ENGR00215592 - EPDC fb: Fix bug in selecting next LUT when 0-31 busy

If LUT 63 is busy and LUTs 0-31 are busy, the epdc_choose_next_lut
function was not correctly selecting an available LUT between 32-62.
Instead, it was returning 0.  This fixes that issue by properly
offsetting the available LUT from the second 32-bit segment of the
64-bit LUT field.

Signed-off-by: Danny Nold <dannynold@freescale.com>

diff --git a/drivers/video/mxc/mxc_epdc_fb.c b/drivers/video/mxc/mxc_epdc_fb.c
index ef4916db0436e9607cbec26919446af232e586fb..730fba6961c37754de87623ae7e7e8a75aa6560f 100644 (file)
--- a/drivers/video/mxc/mxc_epdc_fb.c
+++ b/drivers/video/mxc/mxc_epdc_fb.c
@@ -753,7 +753,7 @@ static int epdc_choose_next_lut(int rev, int *next_lut)
                                *next_lut = ffz((u32)luts_status);
                                if (*next_lut == -1)
                                        *next_lut =
-                                               ffz((u32)(luts_status >> 32));
+                                               ffz((u32)(luts_status >> 32)) + 32;
                        }
                }