[PATCH fbdev] Fix shadow fb allocation size

[Adam Jackson]

->bitsPerPixel is rather obviously eight times too large.

Signed-off-by: Adam Jackson <ajax at redhat.com>
---
 src/fbdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/fbdev.c b/src/fbdev.c
index 2c658fe..dbc09bf 100644
--- a/src/fbdev.c
+++ b/src/fbdev.c
@@ -828,7 +828,7 @@ FBDevScreenInit(SCREEN_INIT_ARGS_DECL)
 
 	if (fPtr->shadowFB) {
 	    fPtr->shadow = calloc(1, pScrn->virtualX * pScrn->virtualY *
-				  pScrn->bitsPerPixel);
+				  ((pScrn->bitsPerPixel + 7) / 8));
 
 	    if (!fPtr->shadow) {
 		xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
-- 
2.9.3