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[Qemu-devel] [PATCH 03/10] xhci: fix numintrs sanity checks
From: |
Gerd Hoffmann |
Subject: |
[Qemu-devel] [PATCH 03/10] xhci: fix numintrs sanity checks |
Date: |
Wed, 3 Apr 2013 11:43:33 +0200 |
Make sure numintrs is a power of two, msi requires this.
https://bugzilla.redhat.com/show_bug.cgi?id=918035
Signed-off-by: Gerd Hoffmann <address@hidden>
---
hw/usb/hcd-xhci.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c
index 5aa342b..9d06c51 100644
--- a/hw/usb/hcd-xhci.c
+++ b/hw/usb/hcd-xhci.c
@@ -3290,6 +3290,9 @@ static int usb_xhci_initfn(struct PCIDevice *dev)
if (xhci->numintrs > MAXINTRS) {
xhci->numintrs = MAXINTRS;
}
+ while (xhci->numintrs & (xhci->numintrs - 1)) { /* ! power of 2 */
+ xhci->numintrs++;
+ }
if (xhci->numintrs < 1) {
xhci->numintrs = 1;
}
--
1.7.9.7
- [Qemu-devel] [PULL 00/10] usb patch queue, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 04/10] xhci: remove leftover debug printf, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 06/10] xhci: zap unused name field, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 01/10] usb-redir: Fix crash on migration with no client connected, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 07/10] usb-hub: limit chain length, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 02/10] usb-redir: Add flow control support, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 08/10] usb-hub: report status changes only once, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 09/10] usb: update docs for bus name change, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 03/10] xhci: fix numintrs sanity checks,
Gerd Hoffmann <=
- [Qemu-devel] [PATCH 05/10] xhci: remove unimplemented printfs, Gerd Hoffmann, 2013/04/03
- [Qemu-devel] [PATCH 10/10] usb-tablet: Don't claim wakeup capability for USB-2 version, Gerd Hoffmann, 2013/04/03