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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>
This commit is contained in:
Gary R Hook 2017-05-15 10:33:27 -05:00 committed by Jon Mason
parent 8407dd6c16
commit 32e0f5bfa5
1 changed files with 13 additions and 7 deletions
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20
drivers/ntb/test/ntb_perf.c
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@ -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)