-                }
+
                 /* calculate wakeup latency constraint for MPU */
                 if (dev->set_mpu_wkup_lat != NULL)
                         dev->latency = (1000000 * dev->fifo_size) /