From 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 15 Dec 2015 14:52:16 -0300 Subject: Linux-libre 4.3.2-gnu --- drivers/misc/eeprom/Kconfig | 13 --- drivers/misc/eeprom/Makefile | 1 - drivers/misc/eeprom/at24.c | 38 ++------- drivers/misc/eeprom/eeprom.c | 5 -- drivers/misc/eeprom/eeprom_93xx46.c | 14 ---- drivers/misc/eeprom/max6875.c | 7 +- drivers/misc/eeprom/sunxi_sid.c | 156 ------------------------------------ 7 files changed, 7 insertions(+), 227 deletions(-) delete mode 100644 drivers/misc/eeprom/sunxi_sid.c (limited to 'drivers/misc/eeprom') diff --git a/drivers/misc/eeprom/Kconfig b/drivers/misc/eeprom/Kconfig index 9536852fd..04f2e1fa9 100644 --- a/drivers/misc/eeprom/Kconfig +++ b/drivers/misc/eeprom/Kconfig @@ -96,17 +96,4 @@ config EEPROM_DIGSY_MTC_CFG If unsure, say N. -config EEPROM_SUNXI_SID - tristate "Allwinner sunxi security ID support" - depends on ARCH_SUNXI && SYSFS - help - This is a driver for the 'security ID' available on various Allwinner - devices. - - Due to the potential risks involved with changing e-fuses, - this driver is read-only. - - This driver can also be built as a module. If so, the module - will be called sunxi_sid. - endmenu diff --git a/drivers/misc/eeprom/Makefile b/drivers/misc/eeprom/Makefile index 9507aec95..fc1e81d29 100644 --- a/drivers/misc/eeprom/Makefile +++ b/drivers/misc/eeprom/Makefile @@ -4,5 +4,4 @@ obj-$(CONFIG_EEPROM_LEGACY) += eeprom.o obj-$(CONFIG_EEPROM_MAX6875) += max6875.o obj-$(CONFIG_EEPROM_93CX6) += eeprom_93cx6.o obj-$(CONFIG_EEPROM_93XX46) += eeprom_93xx46.o -obj-$(CONFIG_EEPROM_SUNXI_SID) += sunxi_sid.o obj-$(CONFIG_EEPROM_DIGSY_MTC_CFG) += digsy_mtc_eeprom.o diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 6ded3dc36..c6cb7f8f3 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -186,19 +186,11 @@ static ssize_t at24_eeprom_read(struct at24_data *at24, char *buf, if (count > io_limit) count = io_limit; - switch (at24->use_smbus) { - case I2C_SMBUS_I2C_BLOCK_DATA: + if (at24->use_smbus) { /* Smaller eeproms can work given some SMBus extension calls */ if (count > I2C_SMBUS_BLOCK_MAX) count = I2C_SMBUS_BLOCK_MAX; - break; - case I2C_SMBUS_WORD_DATA: - count = 2; - break; - case I2C_SMBUS_BYTE_DATA: - count = 1; - break; - default: + } else { /* * When we have a better choice than SMBus calls, use a * combined I2C message. Write address; then read up to @@ -229,27 +221,10 @@ static ssize_t at24_eeprom_read(struct at24_data *at24, char *buf, timeout = jiffies + msecs_to_jiffies(write_timeout); do { read_time = jiffies; - switch (at24->use_smbus) { - case I2C_SMBUS_I2C_BLOCK_DATA: - status = i2c_smbus_read_i2c_block_data(client, offset, - count, buf); - break; - case I2C_SMBUS_WORD_DATA: - status = i2c_smbus_read_word_data(client, offset); - if (status >= 0) { - buf[0] = status & 0xff; - buf[1] = status >> 8; - status = count; - } - break; - case I2C_SMBUS_BYTE_DATA: - status = i2c_smbus_read_byte_data(client, offset); - if (status >= 0) { - buf[0] = status; - status = count; - } - break; - default: + if (at24->use_smbus) { + status = i2c_smbus_read_i2c_block_data_or_emulated(client, offset, + count, buf); + } else { status = i2c_transfer(client->adapter, msg, 2); if (status == 2) status = count; @@ -686,7 +661,6 @@ static int at24_remove(struct i2c_client *client) static struct i2c_driver at24_driver = { .driver = { .name = "at24", - .owner = THIS_MODULE, }, .probe = at24_probe, .remove = at24_remove, diff --git a/drivers/misc/eeprom/eeprom.c b/drivers/misc/eeprom/eeprom.c index b432873de..7342fd637 100644 --- a/drivers/misc/eeprom/eeprom.c +++ b/drivers/misc/eeprom/eeprom.c @@ -88,11 +88,6 @@ static ssize_t eeprom_read(struct file *filp, struct kobject *kobj, struct eeprom_data *data = i2c_get_clientdata(client); u8 slice; - if (off > EEPROM_SIZE) - return 0; - if (off + count > EEPROM_SIZE) - count = EEPROM_SIZE - off; - /* Only refresh slices which contain requested bytes */ for (slice = off >> 5; slice <= (off + count - 1) >> 5; slice++) eeprom_update_client(client, slice); diff --git a/drivers/misc/eeprom/eeprom_93xx46.c b/drivers/misc/eeprom/eeprom_93xx46.c index 9ebeacdb8..a6bd9e3fe 100644 --- a/drivers/misc/eeprom/eeprom_93xx46.c +++ b/drivers/misc/eeprom/eeprom_93xx46.c @@ -48,13 +48,6 @@ eeprom_93xx46_bin_read(struct file *filp, struct kobject *kobj, dev = container_of(kobj, struct device, kobj); edev = dev_get_drvdata(dev); - if (unlikely(off >= edev->bin.size)) - return 0; - if ((off + count) > edev->bin.size) - count = edev->bin.size - off; - if (unlikely(!count)) - return count; - cmd_addr = OP_READ << edev->addrlen; if (edev->addrlen == 7) { @@ -200,13 +193,6 @@ eeprom_93xx46_bin_write(struct file *filp, struct kobject *kobj, dev = container_of(kobj, struct device, kobj); edev = dev_get_drvdata(dev); - if (unlikely(off >= edev->bin.size)) - return -EFBIG; - if ((off + count) > edev->bin.size) - count = edev->bin.size - off; - if (unlikely(!count)) - return count; - /* only write even number of bytes on 16-bit devices */ if (edev->addrlen == 6) { step = 2; diff --git a/drivers/misc/eeprom/max6875.c b/drivers/misc/eeprom/max6875.c index 580ff9df5..e4dd93b25 100644 --- a/drivers/misc/eeprom/max6875.c +++ b/drivers/misc/eeprom/max6875.c @@ -114,12 +114,6 @@ static ssize_t max6875_read(struct file *filp, struct kobject *kobj, struct max6875_data *data = i2c_get_clientdata(client); int slice, max_slice; - if (off > USER_EEPROM_SIZE) - return 0; - - if (off + count > USER_EEPROM_SIZE) - count = USER_EEPROM_SIZE - off; - /* refresh slices which contain requested bytes */ max_slice = (off + count - 1) >> SLICE_BITS; for (slice = (off >> SLICE_BITS); slice <= max_slice; slice++) @@ -197,6 +191,7 @@ static const struct i2c_device_id max6875_id[] = { { "max6875", 0 }, { } }; +MODULE_DEVICE_TABLE(i2c, max6875_id); static struct i2c_driver max6875_driver = { .driver = { diff --git a/drivers/misc/eeprom/sunxi_sid.c b/drivers/misc/eeprom/sunxi_sid.c deleted file mode 100644 index 8385177ff..000000000 --- a/drivers/misc/eeprom/sunxi_sid.c +++ /dev/null @@ -1,156 +0,0 @@ -/* - * Copyright (c) 2013 Oliver Schinagl - * http://www.linux-sunxi.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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. - * - * This driver exposes the Allwinner security ID, efuses exported in byte- - * sized chunks. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define DRV_NAME "sunxi-sid" - -struct sunxi_sid_data { - void __iomem *reg_base; - unsigned int keysize; -}; - -/* We read the entire key, due to a 32 bit read alignment requirement. Since we - * want to return the requested byte, this results in somewhat slower code and - * uses 4 times more reads as needed but keeps code simpler. Since the SID is - * only very rarely probed, this is not really an issue. - */ -static u8 sunxi_sid_read_byte(const struct sunxi_sid_data *sid_data, - const unsigned int offset) -{ - u32 sid_key; - - if (offset >= sid_data->keysize) - return 0; - - sid_key = ioread32be(sid_data->reg_base + round_down(offset, 4)); - sid_key >>= (offset % 4) * 8; - - return sid_key; /* Only return the last byte */ -} - -static ssize_t sid_read(struct file *fd, struct kobject *kobj, - struct bin_attribute *attr, char *buf, - loff_t pos, size_t size) -{ - struct platform_device *pdev; - struct sunxi_sid_data *sid_data; - int i; - - pdev = to_platform_device(kobj_to_dev(kobj)); - sid_data = platform_get_drvdata(pdev); - - if (pos < 0 || pos >= sid_data->keysize) - return 0; - if (size > sid_data->keysize - pos) - size = sid_data->keysize - pos; - - for (i = 0; i < size; i++) - buf[i] = sunxi_sid_read_byte(sid_data, pos + i); - - return i; -} - -static struct bin_attribute sid_bin_attr = { - .attr = { .name = "eeprom", .mode = S_IRUGO, }, - .read = sid_read, -}; - -static int sunxi_sid_remove(struct platform_device *pdev) -{ - device_remove_bin_file(&pdev->dev, &sid_bin_attr); - dev_dbg(&pdev->dev, "driver unloaded\n"); - - return 0; -} - -static const struct of_device_id sunxi_sid_of_match[] = { - { .compatible = "allwinner,sun4i-a10-sid", .data = (void *)16}, - { .compatible = "allwinner,sun7i-a20-sid", .data = (void *)512}, - {/* sentinel */}, -}; -MODULE_DEVICE_TABLE(of, sunxi_sid_of_match); - -static int sunxi_sid_probe(struct platform_device *pdev) -{ - struct sunxi_sid_data *sid_data; - struct resource *res; - const struct of_device_id *of_dev_id; - u8 *entropy; - unsigned int i; - - sid_data = devm_kzalloc(&pdev->dev, sizeof(struct sunxi_sid_data), - GFP_KERNEL); - if (!sid_data) - return -ENOMEM; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - sid_data->reg_base = devm_ioremap_resource(&pdev->dev, res); - if (IS_ERR(sid_data->reg_base)) - return PTR_ERR(sid_data->reg_base); - - of_dev_id = of_match_device(sunxi_sid_of_match, &pdev->dev); - if (!of_dev_id) - return -ENODEV; - sid_data->keysize = (int)of_dev_id->data; - - platform_set_drvdata(pdev, sid_data); - - sid_bin_attr.size = sid_data->keysize; - if (device_create_bin_file(&pdev->dev, &sid_bin_attr)) - return -ENODEV; - - entropy = kzalloc(sizeof(u8) * sid_data->keysize, GFP_KERNEL); - for (i = 0; i < sid_data->keysize; i++) - entropy[i] = sunxi_sid_read_byte(sid_data, i); - add_device_randomness(entropy, sid_data->keysize); - kfree(entropy); - - dev_dbg(&pdev->dev, "loaded\n"); - - return 0; -} - -static struct platform_driver sunxi_sid_driver = { - .probe = sunxi_sid_probe, - .remove = sunxi_sid_remove, - .driver = { - .name = DRV_NAME, - .of_match_table = sunxi_sid_of_match, - }, -}; -module_platform_driver(sunxi_sid_driver); - -MODULE_AUTHOR("Oliver Schinagl "); -MODULE_DESCRIPTION("Allwinner sunxi security id driver"); -MODULE_LICENSE("GPL"); -- cgit v1.2.3-54-g00ecf