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author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-21 15:44:58 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-22 11:05:43 -0700 |
commit | 729fb9d33fe239e350a7e33e9f6aec2767086bd4 (patch) | |
tree | 279db34b83c7e79ffd9445f628349b3695a86b29 | |
parent | 32ea4175aea26181e2ed9a87853bb4bebd44e59e (diff) | |
download | op-kernel-dev-729fb9d33fe239e350a7e33e9f6aec2767086bd4.zip op-kernel-dev-729fb9d33fe239e350a7e33e9f6aec2767086bd4.tar.gz |
w1: slaves: w1_ds2413.c: convert to use w1_family_ops.groups
This moves the sysfs file creation/removal to the w1 core by using the
.groups field, saving code in the slave driver.
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Stein <alexander.stein@informatik.tu-chemnitz.de>
Cc: Mariusz Bialonczyk <manio@skyboo.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r-- | drivers/w1/slaves/w1_ds2413.c | 72 |
1 files changed, 22 insertions, 50 deletions
diff --git a/drivers/w1/slaves/w1_ds2413.c b/drivers/w1/slaves/w1_ds2413.c index 8593777..ee28fc1 100644 --- a/drivers/w1/slaves/w1_ds2413.c +++ b/drivers/w1/slaves/w1_ds2413.c @@ -30,10 +30,9 @@ MODULE_ALIAS("w1-family-" __stringify(W1_FAMILY_DS2413)); #define W1_F3A_FUNC_PIO_ACCESS_WRITE 0x5A #define W1_F3A_SUCCESS_CONFIRM_BYTE 0xAA -static ssize_t w1_f3a_read_state( - struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, - char *buf, loff_t off, size_t count) +static ssize_t state_read(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, loff_t off, + size_t count) { struct w1_slave *sl = kobj_to_w1_slave(kobj); dev_dbg(&sl->dev, @@ -66,10 +65,11 @@ static ssize_t w1_f3a_read_state( return 1; } -static ssize_t w1_f3a_write_output( - struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, - char *buf, loff_t off, size_t count) +static BIN_ATTR_RO(state, 1); + +static ssize_t output_write(struct file *filp, struct kobject *kobj, + struct bin_attribute *bin_attr, char *buf, + loff_t off, size_t count) { struct w1_slave *sl = kobj_to_w1_slave(kobj); u8 w1_buf[3]; @@ -110,53 +110,25 @@ error: return -EIO; } -#define NB_SYSFS_BIN_FILES 2 -static struct bin_attribute w1_f3a_sysfs_bin_files[NB_SYSFS_BIN_FILES] = { - { - .attr = { - .name = "state", - .mode = S_IRUGO, - }, - .size = 1, - .read = w1_f3a_read_state, - }, - { - .attr = { - .name = "output", - .mode = S_IRUGO | S_IWUSR | S_IWGRP, - }, - .size = 1, - .write = w1_f3a_write_output, - } +static BIN_ATTR(output, S_IRUGO | S_IWUSR | S_IWGRP, NULL, output_write, 1); + +static struct bin_attribute *w1_f3a_bin_attrs[] = { + &bin_attr_state, + &bin_attr_output, + NULL, }; -static int w1_f3a_add_slave(struct w1_slave *sl) -{ - int err = 0; - int i; - - for (i = 0; i < NB_SYSFS_BIN_FILES && !err; ++i) - err = sysfs_create_bin_file( - &sl->dev.kobj, - &(w1_f3a_sysfs_bin_files[i])); - if (err) - while (--i >= 0) - sysfs_remove_bin_file(&sl->dev.kobj, - &(w1_f3a_sysfs_bin_files[i])); - return err; -} +static const struct attribute_group w1_f3a_group = { + .bin_attrs = w1_f3a_bin_attrs, +}; -static void w1_f3a_remove_slave(struct w1_slave *sl) -{ - int i; - for (i = NB_SYSFS_BIN_FILES - 1; i >= 0; --i) - sysfs_remove_bin_file(&sl->dev.kobj, - &(w1_f3a_sysfs_bin_files[i])); -} +static const struct attribute_group *w1_f3a_groups[] = { + &w1_f3a_group, + NULL, +}; static struct w1_family_ops w1_f3a_fops = { - .add_slave = w1_f3a_add_slave, - .remove_slave = w1_f3a_remove_slave, + .groups = w1_f3a_groups, }; static struct w1_family w1_family_3a = { |