From df4d737ee4d7205aaa6275158aeebff87fd14488 Mon Sep 17 00:00:00 2001 From: Melissa Wen Date: Sat, 18 May 2019 22:04:56 -0300 Subject: staging:iio:ad7150: fix threshold mode config bit According to the AD7150 configuration register description, bit 7 assumes value 1 when the threshold mode is fixed and 0 when it is adaptive, however, the operation that identifies this mode was considering the opposite values. This patch renames the boolean variable to describe it correctly and properly replaces it in the places where it is used. Fixes: 531efd6aa0991 ("staging:iio:adc:ad7150: chan_spec conv + i2c_smbus commands + drop unused poweroff timeout control.") Signed-off-by: Melissa Wen Signed-off-by: Jonathan Cameron --- drivers/staging/iio/cdc/ad7150.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) (limited to 'drivers/staging') diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c index dd7fcab8e19e..e075244c602b 100644 --- a/drivers/staging/iio/cdc/ad7150.c +++ b/drivers/staging/iio/cdc/ad7150.c @@ -5,6 +5,7 @@ * Copyright 2010-2011 Analog Devices Inc. */ +#include #include #include #include @@ -130,7 +131,7 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev, { int ret; u8 threshtype; - bool adaptive; + bool thrfixed; struct ad7150_chip_info *chip = iio_priv(indio_dev); ret = i2c_smbus_read_byte_data(chip->client, AD7150_CFG); @@ -138,21 +139,23 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev, return ret; threshtype = (ret >> 5) & 0x03; - adaptive = !!(ret & 0x80); + + /*check if threshold mode is fixed or adaptive*/ + thrfixed = FIELD_GET(AD7150_CFG_FIX, ret); switch (type) { case IIO_EV_TYPE_MAG_ADAPTIVE: if (dir == IIO_EV_DIR_RISING) - return adaptive && (threshtype == 0x1); - return adaptive && (threshtype == 0x0); + return !thrfixed && (threshtype == 0x1); + return !thrfixed && (threshtype == 0x0); case IIO_EV_TYPE_THRESH_ADAPTIVE: if (dir == IIO_EV_DIR_RISING) - return adaptive && (threshtype == 0x3); - return adaptive && (threshtype == 0x2); + return !thrfixed && (threshtype == 0x3); + return !thrfixed && (threshtype == 0x2); case IIO_EV_TYPE_THRESH: if (dir == IIO_EV_DIR_RISING) - return !adaptive && (threshtype == 0x1); - return !adaptive && (threshtype == 0x0); + return thrfixed && (threshtype == 0x1); + return thrfixed && (threshtype == 0x0); default: break; } -- cgit v1.2.3-59-g8ed1b From 767e52f045e1fc080e81a754cc31a39b6cf47b99 Mon Sep 17 00:00:00 2001 From: Fabio Estevam Date: Wed, 5 Jun 2019 23:05:32 -0300 Subject: staging: iio: adt7316: Fix build errors when GPIOLIB is not set On x86_64 when GPIOLIB is not set the following build errors are seen: drivers/staging/iio/addac/adt7316.c:947:3: error: implicit declaration of function 'gpiod_set_value' [-Werror=implicit-function-declaration] drivers/staging/iio/addac/adt7316.c:1805:2: error: implicit declaration of function 'irqd_get_trigger_type' [-Werror=implicit-function-declaration] These functions are provided by the and headers, so include them to fix these build errors. While at it, remove as this driver is a GPIO consumer and not a GPIO driver. Reported-by: Randy Dunlap Signed-off-by: Fabio Estevam Acked-by: Randy Dunlap # build-tested Signed-off-by: Jonathan Cameron --- drivers/staging/iio/addac/adt7316.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/staging') diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c index b6a65ee8d558..dc8c25ddb97e 100644 --- a/drivers/staging/iio/addac/adt7316.c +++ b/drivers/staging/iio/addac/adt7316.c @@ -6,7 +6,8 @@ */ #include -#include +#include +#include #include #include #include -- cgit v1.2.3-59-g8ed1b From 5efe5137f05bbb4688890620934538c005e7d1d6 Mon Sep 17 00:00:00 2001 From: Gao Xiang Date: Thu, 13 Jun 2019 16:35:41 +0800 Subject: staging: erofs: add requirements field in superblock There are some backward incompatible features pending for months, mainly due to on-disk format expensions. However, we should ensure that it cannot be mounted with old kernels. Otherwise, it will causes unexpected behaviors. Fixes: ba2b77a82022 ("staging: erofs: add super block operations") Cc: # 4.19+ Reviewed-by: Chao Yu Signed-off-by: Gao Xiang Signed-off-by: Greg Kroah-Hartman --- drivers/staging/erofs/erofs_fs.h | 13 ++++++++++--- drivers/staging/erofs/internal.h | 2 ++ drivers/staging/erofs/super.c | 19 +++++++++++++++++++ 3 files changed, 31 insertions(+), 3 deletions(-) (limited to 'drivers/staging') diff --git a/drivers/staging/erofs/erofs_fs.h b/drivers/staging/erofs/erofs_fs.h index fa52898df006..8ddb2b3e7d39 100644 --- a/drivers/staging/erofs/erofs_fs.h +++ b/drivers/staging/erofs/erofs_fs.h @@ -17,10 +17,16 @@ #define EROFS_SUPER_MAGIC_V1 0xE0F5E1E2 #define EROFS_SUPER_OFFSET 1024 +/* + * Any bits that aren't in EROFS_ALL_REQUIREMENTS should be + * incompatible with this kernel version. + */ +#define EROFS_ALL_REQUIREMENTS 0 + struct erofs_super_block { /* 0 */__le32 magic; /* in the little endian */ /* 4 */__le32 checksum; /* crc32c(super_block) */ -/* 8 */__le32 features; +/* 8 */__le32 features; /* (aka. feature_compat) */ /* 12 */__u8 blkszbits; /* support block_size == PAGE_SIZE only */ /* 13 */__u8 reserved; @@ -34,9 +40,10 @@ struct erofs_super_block { /* 44 */__le32 xattr_blkaddr; /* 48 */__u8 uuid[16]; /* 128-bit uuid for volume */ /* 64 */__u8 volume_name[16]; /* volume name */ +/* 80 */__le32 requirements; /* (aka. feature_incompat) */ -/* 80 */__u8 reserved2[48]; /* 128 bytes */ -} __packed; +/* 84 */__u8 reserved2[44]; +} __packed; /* 128 bytes */ /* * erofs inode data mapping: diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h index c47778b3fabd..382258fc124d 100644 --- a/drivers/staging/erofs/internal.h +++ b/drivers/staging/erofs/internal.h @@ -115,6 +115,8 @@ struct erofs_sb_info { u8 uuid[16]; /* 128-bit uuid for volume */ u8 volume_name[16]; /* volume name */ + u32 requirements; + char *dev_name; unsigned int mount_opt; diff --git a/drivers/staging/erofs/super.c b/drivers/staging/erofs/super.c index f580d4ef77a1..cadbcc11702a 100644 --- a/drivers/staging/erofs/super.c +++ b/drivers/staging/erofs/super.c @@ -71,6 +71,22 @@ static void free_inode(struct inode *inode) kmem_cache_free(erofs_inode_cachep, vi); } +static bool check_layout_compatibility(struct super_block *sb, + struct erofs_super_block *layout) +{ + const unsigned int requirements = le32_to_cpu(layout->requirements); + + EROFS_SB(sb)->requirements = requirements; + + /* check if current kernel meets all mandatory requirements */ + if (requirements & (~EROFS_ALL_REQUIREMENTS)) { + errln("unidentified requirements %x, please upgrade kernel version", + requirements & ~EROFS_ALL_REQUIREMENTS); + return false; + } + return true; +} + static int superblock_read(struct super_block *sb) { struct erofs_sb_info *sbi; @@ -104,6 +120,9 @@ static int superblock_read(struct super_block *sb) goto out; } + if (!check_layout_compatibility(sb, layout)) + goto out; + sbi->blocks = le32_to_cpu(layout->blocks); sbi->meta_blkaddr = le32_to_cpu(layout->meta_blkaddr); #ifdef CONFIG_EROFS_FS_XATTR -- cgit v1.2.3-59-g8ed1b