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    SubjectRe: [PATCH] driver core: Add the ability to unbind drivers to devices from userspace
    Change log and signed off

    --
    Jon Smirl
    jonsmirl@gmail.com


    Remove leading and trailing whitespace when text sysfs attributes are
    assigned a value.


    Signed-off-by: Jon Smirl <jonsmirl@gmail.com>
    diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
    --- a/fs/sysfs/file.c
    +++ b/fs/sysfs/file.c
    @@ -6,6 +6,7 @@
    #include <linux/fsnotify.h>
    #include <linux/kobject.h>
    #include <linux/namei.h>
    +#include <linux/ctype.h>
    #include <asm/uaccess.h>
    #include <asm/semaphore.h>

    @@ -207,6 +208,28 @@ flush_write_buffer(struct dentry * dentr
    struct attribute * attr = to_attr(dentry);
    struct kobject * kobj = to_kobj(dentry->d_parent);
    struct sysfs_ops * ops = buffer->ops;
    + char *x, *y, *z;
    +
    + /* locate leading white space */
    + x = buffer->page;
    + while (isspace(*x) && (x - buffer->page < count))
    + x++;
    +
    + /* locate trailng white space */
    + z = y = x;
    + while (y - buffer->page < count) {
    + y++;
    + z = y;
    + while (isspace(*y) && (y - buffer->page < count)) {
    + y++;
    + }
    + }
    + count = z - x;
    +
    + /* strip the white space */
    + if (buffer->page != x)
    + memmove(buffer->page, x, count);
    + buffer->page[count] = '\0';

    return ops->store(kobj,attr,buffer->page,count);
    }
    -
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