remoteproc: Don't bother checking the return value of debugfs_create*

DebugFS APIs are designed to return only the error pointers and not NULL
in the case of failure. So these return pointers are safe to be passed on
to the successive debugfs_create* APIs.

Therefore, let's just get rid of the checks.

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20220329154616.58902-1-manivannan.sadhasivam@linaro.org
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index c510125769b91e89fa557a7c55c1399e95470363..3c8382f66ce2ef1fe0f49a6334f2e779af393961 100644 (file)
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -684,10 +684,6 @@ static int rproc_handle_trace(struct rproc *rproc, void *ptr,
 
        /* create the debugfs entry */
        trace->tfile = rproc_create_trace_file(name, rproc, trace);
-       if (!trace->tfile) {
-               kfree(trace);
-               return -EINVAL;
-       }
 
        list_add_tail(&trace->node, &rproc->traces);
 

diff --git a/drivers/remoteproc/remoteproc_debugfs.c b/drivers/remoteproc/remoteproc_debugfs.c
index 581930483ef843c0e96b1c0fcba824c36f5952a7..b86c1d09c70c0f46a809419c989297c4d2d31e9b 100644 (file)
--- a/drivers/remoteproc/remoteproc_debugfs.c
+++ b/drivers/remoteproc/remoteproc_debugfs.c
@@ -386,16 +386,8 @@ void rproc_remove_trace_file(struct dentry *tfile)
 struct dentry *rproc_create_trace_file(const char *name, struct rproc *rproc,
                                       struct rproc_debug_trace *trace)
 {
-       struct dentry *tfile;
-
-       tfile = debugfs_create_file(name, 0400, rproc->dbg_dir, trace,
+       return debugfs_create_file(name, 0400, rproc->dbg_dir, trace,
                                    &trace_rproc_ops);
-       if (!tfile) {
-               dev_err(&rproc->dev, "failed to create debugfs trace entry\n");
-               return NULL;
-       }
-
-       return tfile;
 }
 
 void rproc_delete_debug_dir(struct rproc *rproc)
@@ -411,8 +403,6 @@ void rproc_create_debug_dir(struct rproc *rproc)
                return;
 
        rproc->dbg_dir = debugfs_create_dir(dev_name(dev), rproc_dbg);
-       if (!rproc->dbg_dir)
-               return;
 
        debugfs_create_file("name", 0400, rproc->dbg_dir,
                            rproc, &rproc_name_ops);
@@ -430,11 +420,8 @@ void rproc_create_debug_dir(struct rproc *rproc)
 
 void __init rproc_init_debugfs(void)
 {
-       if (debugfs_initialized()) {
+       if (debugfs_initialized())
                rproc_dbg = debugfs_create_dir(KBUILD_MODNAME, NULL);
-               if (!rproc_dbg)
-                       pr_err("can't create debugfs dir\n");
-       }
 }
 
 void __exit rproc_exit_debugfs(void)