4.18-stable review patch. If anyone has any objections, please let me know.
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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 @@ -312,7 +312,6 @@ static ssize_t mei_write(struct file *fi } }
- *offset = 0; cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, file); if (!cb) { rets = -ENOMEM;