diff options
| author |   Gary R Hook <gary.hook@amd.com> | 2017-05-15 10:33:27 -0500 |
|---|---|---|
| committer |   Jon Mason <jdmason@kudzu.us> | 2017-07-06 11:30:08 -0400 |
| commit | 32e0f5bfa5aa2a74264160e0990df3af125ca6e2 (patch) | |
| tree | 94bbf1cfd38e879fc45fbcadac3f637164804492 /drivers/ntb | |
| parent | ntb: Add more debugfs support for ntb_perf testing options (diff) | |
| download | linux-dev-32e0f5bfa5aa2a74264160e0990df3af125ca6e2.tar.xz linux-dev-32e0f5bfa5aa2a74264160e0990df3af125ca6e2.zip | |
ntb: Add error path/handling to Debug FS entry creation
If a failure occurs when creating Debug FS entries, unroll all of
the work that's been done.
Signed-off-by: Gary R Hook <gary.hook@amd.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb')
| -rw-r--r-- | drivers/ntb/test/ntb_perf.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c index 6fdddf86269e..759f772fa00c 100644 --- a/drivers/ntb/test/ntb_perf.c +++ b/drivers/ntb/test/ntb_perf.c @@ -745,6 +745,7 @@ static int perf_debugfs_setup(struct perf_ctx *perf) if (!debugfs_initialized()) return -ENODEV; + /* Assumpion: only one NTB device in the system */ if (!perf_debugfs_dir) { perf_debugfs_dir = debugfs_create_dir(KBUILD_MODNAME, NULL); if (!perf_debugfs_dir) @@ -754,45 +755,50 @@ static int perf_debugfs_setup(struct perf_ctx *perf) debugfs_node_dir = debugfs_create_dir(pci_name(pdev), perf_debugfs_dir); if (!debugfs_node_dir) - return -ENODEV; + goto err; debugfs_run = debugfs_create_file("run", S_IRUSR | S_IWUSR, debugfs_node_dir, perf, &ntb_perf_debugfs_run); if (!debugfs_run) - return -ENODEV; + goto err; debugfs_threads = debugfs_create_u8("threads", S_IRUSR | S_IWUSR, debugfs_node_dir, &perf->perf_threads); if (!debugfs_threads) - return -ENODEV; + goto err; debugfs_seg_order = debugfs_create_u32("seg_order", 0600, debugfs_node_dir, &seg_order); if (!debugfs_seg_order) - return -ENODEV; + goto err; debugfs_run_order = debugfs_create_u32("run_order", 0600, debugfs_node_dir, &run_order); if (!debugfs_run_order) - return -ENODEV; + goto err; debugfs_use_dma = debugfs_create_bool("use_dma", 0600, debugfs_node_dir, &use_dma); if (!debugfs_use_dma) - return -ENODEV; + goto err; debugfs_on_node = debugfs_create_bool("on_node", 0600, debugfs_node_dir, &on_node); if (!debugfs_on_node) - return -ENODEV; + goto err; return 0; + +err: + debugfs_remove_recursive(perf_debugfs_dir); + perf_debugfs_dir = NULL; + return -ENODEV; } static int perf_probe(struct ntb_client *client, struct ntb_dev *ntb) |