intel: Load the driver even if I915_PARAM_REVISION is not found.

This param is only available starting on kernel 4.1. Use a default
value of 0 if it is not found instead.

v2: Update commit message (Lionel)

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Mark Janes <mark.a.janes@intel.com>
Fixes: 96e1c945f2b ("i965: Move device info initialization to common
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Tested-by: Marge Bot <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3727>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3727>

diff --git a/src/intel/dev/gen_device_info.c b/src/intel/dev/gen_device_info.c
index 0649c0705ead3ce6288487c1d0976dc345c2b1fc..7a22476916bf1b26b59131f5a5ae37ca1952804d 100644 (file)
--- a/src/intel/dev/gen_device_info.c
+++ b/src/intel/dev/gen_device_info.c
@@ -1447,7 +1447,7 @@ gen_get_device_info_from_fd(int fd, struct gen_device_info *devinfo)
       return false;
 
    if (!getparam(fd, I915_PARAM_REVISION, &devinfo->revision))
-       return false;
+      devinfo->revision = 0;
 
    if (!query_topology(devinfo, fd)) {
       if (devinfo->gen >= 10) {