Mesa (master): intel: aubinator_error_decode: fix segfault on missing register

[Lionel Landwerlin]

Module: Mesa
Branch: master
Commit: fca9f5b5851d2eeba6d030e28dd783017fef55cf
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=fca9f5b5851d2eeba6d030e28dd783017fef55cf

Author: Lionel Landwerlin <lionel.g.landwer...@intel.com>
Date:   Thu Feb 22 13:41:10 2018 +0000

intel: aubinator_error_decode: fix segfault on missing register

Some register might be missing in our genxmls. Don't try to decode
them.

Signed-off-by: Lionel Landwerlin <lionel.g.landwer...@intel.com>
Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>

---

 src/intel/tools/aubinator_error_decode.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/intel/tools/aubinator_error_decode.c 
b/src/intel/tools/aubinator_error_decode.c
index 2331114b44..017be5bbc2 100644
--- a/src/intel/tools/aubinator_error_decode.c
+++ b/src/intel/tools/aubinator_error_decode.c
@@ -65,7 +65,8 @@ print_head(unsigned int reg)
 static void
 print_register(struct gen_spec *spec, const char *name, uint32_t reg)
 {
-   struct gen_group *reg_spec = gen_spec_find_register_by_name(spec, name);
+   struct gen_group *reg_spec =
+      name ? gen_spec_find_register_by_name(spec, name) : NULL;
 
    if (reg_spec) {
       gen_print_group(stdout, reg_spec, 0, &reg, 0,

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