OpenE2K
/
linux
6
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Char/Misc driver fixes for 3.17-rc3 

Here are 3 fixes for the mei and thunderbolt drivers that resolve some
 reported issues.
 
 All have been in linux-next for a while.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlQAuUIACgkQMUfUDdst+ymCoACg1ZeGWDpXP/r7Nm67J+yTSJqe
 cCAAoLzroT0nkWB1t9ILHIat7QLeFvHL
 =0fOz
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver fixes from Greg KH:
 "Here are 3 fixes for the mei and thunderbolt drivers that resolve some
  reported issues.

  All have been in linux-next for a while"

* tag 'char-misc-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  thunderbolt: Clear hops before overwriting
  mei: nfc: fix memory leak in error path
  mei: reset client state on queued connect request
This commit is contained in:
Linus Torvalds 2014-08-29 12:01:22 -07:00
parent 115619b34f 72ad366f68
commit 7acaf5202a
3 changed files with 26 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/misc/mei/client.c
View File

@ -601,6 +601,7 @@ int mei_cl_connect(struct mei_cl *cl, struct file *file)
cl->timer_count = MEI_CONNECT_TIMEOUT;
list_add_tail(&cb->list, &dev->ctrl_rd_list.list);
} else {
cl->state = MEI_FILE_INITIALIZING;
list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
}

11
drivers/misc/mei/nfc.c
View File

@ -342,9 +342,10 @@ static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length)
ndev = (struct mei_nfc_dev *) cldev->priv_data;
dev = ndev->cl->dev;
err = -ENOMEM;
mei_buf = kzalloc(length + MEI_NFC_HEADER_SIZE, GFP_KERNEL);
if (!mei_buf)
return -ENOMEM;
goto out;
hdr = (struct mei_nfc_hci_hdr *) mei_buf;
hdr->cmd = MEI_NFC_CMD_HCI_SEND;
@ -354,12 +355,9 @@ static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length)
hdr->data_size = length;
memcpy(mei_buf + MEI_NFC_HEADER_SIZE, buf, length);
err = __mei_cl_send(ndev->cl, mei_buf, length + MEI_NFC_HEADER_SIZE);
if (err < 0)
return err;
kfree(mei_buf);
goto out;
if (!wait_event_interruptible_timeout(ndev->send_wq,
ndev->recv_req_id == ndev->req_id, HZ)) {
@ -368,7 +366,8 @@ static int mei_nfc_send(struct mei_cl_device *cldev, u8 *buf, size_t length)
} else {
ndev->req_id++;
}
out:
kfree(mei_buf);
return err;
}

21
drivers/thunderbolt/path.c
View File

@ -150,7 +150,26 @@ int tb_path_activate(struct tb_path *path)
/* Activate hops. */
for (i = path->path_length - 1; i >= 0; i--) {
struct tb_regs_hop hop;
struct tb_regs_hop hop = { 0 };
/*
* We do (currently) not tear down paths setup by the firmeware.
* If a firmware device is unplugged and plugged in again then
* it can happen that we reuse some of the hops from the (now
* defunct) firmeware path. This causes the hotplug operation to
* fail (the pci device does not show up). Clearing the hop
* before overwriting it fixes the problem.
*
* Should be removed once we discover and tear down firmeware
* paths.
*/
res = tb_port_write(path->hops[i].in_port, &hop, TB_CFG_HOPS,
2 * path->hops[i].in_hop_index, 2);
if (res) {
__tb_path_deactivate_hops(path, i);
__tb_path_deallocate_nfc(path, 0);
goto err;
}
/* dword 0 */
hop.next_hop = path->hops[i].next_hop_index;