diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/eeprom/at24.c | 71 | ||||
| -rw-r--r-- | drivers/misc/eeprom/eeprom.c | 2 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/bugs.c | 10 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/core.c | 2 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/lkdtm.h | 2 | ||||
| -rw-r--r-- | drivers/misc/lkdtm/usercopy.c | 15 | ||||
| -rw-r--r-- | drivers/misc/pci_endpoint_test.c | 17 |
7 files changed, 79 insertions, 40 deletions
diff --git a/drivers/misc/eeprom/at24.c b/drivers/misc/eeprom/at24.c index 26a23abc053d..1c0a41803bb6 100644 --- a/drivers/misc/eeprom/at24.c +++ b/drivers/misc/eeprom/at24.c @@ -8,6 +8,7 @@ #include <linux/acpi.h> #include <linux/bitops.h> +#include <linux/capability.h> #include <linux/delay.h> #include <linux/i2c.h> #include <linux/init.h> @@ -89,6 +90,7 @@ struct at24_data { struct nvmem_device *nvmem; struct regulator *vcc_reg; + void (*read_post)(unsigned int off, char *buf, size_t count); /* * Some chips tie up multiple I2C addresses; dummy devices reserve @@ -121,6 +123,7 @@ MODULE_PARM_DESC(at24_write_timeout, "Time (in ms) to try writes (default 25)"); struct at24_chip_data { u32 byte_len; u8 flags; + void (*read_post)(unsigned int off, char *buf, size_t count); }; #define AT24_CHIP_DATA(_name, _len, _flags) \ @@ -128,6 +131,32 @@ struct at24_chip_data { .byte_len = _len, .flags = _flags, \ } +#define AT24_CHIP_DATA_CB(_name, _len, _flags, _read_post) \ + static const struct at24_chip_data _name = { \ + .byte_len = _len, .flags = _flags, \ + .read_post = _read_post, \ + } + +static void at24_read_post_vaio(unsigned int off, char *buf, size_t count) +{ + int i; + + if (capable(CAP_SYS_ADMIN)) + return; + + /* + * Hide VAIO private settings to regular users: + * - BIOS passwords: bytes 0x00 to 0x0f + * - UUID: bytes 0x10 to 0x1f + * - Serial number: 0xc0 to 0xdf + */ + for (i = 0; i < count; i++) { + if ((off + i <= 0x1f) || + (off + i >= 0xc0 && off + i <= 0xdf)) + buf[i] = 0; + } +} + /* needs 8 addresses as A0-A2 are ignored */ AT24_CHIP_DATA(at24_data_24c00, 128 / 8, AT24_FLAG_TAKE8ADDR); /* old variants can't be handled with this generic entry! */ @@ -144,6 +173,10 @@ AT24_CHIP_DATA(at24_data_24mac602, 64 / 8, /* spd is a 24c02 in memory DIMMs */ AT24_CHIP_DATA(at24_data_spd, 2048 / 8, AT24_FLAG_READONLY | AT24_FLAG_IRUGO); +/* 24c02_vaio is a 24c02 on some Sony laptops */ +AT24_CHIP_DATA_CB(at24_data_24c02_vaio, 2048 / 8, + AT24_FLAG_READONLY | AT24_FLAG_IRUGO, + at24_read_post_vaio); AT24_CHIP_DATA(at24_data_24c04, 4096 / 8, 0); AT24_CHIP_DATA(at24_data_24cs04, 16, AT24_FLAG_SERIAL | AT24_FLAG_READONLY); @@ -177,6 +210,7 @@ static const struct i2c_device_id at24_ids[] = { { "24mac402", (kernel_ulong_t)&at24_data_24mac402 }, { "24mac602", (kernel_ulong_t)&at24_data_24mac602 }, { "spd", (kernel_ulong_t)&at24_data_spd }, + { "24c02-vaio", (kernel_ulong_t)&at24_data_24c02_vaio }, { "24c04", (kernel_ulong_t)&at24_data_24c04 }, { "24cs04", (kernel_ulong_t)&at24_data_24cs04 }, { "24c08", (kernel_ulong_t)&at24_data_24c08 }, @@ -388,7 +422,7 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count) struct at24_data *at24; struct device *dev; char *buf = val; - int ret; + int i, ret; at24 = priv; dev = at24_base_client_dev(at24); @@ -411,22 +445,22 @@ static int at24_read(void *priv, unsigned int off, void *val, size_t count) */ mutex_lock(&at24->lock); - while (count) { - ret = at24_regmap_read(at24, buf, off, count); + for (i = 0; count; i += ret, count -= ret) { + ret = at24_regmap_read(at24, buf + i, off + i, count); if (ret < 0) { mutex_unlock(&at24->lock); pm_runtime_put(dev); return ret; } - buf += ret; - off += ret; - count -= ret; } mutex_unlock(&at24->lock); pm_runtime_put(dev); + if (unlikely(at24->read_post)) + at24->read_post(off, buf, i); + return 0; } @@ -654,6 +688,7 @@ static int at24_probe(struct i2c_client *client) at24->byte_len = byte_len; at24->page_size = page_size; at24->flags = flags; + at24->read_post = cdata->read_post; at24->num_addresses = num_addresses; at24->offset_adj = at24_get_offset_adj(flags, byte_len); at24->client[0].client = client; @@ -678,8 +713,30 @@ static int at24_probe(struct i2c_client *client) return err; } - nvmem_config.name = dev_name(dev); + /* + * If the 'label' property is not present for the AT24 EEPROM, + * then nvmem_config.id is initialised to NVMEM_DEVID_AUTO, + * and this will append the 'devid' to the name of the NVMEM + * device. This is purely legacy and the AT24 driver has always + * defaulted to this. However, if the 'label' property is + * present then this means that the name is specified by the + * firmware and this name should be used verbatim and so it is + * not necessary to append the 'devid'. + */ + if (device_property_present(dev, "label")) { + nvmem_config.id = NVMEM_DEVID_NONE; + err = device_property_read_string(dev, "label", + &nvmem_config.name); + if (err) + return err; + } else { + nvmem_config.id = NVMEM_DEVID_AUTO; + nvmem_config.name = dev_name(dev); + } + + nvmem_config.type = NVMEM_TYPE_EEPROM; nvmem_config.dev = dev; + nvmem_config.id = NVMEM_DEVID_AUTO; nvmem_config.read_only = !writable; nvmem_config.root_only = !(flags & AT24_FLAG_IRUGO); nvmem_config.owner = THIS_MODULE; diff --git a/drivers/misc/eeprom/eeprom.c b/drivers/misc/eeprom/eeprom.c index 226b5efa6a77..34fa385dfd4b 100644 --- a/drivers/misc/eeprom/eeprom.c +++ b/drivers/misc/eeprom/eeprom.c @@ -76,7 +76,7 @@ static ssize_t eeprom_read(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { - struct i2c_client *client = to_i2c_client(kobj_to_dev(kobj)); + struct i2c_client *client = kobj_to_i2c_client(kobj); struct eeprom_data *data = i2c_get_clientdata(client); u8 slice; diff --git a/drivers/misc/lkdtm/bugs.c b/drivers/misc/lkdtm/bugs.c index 4dfbfd51bdf7..a0675d4154d2 100644 --- a/drivers/misc/lkdtm/bugs.c +++ b/drivers/misc/lkdtm/bugs.c @@ -312,16 +312,6 @@ void lkdtm_CORRUPT_LIST_DEL(void) pr_err("list_del() corruption not detected!\n"); } -/* Test if unbalanced set_fs(KERNEL_DS)/set_fs(USER_DS) check exists. */ -void lkdtm_CORRUPT_USER_DS(void) -{ - pr_info("setting bad task size limit\n"); - set_fs(KERNEL_DS); - - /* Make sure we do not keep running with a KERNEL_DS! */ - force_sig(SIGKILL); -} - /* Test that VMAP_STACK is actually allocating with a leading guard page */ void lkdtm_STACK_GUARD_PAGE_LEADING(void) { diff --git a/drivers/misc/lkdtm/core.c b/drivers/misc/lkdtm/core.c index a5e344df9166..97803f213d9d 100644 --- a/drivers/misc/lkdtm/core.c +++ b/drivers/misc/lkdtm/core.c @@ -112,7 +112,6 @@ static const struct crashtype crashtypes[] = { CRASHTYPE(CORRUPT_STACK_STRONG), CRASHTYPE(CORRUPT_LIST_ADD), CRASHTYPE(CORRUPT_LIST_DEL), - CRASHTYPE(CORRUPT_USER_DS), CRASHTYPE(STACK_GUARD_PAGE_LEADING), CRASHTYPE(STACK_GUARD_PAGE_TRAILING), CRASHTYPE(UNSET_SMEP), @@ -172,7 +171,6 @@ static const struct crashtype crashtypes[] = { CRASHTYPE(USERCOPY_STACK_FRAME_FROM), CRASHTYPE(USERCOPY_STACK_BEYOND), CRASHTYPE(USERCOPY_KERNEL), - CRASHTYPE(USERCOPY_KERNEL_DS), CRASHTYPE(STACKLEAK_ERASING), CRASHTYPE(CFI_FORWARD_PROTO), #ifdef CONFIG_X86_32 diff --git a/drivers/misc/lkdtm/lkdtm.h b/drivers/misc/lkdtm/lkdtm.h index 8878538b2c13..6dec4c9b442f 100644 --- a/drivers/misc/lkdtm/lkdtm.h +++ b/drivers/misc/lkdtm/lkdtm.h @@ -27,7 +27,6 @@ void lkdtm_OVERFLOW_UNSIGNED(void); void lkdtm_ARRAY_BOUNDS(void); void lkdtm_CORRUPT_LIST_ADD(void); void lkdtm_CORRUPT_LIST_DEL(void); -void lkdtm_CORRUPT_USER_DS(void); void lkdtm_STACK_GUARD_PAGE_LEADING(void); void lkdtm_STACK_GUARD_PAGE_TRAILING(void); void lkdtm_UNSET_SMEP(void); @@ -96,7 +95,6 @@ void lkdtm_USERCOPY_STACK_FRAME_TO(void); void lkdtm_USERCOPY_STACK_FRAME_FROM(void); void lkdtm_USERCOPY_STACK_BEYOND(void); void lkdtm_USERCOPY_KERNEL(void); -void lkdtm_USERCOPY_KERNEL_DS(void); /* lkdtm_stackleak.c */ void lkdtm_STACKLEAK_ERASING(void); diff --git a/drivers/misc/lkdtm/usercopy.c b/drivers/misc/lkdtm/usercopy.c index b833367a45d0..109e8d4302c1 100644 --- a/drivers/misc/lkdtm/usercopy.c +++ b/drivers/misc/lkdtm/usercopy.c @@ -325,21 +325,6 @@ free_user: vm_munmap(user_addr, PAGE_SIZE); } -void lkdtm_USERCOPY_KERNEL_DS(void) -{ - char __user *user_ptr = - (char __user *)(0xFUL << (sizeof(unsigned long) * 8 - 4)); - mm_segment_t old_fs = get_fs(); - char buf[10] = {0}; - - pr_info("attempting copy_to_user() to noncanonical address: %px\n", - user_ptr); - set_fs(KERNEL_DS); - if (copy_to_user(user_ptr, buf, sizeof(buf)) == 0) - pr_err("copy_to_user() to noncanonical address succeeded!?\n"); - set_fs(old_fs); -} - void __init lkdtm_usercopy_init(void) { /* Prepare cache that lacks SLAB_USERCOPY flag. */ diff --git a/drivers/misc/pci_endpoint_test.c b/drivers/misc/pci_endpoint_test.c index e060796f9caa..146ca6fb3260 100644 --- a/drivers/misc/pci_endpoint_test.c +++ b/drivers/misc/pci_endpoint_test.c @@ -70,11 +70,15 @@ #define PCI_DEVICE_ID_TI_J721E 0xb00d #define PCI_DEVICE_ID_TI_AM654 0xb00c +#define PCI_DEVICE_ID_LS1088A 0x80c0 #define is_am654_pci_dev(pdev) \ ((pdev)->device == PCI_DEVICE_ID_TI_AM654) +#define PCI_DEVICE_ID_RENESAS_R8A774A1 0x0028 +#define PCI_DEVICE_ID_RENESAS_R8A774B1 0x002b #define PCI_DEVICE_ID_RENESAS_R8A774C0 0x002d +#define PCI_DEVICE_ID_RENESAS_R8A774E1 0x0025 static DEFINE_IDA(pci_endpoint_test_ida); @@ -945,13 +949,20 @@ static const struct pci_device_id pci_endpoint_test_tbl[] = { { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_DRA72x), .driver_data = (kernel_ulong_t)&default_data, }, - { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0) }, + { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, 0x81c0), + .driver_data = (kernel_ulong_t)&default_data, + }, + { PCI_DEVICE(PCI_VENDOR_ID_FREESCALE, PCI_DEVICE_ID_LS1088A), + .driver_data = (kernel_ulong_t)&default_data, + }, { PCI_DEVICE_DATA(SYNOPSYS, EDDA, NULL) }, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_AM654), .driver_data = (kernel_ulong_t)&am654_data }, - { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774C0), - }, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774A1),}, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774B1),}, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774C0),}, + { PCI_DEVICE(PCI_VENDOR_ID_RENESAS, PCI_DEVICE_ID_RENESAS_R8A774E1),}, { PCI_DEVICE(PCI_VENDOR_ID_TI, PCI_DEVICE_ID_TI_J721E), .driver_data = (kernel_ulong_t)&j721e_data, }, |