From a1c67d65df0b5a3858741a144cd43f8e62c5c175 Mon Sep 17 00:00:00 2001 From: Lucas Tanure Date: Tue, 19 Mar 2019 09:41:32 +0000 Subject: regmap: debugfs: Replace code by already existing function Signed-off-by: Lucas Tanure Signed-off-by: Mark Brown --- drivers/base/regmap/regmap-debugfs.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/base/regmap') diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 19eb454f26c3..648779e6df88 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -219,10 +219,7 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, start_reg = regmap_debugfs_get_dump_start(map, from, *ppos, &p); for (i = start_reg; i <= to; i += map->reg_stride) { - if (!regmap_readable(map, i) && !regmap_cached(map, i)) - continue; - - if (regmap_precious(map, i)) + if (!regmap_printable(map, i)) continue; /* If we're in the region the user is trying to read */ -- cgit v1.2.3 From cc6a8d69ba624f0ad7a09ed095b7bd4b86476489 Mon Sep 17 00:00:00 2001 From: Lucas Tanure Date: Tue, 19 Mar 2019 09:41:33 +0000 Subject: regmap: debugfs: Jump to the next readable register Improve the speed of the loop jumping to the next available register Signed-off-by: Lucas Tanure Reviewed-by: Charles Keepax Tested-by: Charles Keepax Signed-off-by: Mark Brown --- drivers/base/regmap/regmap-debugfs.c | 27 ++++++++++++++++++++++++--- 1 file changed, 24 insertions(+), 3 deletions(-) (limited to 'drivers/base/regmap') diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index 648779e6df88..fc45c2bb961a 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -195,6 +195,28 @@ static inline void regmap_calc_tot_len(struct regmap *map, } } +static int regmap_next_readable_reg(struct regmap *map, int reg) +{ + struct regmap_debugfs_off_cache *c; + int ret = -EINVAL; + + if (regmap_printable(map, reg + map->reg_stride)) { + ret = reg + map->reg_stride; + } else { + mutex_lock(&map->cache_lock); + list_for_each_entry(c, &map->debugfs_off_cache, list) { + if (reg > c->max_reg) + continue; + if (reg < c->base_reg) { + ret = c->base_reg; + break; + } + } + mutex_unlock(&map->cache_lock); + } + return ret; +} + static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, unsigned int to, char __user *user_buf, size_t count, loff_t *ppos) @@ -218,9 +240,8 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, /* Work out which register we're starting at */ start_reg = regmap_debugfs_get_dump_start(map, from, *ppos, &p); - for (i = start_reg; i <= to; i += map->reg_stride) { - if (!regmap_printable(map, i)) - continue; + for (i = start_reg; i >= 0 && i <= to; + i = regmap_next_readable_reg(map, i)) { /* If we're in the region the user is trying to read */ if (p >= *ppos) { -- cgit v1.2.3 From 8b9f9d4dc511309918c4f6793bae7387c0c638af Mon Sep 17 00:00:00 2001 From: Han Nandor Date: Tue, 2 Apr 2019 08:01:22 +0000 Subject: regmap: verify if register is writeable before writing operations regmap provides a couple of ways to validate the register range used. a) maxim allowed register, b) writable/readable register tables, c) callback function that can be provided by the driver to validate a register. regmap framework should verify if registers are writeable before every write operation. However this doesn't seems to happen in every situation. The method `_regmap_raw_write_impl` is only using the `writeable_reg` callback to verify if register is writeable, ignoring the other two. This can lead to undefined behaviour since this allows to write to registers that could be declared un-writeable by using any other option. Change `_regmap_raw_write_impl` to use the `regmap_writeable` method to verify if registers are writable before the write operation. Signed-off-by: Nandor Han Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) (limited to 'drivers/base/regmap') diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 4f822e087def..42d8404bc8cc 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1493,11 +1493,10 @@ static int _regmap_raw_write_impl(struct regmap *map, unsigned int reg, WARN_ON(!map->bus); /* Check for unwritable registers before we start */ - if (map->writeable_reg) - for (i = 0; i < val_len / map->format.val_bytes; i++) - if (!map->writeable_reg(map->dev, - reg + regmap_get_offset(map, i))) - return -EINVAL; + for (i = 0; i < val_len / map->format.val_bytes; i++) + if (!regmap_writeable(map, + reg + regmap_get_offset(map, i))) + return -EINVAL; if (!map->cache_bypass && map->format.parse_val) { unsigned int ival; -- cgit v1.2.3 From 37613fa5b762a73073de3c2e23baa4a1da337e71 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 25 Apr 2019 20:06:18 +0200 Subject: regmap: add proper SPDX identifiers on files that did not have them. There were a few files in the regmap code that did not have SPDX identifiers on them, so fix that up. At the same time, remove the "free form" text that specified the license of the file, as that is impossible for any tool to properly parse. Also, as Mark loves // comment markers, convert all of the headers to be the same to make things look consistent :) Signed-off-by: Greg Kroah-Hartman Signed-off-by: Mark Brown --- drivers/base/regmap/internal.h | 5 +---- drivers/base/regmap/regcache-flat.c | 18 +++++++----------- drivers/base/regmap/regcache-lzo.c | 18 +++++++----------- drivers/base/regmap/regcache-rbtree.c | 18 +++++++----------- drivers/base/regmap/regcache.c | 18 +++++++----------- drivers/base/regmap/regmap-ac97.c | 22 +++++----------------- drivers/base/regmap/regmap-debugfs.c | 18 +++++++----------- drivers/base/regmap/regmap-i2c.c | 18 +++++++----------- drivers/base/regmap/regmap-irq.c | 18 +++++++----------- drivers/base/regmap/regmap-mmio.c | 22 +++++----------------- drivers/base/regmap/regmap-spi.c | 18 +++++++----------- drivers/base/regmap/regmap-spmi.c | 29 ++++++++++------------------- drivers/base/regmap/regmap-w1.c | 16 ++++++---------- drivers/base/regmap/regmap.c | 18 +++++++----------- 14 files changed, 90 insertions(+), 166 deletions(-) (limited to 'drivers/base/regmap') diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index a98fced9bff8..3d80c4b43f72 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -1,13 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ /* * Register map access API internal header * * Copyright 2011 Wolfson Microelectronics plc * * Author: Mark Brown - * - * 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. */ #ifndef _REGMAP_INTERNAL_H diff --git a/drivers/base/regmap/regcache-flat.c b/drivers/base/regmap/regcache-flat.c index bc6cd88b8cc6..b7e4b2464102 100644 --- a/drivers/base/regmap/regcache-flat.c +++ b/drivers/base/regmap/regcache-flat.c @@ -1,14 +1,10 @@ -/* - * Register cache access API - flat caching support - * - * Copyright 2012 Wolfson Microelectronics plc - * - * Author: Mark Brown - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register cache access API - flat caching support +// +// Copyright 2012 Wolfson Microelectronics plc +// +// Author: Mark Brown #include #include diff --git a/drivers/base/regmap/regcache-lzo.c b/drivers/base/regmap/regcache-lzo.c index 4ff311374c4a..fc14e8b9344f 100644 --- a/drivers/base/regmap/regcache-lzo.c +++ b/drivers/base/regmap/regcache-lzo.c @@ -1,14 +1,10 @@ -/* - * Register cache access API - LZO caching support - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Dimitris Papastamos - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register cache access API - LZO caching support +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Dimitris Papastamos #include #include diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index 9cbb4b0cd01b..cfa29dc89bbf 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -1,14 +1,10 @@ -/* - * Register cache access API - rbtree caching support - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Dimitris Papastamos - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register cache access API - rbtree caching support +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Dimitris Papastamos #include #include diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c index 773560348337..a93cafd7be4f 100644 --- a/drivers/base/regmap/regcache.c +++ b/drivers/base/regmap/regcache.c @@ -1,14 +1,10 @@ -/* - * Register cache access API - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Dimitris Papastamos - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register cache access API +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Dimitris Papastamos #include #include diff --git a/drivers/base/regmap/regmap-ac97.c b/drivers/base/regmap/regmap-ac97.c index c03ebfd4c731..b9f76bdf74a9 100644 --- a/drivers/base/regmap/regmap-ac97.c +++ b/drivers/base/regmap/regmap-ac97.c @@ -1,20 +1,8 @@ -/* - * Register map access API - AC'97 support - * - * Copyright 2013 Linaro Ltd. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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, see . - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API - AC'97 support +// +// Copyright 2013 Linaro Ltd. All rights reserved. #include #include diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index fc45c2bb961a..263f82516ff4 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -1,14 +1,10 @@ -/* - * Register map access API - debugfs - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Mark Brown - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API - debugfs +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Mark Brown #include #include diff --git a/drivers/base/regmap/regmap-i2c.c b/drivers/base/regmap/regmap-i2c.c index 056acde5e7d3..ac9b31c57967 100644 --- a/drivers/base/regmap/regmap-i2c.c +++ b/drivers/base/regmap/regmap-i2c.c @@ -1,14 +1,10 @@ -/* - * Register map access API - I2C support - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Mark Brown - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API - I2C support +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Mark Brown #include #include diff --git a/drivers/base/regmap/regmap-irq.c b/drivers/base/regmap/regmap-irq.c index 5059748afd4c..c4dcfca01faa 100644 --- a/drivers/base/regmap/regmap-irq.c +++ b/drivers/base/regmap/regmap-irq.c @@ -1,14 +1,10 @@ -/* - * regmap based irq_chip - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Mark Brown - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// regmap based irq_chip +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Mark Brown #include #include diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c index 8741fb5f8f54..af967d8f975e 100644 --- a/drivers/base/regmap/regmap-mmio.c +++ b/drivers/base/regmap/regmap-mmio.c @@ -1,20 +1,8 @@ -/* - * Register map access API - MMIO support - * - * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope 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, see . - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API - MMIO support +// +// Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. #include #include diff --git a/drivers/base/regmap/regmap-spi.c b/drivers/base/regmap/regmap-spi.c index c7150dd264d5..c1894e93c378 100644 --- a/drivers/base/regmap/regmap-spi.c +++ b/drivers/base/regmap/regmap-spi.c @@ -1,14 +1,10 @@ -/* - * Register map access API - SPI support - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Mark Brown - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API - SPI support +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Mark Brown #include #include diff --git a/drivers/base/regmap/regmap-spmi.c b/drivers/base/regmap/regmap-spmi.c index 0bfb8ed244d5..cdf12d2aa3a1 100644 --- a/drivers/base/regmap/regmap-spmi.c +++ b/drivers/base/regmap/regmap-spmi.c @@ -1,22 +1,13 @@ -/* - * Register map access API - SPMI support - * - * Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. - * - * Based on regmap-i2c.c: - * Copyright 2011 Wolfson Microelectronics plc - * Author: Mark Brown - * - * 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 - * only 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. - * - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API - SPMI support +// +// Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. +// +// Based on regmap-i2c.c: +// Copyright 2011 Wolfson Microelectronics plc +// Author: Mark Brown + #include #include #include diff --git a/drivers/base/regmap/regmap-w1.c b/drivers/base/regmap/regmap-w1.c index e6c64b0be5b2..3a7d30b8c3ac 100644 --- a/drivers/base/regmap/regmap-w1.c +++ b/drivers/base/regmap/regmap-w1.c @@ -1,13 +1,9 @@ -/* - * Register map access API - W1 (1-Wire) support - * - * Copyright (c) 2017 Radioavionica Corporation - * Author: Alex A. Mihaylov - * - * 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 - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API - W1 (1-Wire) support +// +// Copyright (c) 2017 Radioavionica Corporation +// Author: Alex A. Mihaylov #include #include diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 42d8404bc8cc..f1025452bb39 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1,14 +1,10 @@ -/* - * Register map access API - * - * Copyright 2011 Wolfson Microelectronics plc - * - * Author: Mark Brown - * - * 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. - */ +// SPDX-License-Identifier: GPL-2.0 +// +// Register map access API +// +// Copyright 2011 Wolfson Microelectronics plc +// +// Author: Mark Brown #include #include -- cgit v1.2.3