diff options
| author | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-11 13:22:48 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2019-07-12 19:16:01 +0100 |
| commit | bb4d55a02dd3e1971f2c091a13b6bd7f0b496e40 (patch) | |
| tree | d86eb581e05684afa9dfd0f3c07ea7939e7b5d01 /tools | |
| parent | 549e1cdc064c0491a9c4509f42d826ae0e752a07 (diff) | |
intel_l3_parity: Restore support for Ivybridge
With the fancy second slice of Haswell, we lost support for Ivybridge
with its paltry single slice.
Fixes: 8ddcfd6882a9 ("intel_l3_parity: slice support")
Testcase: igt/tools_test/sysfs_l3_parity
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/intel_l3_parity.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/intel_l3_parity.c b/tools/intel_l3_parity.c index d8c997af..4179c5ae 100644 --- a/tools/intel_l3_parity.c +++ b/tools/intel_l3_parity.c @@ -195,6 +195,12 @@ int main(int argc, char *argv[]) for_each_slice(i) { fd[i] = openat(dir, path[i], O_RDWR); + if (fd[i] < 0) { + if (i == 0) /* at least one slice must be supported */ + exit(77); + continue; + } + if (read(fd[i], l3logs[i], NUM_REGS * sizeof(uint32_t)) < 0) { perror(path[i]); exit(77); @@ -333,6 +339,9 @@ int main(int argc, char *argv[]) /* Per slice operations */ for_each_slice(i) { + if (fd[i] < 0) + continue; + switch (action) { case 'l': dumpit(i); @@ -374,6 +383,9 @@ int main(int argc, char *argv[]) exit(EXIT_SUCCESS); for_each_slice(i) { + if (fd[i] < 0) + continue; + ret = write(fd[i], l3logs[i], NUM_REGS * sizeof(uint32_t)); if (ret == -1) { perror("Writing sysfs"); |