Merge "trace: convert to debugfs_file_get() and -put()" (35637d0f) · Commits · e / devices / android_kernel_oneplus_sm7250

kernel/trace/ipc_logging_debug.c

+10 −8

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0
		/*
		* Copyright (c) 2012-2015, 2017, The Linux Foundation. All rights reserved.
		* Copyright (c) 2012-2015, 2017-2018, The Linux Foundation. All rights reserved.
		*/

		#include <linux/slab.h>
		@@ -70,17 +70,18 @@ static ssize_t debug_read_helper(struct file file, char __user buff,
		struct dentry *d = file->f_path.dentry;
		char *buffer;
		int bsize;
		int srcu_idx;
		int r;

		r = debugfs_use_file_start(d, &srcu_idx);
		if (!r) {
		r = debugfs_file_get(d);
		if (r)
		return r;

		ilctxt = file->private_data;
		r = kref_get_unless_zero(&ilctxt->refcount) ? 0 : -EIO;
		}
		debugfs_use_file_finish(srcu_idx);
		if (r)
		if (r) {
		debugfs_file_put(d);
		return r;
		}

		buffer = kmalloc(count, GFP_KERNEL);
		if (!buffer) {
		@@ -102,6 +103,7 @@ static ssize_t debug_read_helper(struct file file, char __user buff,

		done:
		ipc_log_context_put(ilctxt);
		debugfs_file_put(d);
		return bsize;
		}