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DM USB: xHCI: workaround for Stop Endpoint Command handling

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This patch is one workaround to resolve a crash issue for certain brand
touch screen (eGalaxTouch EXC7200-7368v1.01). The formal fix should
follow the xHCI spec to stop xfer and generate transfer completed event
trb prior to Stop Endpoint Command complete event trb. It should be a
big change and for short term, do nothing for the stop endpoint command
which is no other side effect be observed so far.

Tracked-On: #1413
Signed-off-by: Xiaoguang Wu <xiaoguang.wu@intel.com>
Reviewed-by: Liang Yang <liang3.yang@intel.com>
Acked-by: Yu Wang <yu1.wang@intel.com>
This commit is contained in:
Xiaoguang Wu
2018-10-18 23:09:50 +08:00
committed by Xie, Nanlin
parent ecf0585bf2
commit 6a9a46ac47
3 changed files with 8 additions and 20 deletions
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2
devicemodel/include/usb_core.h
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@@ -168,7 +168,6 @@ struct usb_data_xfer {
void *dev; /* struct pci_xhci_dev_emu *dev */
int epid; /* related endpoint id */
int pid; /* token id */
int reset; /* detect ep reset */
int status;
pthread_mutex_t mtx;
};
@@ -219,7 +218,6 @@ enum USB_ERRCODE {
memset((x)->data, 0, sizeof((x)->data)); \
(x)->ndata = 0; \
(x)->head = (x)->tail = 0; \
(x)->reset = 1; \
pthread_mutex_unlock((&(x)->mtx)); \
} while (0)