Merge "diag: Change IPC logging debug bit mask through debugfs" (9ee35ff7) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/char/diag/diag_debugfs.c

+42 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@
		#include <linux/slab.h>
		#include <linux/debugfs.h>
		#include <linux/atomic.h>
		#include <linux/uaccess.h>
		#include "diagchar.h"
		#include "diagfwd.h"
		#ifdef CONFIG_DIAGFWD_BRIDGE_CODE
		@@ -30,6 +31,7 @@
		#include "diagfwd_smd.h"
		#include "diagfwd_socket.h"
		#include "diag_debugfs.h"
		#include "diag_ipc_logging.h"

		#define DEBUG_BUF_SIZE 4096
		static struct dentry *diag_dbgfs_dent;
		@@ -678,6 +680,37 @@ static ssize_t diag_dbgfs_read_socketinfo(struct file file, char __user ubuf,
		return ret;
		}

		static ssize_t diag_dbgfs_write_debug(struct file fp, const char __user buf,
		size_t count, loff_t *ppos)
		{
		const int size = 10;
		unsigned char cmd[size];
		long value = 0;
		int len = 0;

		if (count < 1)
		return -EINVAL;

		len = (count < (size - 1)) ? count : size - 1;
		if (copy_from_user(cmd, buf, len))
		return -EFAULT;

		cmd[len] = 0;
		if (cmd[len-1] == '\n') {
		cmd[len-1] = 0;
		len--;
		}

		if (kstrtol(cmd, 10, &value))
		return -EINVAL;

		if (value < 0)
		return -EINVAL;

		diag_debug_mask = (uint16_t)value;
		return count;
		}

		#ifdef CONFIG_DIAGFWD_BRIDGE_CODE
		static ssize_t diag_dbgfs_read_hsicinfo(struct file file, char __user ubuf,
		size_t count, loff_t *ppos)
		@@ -926,6 +959,10 @@ const struct file_operations diag_dbgfs_power_ops = {
		.read = diag_dbgfs_read_power,
		};

		const struct file_operations diag_dbgfs_debug_ops = {
		.write = diag_dbgfs_write_debug
		};

		int diag_debugfs_init(void)
		{
		struct dentry *entry = NULL;
		@@ -974,6 +1011,11 @@ int diag_debugfs_init(void)
		if (!entry)
		goto err;

		entry = debugfs_create_file("debug", 0444, diag_dbgfs_dent, 0,
		&diag_dbgfs_debug_ops);
		if (!entry)
		goto err;

		#ifdef CONFIG_DIAGFWD_BRIDGE_CODE
		entry = debugfs_create_file("bridge", 0444, diag_dbgfs_dent, 0,
		&diag_dbgfs_bridge_ops);