/* * File: sysctl.c * * Phonet /proc/sys/net/phonet interface implementation * * Copyright (C) 2008 Nokia Corporation. * * Author: Rémi Denis-Courmont * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA */ #include #include #include #include #include #include #include #define DYNAMIC_PORT_MIN 0x40 #define DYNAMIC_PORT_MAX 0x7f static DEFINE_SEQLOCK(local_port_range_lock); static int local_port_range_min[2] = {0, 0}; static int local_port_range_max[2] = {1023, 1023}; static int local_port_range[2] = {DYNAMIC_PORT_MIN, DYNAMIC_PORT_MAX}; static struct ctl_table_header *phonet_table_hrd; static void set_local_port_range(int range[2]) { write_seqlock(&local_port_range_lock); local_port_range[0] = range[0]; local_port_range[1] = range[1]; write_sequnlock(&local_port_range_lock); } void phonet_get_local_port_range(int *min, int *max) { unsigned int seq; do { seq = read_seqbegin(&local_port_range_lock); if (min) *min = local_port_range[0]; if (max) *max = local_port_range[1]; } while (read_seqretry(&local_port_range_lock, seq)); } static int proc_local_port_range(struct ctl_table *table, int write, void __user *buffer, size_t *lenp, loff_t *ppos) { int ret; int range[2] = {local_port_range[0], local_port_range[1]}; struct ctl_table tmp = { .data = &range, .maxlen = sizeof(range), .mode = table->mode, .extra1 = &local_port_range_min, .extra2 = &local_port_range_max, }; ret = proc_dointvec_minmax(&tmp, write, buffer, lenp, ppos); if (write && ret == 0) { if (range[1] < range[0]) ret = -EINVAL; else set_local_port_range(range); } return ret; } static struct ctl_table phonet_table[] = { { .procname = "local_port_range", .data = &local_port_range, .maxlen = sizeof(local_port_range), .mode = 0644, .proc_handler = proc_local_port_range, }, { } }; int __init phonet_sysctl_init(void) { phonet_table_hrd = register_net_sysctl(&init_net, "net/phonet", phonet_table); return phonet_table_hrd == NULL ? -ENOMEM : 0; } void phonet_sysctl_exit(void) { unregister_net_sysctl_table(phonet_table_hrd); } 7d54e0a82d8032'>root/drivers/thermal/rockchip_thermal.c
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authorCaesar Wang <wxt@rock-chips.com>2016-12-12 19:05:33 +0800
committerEduardo Valentin <edubezval@gmail.com>2016-12-13 20:32:03 -0800
commitd3530497f5c33530c50acb435b7d54e0a82d8032 (patch)
treef3729d4381986fcfd3fd14528f780e105fb7d4cc /drivers/thermal/rockchip_thermal.c
parentcdd8b3f7b779e39bda1a8057f287da065216720b (diff)
thermal: rockchip: fixes invalid temperature case
The temp_to_code function will return 0 when we set the temperature to a invalid value (e.g. 61C, 62C, 63C....), that's unpractical. This patch will prevent this case happening. That will return the max analog value to indicate the temperature is invalid or over table temperature range. Signed-off-by: Caesar Wang <wxt@rock-chips.com> Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal/rockchip_thermal.c')
-rw-r--r--drivers/thermal/rockchip_thermal.c48
1 files changed, 28 insertions, 20 deletions
diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c