linux-kernel - [06/42] offb: Fix bug in calculating requested vram size

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Date:	Tue, 10 Jan 2012 13:48:16 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [06/42] offb: Fix bug in calculating requested vram size

3.1-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Benjamin Herrenschmidt <benh@...nel.crashing.org>

commit c055fe0797b7bd8f6f21a13598a55a16d5c13ae7 upstream.

We used to try to request 8 times more vram than needed, which would
fail if the card has a too small BAR (observed with qemu & kvm).

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/video/offb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/video/offb.c
+++ b/drivers/video/offb.c
@@ -377,7 +377,7 @@ static void __init offb_init_fb(const ch
 				int pitch, unsigned long address,
 				int foreign_endian, struct device_node *dp)
 {
-	unsigned long res_size = pitch * height * (depth + 7) / 8;
+	unsigned long res_size = pitch * height;
 	struct offb_par *par = &default_par;
 	unsigned long res_start = address;
 	struct fb_fix_screeninfo *fix;


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