Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b653d47b authored by Alexander Usyskin's avatar Alexander Usyskin Committed by Greg Kroah-Hartman
Browse files

mei: don't update offset in write 



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: default avatarAlexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent e8e519f8

drivers/misc/mei/main.c

+0 −1
Original line number Diff line number Diff line
@@ -304,7 +304,6 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf, 
		goto out;

	}



	*offset = 0;

	cb = mei_cl_alloc_cb(cl, length, MEI_FOP_WRITE, file);

	if (!cb) {

		rets = -ENOMEM;