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| author | Sarah Bailey <saharabeara@gmail.com> | 2007-02-22 22:36:21 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-02-23 15:03:46 -0800 |
| commit | 50f97a1f829d26e01ae8bb33cd1384cf0a5e046f (patch) | |
| tree | eee3da686667a2e532281622ec85d0eaacbcfbe2 | |
| parent | 4ef2e23f03c597e2073b649e7287b840f8fb9274 (diff) | |
| download | linux-50f97a1f829d26e01ae8bb33cd1384cf0a5e046f.tar.gz linux-50f97a1f829d26e01ae8bb33cd1384cf0a5e046f.tar.bz2 linux-50f97a1f829d26e01ae8bb33cd1384cf0a5e046f.zip | |
gadgetfs: Fixed bug in ep_aio_read_retry.
I don't think the current code works with multiple iovecs.
The original would just copy the first part of priv->buf
over and over into multiple iovecs.
Signed-off-by: Sarah Bailey <saharabeara@gmail.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/gadget/inode.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/usb/gadget/inode.c b/drivers/usb/gadget/inode.c index 34296e79edcf..188c74a95216 100644 --- a/drivers/usb/gadget/inode.c +++ b/drivers/usb/gadget/inode.c @@ -553,6 +553,7 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb) { struct kiocb_priv *priv = iocb->private; ssize_t len, total; + void *to_copy; int i; /* we "retry" to get the right mm context for this: */ @@ -560,10 +561,11 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb) /* copy stuff into user buffers */ total = priv->actual; len = 0; + to_copy = priv->buf; for (i=0; i < priv->nr_segs; i++) { ssize_t this = min((ssize_t)(priv->iv[i].iov_len), total); - if (copy_to_user(priv->iv[i].iov_base, priv->buf, this)) { + if (copy_to_user(priv->iv[i].iov_base, to_copy, this)) { if (len == 0) len = -EFAULT; break; @@ -571,6 +573,7 @@ static ssize_t ep_aio_read_retry(struct kiocb *iocb) total -= this; len += this; + to_copy += this; if (total == 0) break; } |