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authorPeter Chen <peter.chen@freescale.com>2013-09-10 15:34:39 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-09-25 17:20:52 -0700
commit4a29567b77bb87e8a488510f2d37c612e008d21b (patch)
tree3e8a0311cb399356bc8244a69159ecb6feaad596 /drivers/usb/chipidea
parent05c92da0c52494caf97d58be1b05b1f95a79ce4e (diff)
downloadop-kernel-dev-4a29567b77bb87e8a488510f2d37c612e008d21b.zip
op-kernel-dev-4a29567b77bb87e8a488510f2d37c612e008d21b.tar.gz
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. Signed-off-by: Peter Chen <peter.chen@freescale.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/chipidea')
-rw-r--r--drivers/usb/chipidea/udc.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 6b4c2f2..4ef4edf 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -1600,6 +1600,8 @@ 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);
}
}
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