librumpxen_xendev: Do not test uio->uio_offset in xenbus_dev_write

This field is undefined on entry to f_write functions.

(The copying of the file offset to and from this field is done by
vn_read and vn_write, only for vnode entries, which this isn't.)

Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>

diff --git a/platform/xen/librumpxen_xendev/busdev.c b/platform/xen/librumpxen_xendev/busdev.c
index e5d7c7a27f89add73216e343eed63285120bc100..c9d0afc76869d44f9ffd1bef26133b0820996d76 100644 (file)
--- a/platform/xen/librumpxen_xendev/busdev.c
+++ b/platform/xen/librumpxen_xendev/busdev.c
@@ -116,9 +116,6 @@ xenbus_dev_write(struct file *fp, off_t *offset, struct uio *uio,
 
        DPRINTF(("/dev/xen/xenbus[%p,dd=%p]: write...\n",dc,dd));
 
-       if (uio->uio_offset < 0)
-               return EINVAL;
-
        mutex_enter(&dd->lock);
 
        for (;;) { /* keep reading more until we're done */