/* * Ralink RT288x/RT3xxx/MT76xx built-in hardware watchdog timer * * Copyright (C) 2011 Gabor Juhos * Copyright (C) 2013 John Crispin * * This driver was based on: drivers/watchdog/softdog.c * * 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. */ #include #include #include #include #include #include #include #include #define SYSC_RSTSTAT 0x38 #define WDT_RST_CAUSE BIT(1) #define RALINK_WDT_TIMEOUT 30 #define RALINK_WDT_PRESCALE 65536 #define TIMER_REG_TMR1LOAD 0x00 #define TIMER_REG_TMR1CTL 0x08 #define TMRSTAT_TMR1RST BIT(5) #define TMR1CTL_ENABLE BIT(7) #define TMR1CTL_MODE_SHIFT 4 #define TMR1CTL_MODE_MASK 0x3 #define TMR1CTL_MODE_FREE_RUNNING 0x0 #define TMR1CTL_MODE_PERIODIC 0x1 #define TMR1CTL_MODE_TIMEOUT 0x2 #define TMR1CTL_MODE_WDT 0x3 #define TMR1CTL_PRESCALE_MASK 0xf #define TMR1CTL_PRESCALE_65536 0xf static struct clk *rt288x_wdt_clk; static unsigned long rt288x_wdt_freq; static void __iomem *rt288x_wdt_base; static struct reset_control *rt288x_wdt_reset; static bool nowayout = WATCHDOG_NOWAYOUT; module_param(nowayout, bool, 0); MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); static inline void rt_wdt_w32(unsigned reg, u32 val) { iowrite32(val, rt288x_wdt_base + reg); } static inline u32 rt_wdt_r32(unsigned reg) { return ioread32(rt288x_wdt_base + reg); } static int rt288x_wdt_ping(struct watchdog_device *w) { rt_wdt_w32(TIMER_REG_TMR1LOAD, w->timeout * rt288x_wdt_freq); return 0; } static int rt288x_wdt_start(struct watchdog_device *w) { u32 t; t = rt_wdt_r32(TIMER_REG_TMR1CTL); t &= ~(TMR1CTL_MODE_MASK << TMR1CTL_MODE_SHIFT | TMR1CTL_PRESCALE_MASK); t |= (TMR1CTL_MODE_WDT << TMR1CTL_MODE_SHIFT | TMR1CTL_PRESCALE_65536); rt_wdt_w32(TIMER_REG_TMR1CTL, t); rt288x_wdt_ping(w); t = rt_wdt_r32(TIMER_REG_TMR1CTL); t |= TMR1CTL_ENABLE; rt_wdt_w32(TIMER_REG_TMR1CTL, t); return 0; } static int rt288x_wdt_stop(struct watchdog_device *w) { u32 t; rt288x_wdt_ping(w); t = rt_wdt_r32(TIMER_REG_TMR1CTL); t &= ~TMR1CTL_ENABLE; rt_wdt_w32(TIMER_REG_TMR1CTL, t); return 0; } static int rt288x_wdt_set_timeout(struct watchdog_device *w, unsigned int t) { w->timeout = t; rt288x_wdt_ping(w); return 0; } static int rt288x_wdt_bootcause(void) { if (rt_sysc_r32(SYSC_RSTSTAT) & WDT_RST_CAUSE) return WDIOF_CARDRESET; return 0; } static struct watchdog_info rt288x_wdt_info = { .identity = "Ralink Watchdog", .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE, }; static struct watchdog_ops rt288x_wdt_ops = { .owner = THIS_MODULE, .start = rt288x_wdt_start, .stop = rt288x_wdt_stop, .ping = rt288x_wdt_ping, .set_timeout = rt288x_wdt_set_timeout, }; static struct watchdog_device rt288x_wdt_dev = { .info = &rt288x_wdt_info, .ops = &rt288x_wdt_ops, .min_timeout = 1, }; static int rt288x_wdt_probe(struct platform_device *pdev) { struct resource *res; int ret; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); rt288x_wdt_base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(rt288x_wdt_base)) return PTR_ERR(rt288x_wdt_base); rt288x_wdt_clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(rt288x_wdt_clk)) return PTR_ERR(rt288x_wdt_clk); rt288x_wdt_reset = devm_reset_control_get(&pdev->dev, NULL); if (!IS_ERR(rt288x_wdt_reset)) reset_control_deassert(rt288x_wdt_reset); rt288x_wdt_freq = clk_get_rate(rt288x_wdt_clk) / RALINK_WDT_PRESCALE; rt288x_wdt_dev.bootstatus = rt288x_wdt_bootcause(); rt288x_wdt_dev.max_timeout = (0xfffful / rt288x_wdt_freq); rt288x_wdt_dev.parent = &pdev->dev; watchdog_init_timeout(&rt288x_wdt_dev, rt288x_wdt_dev.max_timeout, &pdev->dev); watchdog_set_nowayout(&rt288x_wdt_dev, nowayout); ret = watchdog_register_device(&rt288x_wdt_dev); if (!ret) dev_info(&pdev->dev, "Initialized\n"); return 0; } static int rt288x_wdt_remove(struct platform_device *pdev) { watchdog_unregister_device(&rt288x_wdt_dev); return 0; } static void rt288x_wdt_shutdown(struct platform_device *pdev) { rt288x_wdt_stop(&rt288x_wdt_dev); } static const struct of_device_id rt288x_wdt_match[] = { { .compatible = "ralink,rt2880-wdt" }, {}, }; MODULE_DEVICE_TABLE(of, rt288x_wdt_match); static struct platform_driver rt288x_wdt_driver = { .probe = rt288x_wdt_probe, .remove = rt288x_wdt_remove, .shutdown = rt288x_wdt_shutdown, .driver = { .name = KBUILD_MODNAME, .of_match_table = rt288x_wdt_match, }, }; module_platform_driver(rt288x_wdt_driver); MODULE_DESCRIPTION("MediaTek/Ralink RT288x/RT3xxx hardware watchdog driver"); MODULE_AUTHOR("Gabor Juhos 2017-01-24 15:29:24 -0500 commitc929ea0b910355e1876c64431f3d5802f95b3d75 (patch) tree94339f18c2be5b9308b9f44ac8b450fe58bcc645 /include/dt-bindings/reset/mt2701-resets.h parenta430607b2ef7c3be090f88c71cfcb1b3988aa7c0 (diff)
SUNRPC: cleanup ida information when removing sunrpc module
After removing sunrpc module, I get many kmemleak information as, unreferenced object 0xffff88003316b1e0 (size 544): comm "gssproxy", pid 2148, jiffies 4294794465 (age 4200.081s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffffb0cfb58a>] kmemleak_alloc+0x4a/0xa0 [<ffffffffb03507fe>] kmem_cache_alloc+0x15e/0x1f0 [<ffffffffb0639baa>] ida_pre_get+0xaa/0x150 [<ffffffffb0639cfd>] ida_simple_get+0xad/0x180 [<ffffffffc06054fb>] nlmsvc_lookup_host+0x4ab/0x7f0 [lockd] [<ffffffffc0605e1d>] lockd+0x4d/0x270 [lockd] [<ffffffffc06061e5>] param_set_timeout+0x55/0x100 [lockd] [<ffffffffc06cba24>] svc_defer+0x114/0x3f0 [sunrpc] [<ffffffffc06cbbe7>] svc_defer+0x2d7/0x3f0 [sunrpc] [<ffffffffc06c71da>] rpc_show_info+0x8a/0x110 [sunrpc] [<ffffffffb044a33f>] proc_reg_write+0x7f/0xc0 [<ffffffffb038e41f>] __vfs_write+0xdf/0x3c0 [<ffffffffb0390f1f>] vfs_write+0xef/0x240 [<ffffffffb0392fbd>] SyS_write+0xad/0x130 [<ffffffffb0d06c37>] entry_SYSCALL_64_fastpath+0x1a/0xa9 [<ffffffffffffffff>] 0xffffffffffffffff I found, the ida information (dynamic memory) isn't cleanup. Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Fixes: 2f048db4680a ("SUNRPC: Add an identifier for struct rpc_clnt") Cc: stable@vger.kernel.org # v3.12+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'include/dt-bindings/reset/mt2701-resets.h')