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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 15:49:58 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 15:49:58 -0700 |
| commit | e80ab411e589e00550e2e6e5a6a02d59cc730357 (patch) | |
| tree | 870225ff7b5b8d03e82a996963213a4bb9cce248 /fs/sysfs/file.c | |
| parent | 529a41e36673b518c9e091f3a8d932b6b9e3c461 (diff) | |
| parent | ee959b00c335d7780136c5abda37809191fe52c3 (diff) | |
| download | linux-e80ab411e589e00550e2e6e5a6a02d59cc730357.tar.bz2 | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6: (36 commits)
SCSI: convert struct class_device to struct device
DRM: remove unused dev_class
IB: rename "dev" to "srp_dev" in srp_host structure
IB: convert struct class_device to struct device
memstick: convert struct class_device to struct device
driver core: replace remaining __FUNCTION__ occurrences
sysfs: refill attribute buffer when reading from offset 0
PM: Remove destroy_suspended_device()
Firmware: add iSCSI iBFT Support
PM: Remove legacy PM (fix)
Kobject: Replace list_for_each() with list_for_each_entry().
SYSFS: Explicitly include required header file slab.h.
Driver core: make device_is_registered() work for class devices
PM: Convert wakeup flag accessors to inline functions
PM: Make wakeup flags available whenever CONFIG_PM is set
PM: Fix misuse of wakeup flag accessors in serial core
Driver core: Call device_pm_add() after bus_add_device() in device_add()
PM: Handle device registrations during suspend/resume
block: send disk "change" event for rescan_partitions()
sysdev: detect multiple driver registrations
...
Fixed trivial conflict in include/linux/memory.h due to semaphore header
file change (made irrelevant by the change to mutex).
Diffstat (limited to 'fs/sysfs/file.c')
| -rw-r--r-- | fs/sysfs/file.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c index baa663e69388..ade9a7e6a757 100644 --- a/fs/sysfs/file.c +++ b/fs/sysfs/file.c @@ -13,6 +13,7 @@ #include <linux/module.h> #include <linux/kobject.h> #include <linux/kallsyms.h> +#include <linux/slab.h> #include <linux/namei.h> #include <linux/poll.h> #include <linux/list.h> @@ -128,7 +129,7 @@ sysfs_read_file(struct file *file, char __user *buf, size_t count, loff_t *ppos) ssize_t retval = 0; mutex_lock(&buffer->mutex); - if (buffer->needs_read_fill) { + if (buffer->needs_read_fill || *ppos == 0) { retval = fill_read_buffer(file->f_path.dentry,buffer); if (retval) goto out; @@ -409,8 +410,7 @@ static int sysfs_release(struct inode *inode, struct file *filp) * return POLLERR|POLLPRI, and select will return the fd whether * it is waiting for read, write, or exceptions. * Once poll/select indicates that the value has changed, you - * need to close and re-open the file, as simply seeking and reading - * again will not get new data, or reset the state of 'poll'. + * need to close and re-open the file, or seek to 0 and read again. * Reminder: this only works for attributes which actively support * it, and it is not possible to test an attribute from userspace * to see if it supports poll (Neither 'poll' nor 'select' return |