From 32e0f5bfa5aa2a74264160e0990df3af125ca6e2 Mon Sep 17 00:00:00 2001 From: Gary R Hook Date: Mon, 15 May 2017 10:33:27 -0500 Subject: [PATCH] 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 Acked-by: Dave Jiang Signed-off-by: Jon Mason --- drivers/ntb/test/ntb_perf.c | 20 +++++++++++++------- 1 file 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)