From: Michael Hennerich <michael.henner...@analog.com>

For the special case when fbtft_mkdirty() is called with with -1 for the y
coordinate, the height is truncated by 1.

This isn't required, and causes the last line to not update.

Signed-off-by: Michael Hennerich <michael.henner...@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardel...@analog.com>
---
 drivers/staging/fbtft/fbtft-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/fbtft/fbtft-core.c 
b/drivers/staging/fbtft/fbtft-core.c
index cf5700a2ea66..90eec45d11fc 100644
--- a/drivers/staging/fbtft/fbtft-core.c
+++ b/drivers/staging/fbtft/fbtft-core.c
@@ -317,7 +317,7 @@ static void fbtft_mkdirty(struct fb_info *info, int y, int 
height)
        /* special case, needed ? */
        if (y == -1) {
                y = 0;
-               height = info->var.yres - 1;
+               height = info->var.yres;
        }
 
        /* Mark display lines/area as dirty */
-- 
2.20.1

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