diff options
| author | Peter Chen <peter.chen@freescale.com> | 2013-09-10 15:15:43 +0800 |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2013-09-12 13:43:18 +0800 |
| commit | 42cf91aeea538459c3f45b2fe0b2460fae001ec5 (patch) | |
| tree | 38a0d0a6ac4cf3ecb65e07ec3f7e31c724a79b3a | |
| parent | 1f4b3a04f796b62727d4c8b07ff1d1cf9e08fc1a (diff) | |
ENGR00279194 chipidea: udc: free pending TD at removal procedure
There is a pending TD which is not freed after request finishes,
we do this due to a controller bug. This TD needs to be freed when
the driver is removed. It prints below error message when unload
chipidea driver at current code:
"ci_hdrc ci_hdrc.0: dma_pool_destroy ci_hw_td, b0001000 busy"
It indicates the buffer at dma pool are still in use.
This commit will free the pending TD at driver's removal procedure,
it can fix the problem described above.
Acked-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index 2ea58715dd56..b157c95f7a36 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -1604,6 +1604,8 @@ static void destroy_eps(struct ci_hdrc *ci) for (i = 0; i < ci->hw_ep_max; i++) { struct ci_hw_ep *hwep = &ci->ci_hw_ep[i]; + if (hwep->pending_td) + free_pending_td(hwep); dma_pool_free(ci->qh_pool, hwep->qh.ptr, hwep->qh.dma); } } |