[src/trunk]: src/sys/external/bsd/drm2/include/linux Disable MSI on DRMKMS (a...

[maya <maya%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/ac800c4e4134
branches:  trunk
changeset: 356092:ac800c4e4134
user:      maya <maya%NetBSD.org@localhost>
date:      Thu Aug 31 23:47:50 2017 +0000

description:
Disable MSI on DRMKMS (again).

It is causing problems on some older nvidia graphics cards:
http://mail-index.netbsd.org/netbsd-users/2017/08/02/msg020026.html
http://mail-index.netbsd.org/pkgsrc-users/2017/08/26/msg025492.html
PR kern/52440

diffstat:

 sys/external/bsd/drm2/include/linux/pci.h |  6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diffs (27 lines):

diff -r 37c73b3b8ec7 -r ac800c4e4134 sys/external/bsd/drm2/include/linux/pci.h
--- a/sys/external/bsd/drm2/include/linux/pci.h Thu Aug 31 22:19:51 2017 +0000
+++ b/sys/external/bsd/drm2/include/linux/pci.h Thu Aug 31 23:47:50 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pci.h,v 1.23 2017/03/02 04:31:51 nonaka Exp $  */
+/*     $NetBSD: pci.h,v 1.24 2017/08/31 23:47:50 maya Exp $    */
 
 /*-
  * Copyright (c) 2013 The NetBSD Foundation, Inc.
@@ -293,6 +293,7 @@
 static inline int
 pci_enable_msi(struct pci_dev *pdev)
 {
+#ifdef notyet
        const struct pci_attach_args *const pa = &pdev->pd_pa;
 
        if (pci_msi_alloc_exact(pa, &pdev->intr_handles, 1))
@@ -300,6 +301,9 @@
 
        pdev->msi_enabled = 1;
        return 0;
+#else
+       return -ENOSYS;
+#endif
 }
 
 static inline void