drivers/video/ssd1307fb.c: fix bit order bug in the byte translation function

This was leading to a strange behaviour when using the fbcon driver on
top of this one: the letters were in the right order, but each letter
had a vertical symmetry.

This was because the addressing was right for the byte, but the
addressing of each individual bit was inverted.

Signed-off-by: Maxime Ripard <[email protected]>
Cc: Brian Lilly <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Florian Tobias Schandinat <[email protected]>
Cc: Thomas Petazzoni <[email protected]>
Cc: Tomi Valkeinen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Author: mripard

drivers/video/ssd1307fb.c

@@ -145,8 +145,8 @@ static void ssd1307fb_update_display(struct ssd1307fb_par *par)
 				u32 page_length = SSD1307FB_WIDTH * i;
 				u32 index = page_length + (SSD1307FB_WIDTH * k + j) / 8;
 				u8 byte = *(vmem + index);
-				u8 bit = byte & (1 << (7 - (j % 8)));
-				bit = bit >> (7 - (j % 8));
+				u8 bit = byte & (1 << (j % 8));
+				bit = bit >> (j % 8);
 				buf |= bit << k;
 			}
 			ssd1307fb_write_data(par->client, buf);