[9610] bts: change bts code for kernel 4.14

Change-Id: Iaf6eac1f483b82aa266167170194f055000d86c4
Signed-off-by: Taekki Kim <taekki.kim@samsung.com>

diff --git a/drivers/bts/bts-exynos9610.c b/drivers/bts/bts-exynos9610.c
index 61d2fc748379904a43047622c7a6d12972d2a377..92d2879c5ae40b5dfe1576fcd0a37bbcbe4f9bae 100644 (file)
--- a/drivers/bts/bts-exynos9610.c
+++ b/drivers/bts/bts-exynos9610.c
@@ -1545,16 +1545,17 @@ static ssize_t exynos_dmc_timeout_write(struct file *file, const char __user *us
        unsigned int timeout;
        int nr_drex = ARRAY_SIZE(exynos_drex) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %x\n", &drex_ip, &scen, &qos, &timeout);
        if (ret != 4) {
@@ -1627,16 +1628,17 @@ static ssize_t exynos_mo_write(struct file *file, const char __user *user_buf,
        int ip, scen, rw, mo, ret;
        int nr_ip = ARRAY_SIZE(exynos_bts) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %d\n", &ip, &scen, &rw, &mo);
        if (ret != 4) {
@@ -1712,16 +1714,17 @@ static ssize_t exynos_max_mo_write(struct file *file, const char __user *user_bu
        int ip, scen, rw, mo, ret;
        int nr_ip = ARRAY_SIZE(exynos_bts) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %d\n", &ip, &scen, &rw, &mo);
        if (ret != 4) {
@@ -1797,16 +1800,17 @@ static ssize_t exynos_full_mo_write(struct file *file, const char __user *user_b
        int ip, scen, rw, mo, ret;
        int nr_ip = ARRAY_SIZE(exynos_bts) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %d\n", &ip, &scen, &rw, &mo);
        if (ret != 4) {
@@ -1880,16 +1884,17 @@ static ssize_t exynos_prio_write(struct file *file, const char __user *user_buf,
        int ip, scen, prio, ret;
        int nr_ip = ARRAY_SIZE(exynos_bts) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d\n", &ip, &scen, &prio);
        if (ret != 3) {
@@ -1943,16 +1948,17 @@ static ssize_t exynos_scen_write(struct file *file, const char __user *user_buf,
        char *buf;
        int ret;
        u32 scen, on;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%u %u", &scen, &on);
        if (ret != 2) {
@@ -2015,16 +2021,17 @@ static ssize_t exynos_qmax_write(struct file *file, const char __user *user_buf,
        char *buf;
        unsigned int r0, r1, w0, w1;
        int i, ret;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%u %u %u %u\n", &r0, &r1, &w0, &w1);
        if (ret != 4) {
@@ -2092,16 +2099,17 @@ static ssize_t exynos_timeout_write(struct file *file, const char __user *user_b
        int ip, scen, rw, timeout, ret;
        int nr_ip = ARRAY_SIZE(exynos_bts) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %d\n", &ip, &scen, &rw, &timeout);
        if (ret != 4) {
@@ -2176,16 +2184,17 @@ static ssize_t exynos_timeout_en_write(struct file *file, const char __user *use
        int ip, scen, timeout_en, ret;
        int nr_ip = ARRAY_SIZE(exynos_bts) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d\n", &ip, &scen, &timeout_en);
        if (ret != 3) {
@@ -2260,16 +2269,17 @@ static ssize_t exynos_write_flush_write(struct file *file, const char __user *us
        unsigned int config;
        int nr_drex = ARRAY_SIZE(exynos_drex) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %x\n", &drex_ip, &scen, &set, &config);
        if (ret != 4) {
@@ -2348,16 +2358,17 @@ static ssize_t exynos_vc_timer_th_write(struct file *file, const char __user *us
        unsigned int threshold;
        int nr_drex = ARRAY_SIZE(exynos_drex) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %x\n", &drex_ip, &scen, &qos, &threshold);
        if (ret != 4) {
@@ -2441,16 +2452,17 @@ static ssize_t exynos_cutoff_con_write(struct file *file, const char __user *use
        unsigned int control;
        int nr_drex = ARRAY_SIZE(exynos_drex) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %x\n", &drex_ip, &scen, &control);
        if (ret != 3) {
@@ -2523,16 +2535,17 @@ static ssize_t exynos_brb_cutoff_write(struct file *file, const char __user *use
        unsigned int config;
        int nr_drex = ARRAY_SIZE(exynos_drex) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %x\n", &drex_ip, &scen, &config);
        if (ret != 3) {
@@ -2605,16 +2618,17 @@ static ssize_t exynos_rdbuf_cutoff_write(struct file *file, const char __user *u
        unsigned int config;
        int nr_drex = ARRAY_SIZE(exynos_drex) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %x\n", &drex_ip, &scen, &config);
        if (ret != 3) {
@@ -2687,16 +2701,17 @@ static ssize_t exynos_rreq_thrt_con_write(struct file *file, const char __user *
        unsigned int control;
        int nr_drex_pf = ARRAY_SIZE(exynos_drex_pf) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %x\n", &drex_pf_ip, &scen, &control);
        if (ret != 3) {
@@ -2769,16 +2784,17 @@ static ssize_t exynos_allow_mo_region_write(struct file *file, const char __user
        unsigned int config;
        int nr_drex_pf = ARRAY_SIZE(exynos_drex_pf) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %x\n", &drex_pf_ip, &scen, &config);
        if (ret != 3) {
@@ -2857,16 +2873,17 @@ static ssize_t exynos_pf_qos_timer_write(struct file *file, const char __user *u
        unsigned int timeout;
        int nr_drex_pf = ARRAY_SIZE(exynos_drex_pf) - 1;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d %d %x\n", &drex_pf_ip, &scen, &qos, &timeout);
        if (ret != 4) {
@@ -2924,16 +2941,17 @@ static ssize_t exynos_bts_scen_test_write(struct file *file, const char __user *
        char *buf;
        int scen, control, ret;
        int nr_scen = ARRAY_SIZE(bts_scen) - 1;
+       ssize_t len;
 
        buf = kmalloc(count, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;
 
-       ret = copy_from_user(buf, user_buf, count);
-       if (ret < 0)
-               goto out;
+       len = simple_write_to_buffer(buf, sizeof(buf) - 1, ppos, user_buf, count);
+       if (len < 0)
+               return len;
 
-       buf[count] = '\0';
+       buf[len] = '\0';
 
        ret = sscanf(buf, "%d %d\n", &scen, &control);
        if (ret != 2) {