| From a103af1b64d74853a5e08ca6c86aeb0e5c6ca4f1 Mon Sep 17 00:00:00 2001 |
| From: Alexander Usyskin <alexander.usyskin@intel.com> |
| Date: Mon, 9 Jul 2018 12:21:44 +0300 |
| Subject: mei: don't update offset in write |
| |
| From: Alexander Usyskin <alexander.usyskin@intel.com> |
| |
| commit a103af1b64d74853a5e08ca6c86aeb0e5c6ca4f1 upstream. |
| |
| MEI enables writes of complete messages only |
| while read can be performed in parts, hence |
| write should not update the file offset to |
| not break interleaving partial reads with writes. |
| |
| Cc: <stable@vger.kernel.org> |
| Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> |
| Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/misc/mei/main.c | 1 - |
| 1 file changed, 1 deletion(-) |
| |
| --- a/drivers/misc/mei/main.c |
| +++ b/drivers/misc/mei/main.c |
| @@ -291,7 +291,6 @@ static ssize_t mei_write(struct file *fi |
| goto out; |
| } |
| |
| - *offset = 0; |
| cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, file); |
| if (!cb) { |
| rets = -ENOMEM; |
