diff options
Diffstat (limited to 'drivers/platform/msm/sps/sps.c')
| -rw-r--r-- | drivers/platform/msm/sps/sps.c | 15 |
1 files changed, 1 insertions, 14 deletions
diff --git a/drivers/platform/msm/sps/sps.c b/drivers/platform/msm/sps/sps.c index be4a757d61b4..fdcc1ea6dc51 100644 --- a/drivers/platform/msm/sps/sps.c +++ b/drivers/platform/msm/sps/sps.c @@ -1,4 +1,4 @@ -/* Copyright (c) 2011-2017, The Linux Foundation. All rights reserved. +/* Copyright (c) 2011-2013, The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -98,7 +98,6 @@ static char *debugfs_buf; static u32 debugfs_buf_size; static u32 debugfs_buf_used; static int wraparound; -static struct mutex sps_debugfs_lock; struct dentry *dent; struct dentry *dfile_info; @@ -116,7 +115,6 @@ static struct sps_bam *phy2bam(phys_addr_t phys_addr); /* record debug info for debugfs */ void sps_debugfs_record(const char *msg) { - mutex_lock(&sps_debugfs_lock); if (debugfs_record_enabled) { if (debugfs_buf_used + MAX_MSG_LEN >= debugfs_buf_size) { debugfs_buf_used = 0; @@ -130,7 +128,6 @@ void sps_debugfs_record(const char *msg) debugfs_buf_size - debugfs_buf_used, "\n**** end line of sps log ****\n\n"); } - mutex_unlock(&sps_debugfs_lock); } /* read the recorded debug info to userspace */ @@ -140,7 +137,6 @@ static ssize_t sps_read_info(struct file *file, char __user *ubuf, int ret = 0; int size; - mutex_lock(&sps_debugfs_lock); if (debugfs_record_enabled) { if (wraparound) size = debugfs_buf_size - MAX_MSG_LEN; @@ -150,7 +146,6 @@ static ssize_t sps_read_info(struct file *file, char __user *ubuf, ret = simple_read_from_buffer(ubuf, count, ppos, debugfs_buf, size); } - mutex_unlock(&sps_debugfs_lock); return ret; } @@ -195,13 +190,11 @@ static ssize_t sps_set_info(struct file *file, const char __user *buf, new_buf_size = buf_size_kb * SZ_1K; - mutex_lock(&sps_debugfs_lock); if (debugfs_record_enabled) { if (debugfs_buf_size == new_buf_size) { /* need do nothing */ pr_info("sps:debugfs: input buffer size " "is the same as before.\n"); - mutex_unlock(&sps_debugfs_lock); return count; } else { /* release the current buffer */ @@ -221,14 +214,12 @@ static ssize_t sps_set_info(struct file *file, const char __user *buf, if (!debugfs_buf) { debugfs_buf_size = 0; pr_err("sps:fail to allocate memory for debug_fs.\n"); - mutex_unlock(&sps_debugfs_lock); return -ENOMEM; } debugfs_buf_used = 0; wraparound = false; debugfs_record_enabled = true; - mutex_unlock(&sps_debugfs_lock); return count; } @@ -276,7 +267,6 @@ static ssize_t sps_set_logging_option(struct file *file, const char __user *buf, return count; } - mutex_lock(&sps_debugfs_lock); if (((option == 0) || (option == 2)) && ((logging_option == 1) || (logging_option == 3))) { debugfs_record_enabled = false; @@ -288,7 +278,6 @@ static ssize_t sps_set_logging_option(struct file *file, const char __user *buf, } logging_option = option; - mutex_unlock(&sps_debugfs_lock); return count; } @@ -615,8 +604,6 @@ static void sps_debugfs_init(void) goto bam_addr_err; } - mutex_init(&sps_debugfs_lock); - return; bam_addr_err: |