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mt76: mt7663u: fix memory leaks in mt7663u_probe

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Fix the two following memory leaks in mt7663u_probe:
1- if device power-own times out, remove ieee80211 hw device.
2- if mt76u queues allocation fails, remove pending urbs.

Fixes: eb99cc95c3 ("mt76: mt7615: introduce mt7663u support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/e4098f0c8a9ac51997de07f38c2bcdf7042d6db1.1592755166.git.lorenzo@kernel.org
This commit is contained in:
Lorenzo Bianconi
2020-06-21 18:03:38 +02:00
committed by Kalle Valo
parent 4ac668a3b8
commit b1e79d1055
2 changed files with 23 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/wireless/mediatek/mt76/mt7615/usb.c
View File

@@ -329,25 +329,26 @@ static int mt7663u_probe(struct usb_interface *usb_intf,
if (!mt76_poll_msec(dev, MT_CONN_ON_MISC, MT_TOP_MISC2_FW_PWR_ON,
FW_STATE_PWR_ON << 1, 500)) {
dev_err(dev->mt76.dev, "Timeout for power on\n");
return -EIO;
ret = -EIO;
goto error;
}
alloc_queues:
ret = mt76u_alloc_mcu_queue(&dev->mt76);
if (ret)
goto error;
goto error_free_q;
ret = mt76u_alloc_queues(&dev->mt76);
if (ret)
goto error;
goto error_free_q;
ret = mt7663u_register_device(dev);
if (ret)
goto error_freeq;
goto error_free_q;
return 0;
error_freeq:
error_free_q:
mt76u_queues_deinit(&dev->mt76);
error:
mt76u_deinit(&dev->mt76);

22
drivers/net/wireless/mediatek/mt76/usb.c
View File

@@ -1067,11 +1067,16 @@ static int mt76u_alloc_tx(struct mt76_dev *dev)
static void mt76u_free_tx(struct mt76_dev *dev)
{
struct mt76_queue *q;
int i, j;
int i;
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
struct mt76_queue *q;
int j;
q = dev->q_tx[i].q;
if (!q)
continue;
for (j = 0; j < q->ndesc; j++)
usb_free_urb(q->entry[j].urb);
}
@@ -1079,17 +1084,22 @@ static void mt76u_free_tx(struct mt76_dev *dev)
void mt76u_stop_tx(struct mt76_dev *dev)
{
struct mt76_queue_entry entry;
struct mt76_queue *q;
int i, j, ret;
int ret;
ret = wait_event_timeout(dev->tx_wait, !mt76_has_tx_pending(&dev->phy),
HZ / 5);
if (!ret) {
struct mt76_queue_entry entry;
struct mt76_queue *q;
int i, j;
dev_err(dev->dev, "timed out waiting for pending tx\n");
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
q = dev->q_tx[i].q;
if (!q)
continue;
for (j = 0; j < q->ndesc; j++)
usb_kill_urb(q->entry[j].urb);
}
@@ -1101,6 +1111,8 @@ void mt76u_stop_tx(struct mt76_dev *dev)
*/
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
q = dev->q_tx[i].q;
if (!q)
continue;
/* Assure we are in sync with killed tasklet. */
spin_lock_bh(&q->lock);