forked from luck/tmp_suning_uos_patched
0e5668ed7b
commit 7441b273388b9a59d8387a03ffbbca9d5af6348c upstream.
The DWC3_EVENT_PENDING flag is used to protect against invalid call to
top-half interrupt handler, which can occur when there's a delay in
software detection of the interrupt line deassertion.
However, the clearing of this flag was done prior to unmasking the
interrupt line, creating opportunity where the top-half handler can
come. This breaks the serialization and creates a race between the
top-half and bottom-half handler, resulting in losing synchronization
between the controller and the driver when processing events.
To fix this, make sure the clearing of the DWC3_EVENT_PENDING is done at
the end of the bottom-half handler.
Fixes:
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||
|---|---|---|
| .. | ||
| core.c | ||
| core.h | ||
| debug.h | ||
| debugfs.c | ||
| drd.c | ||
| dwc3-exynos.c | ||
| dwc3-haps.c | ||
| dwc3-keystone.c | ||
| dwc3-meson-g12a.c | ||
| dwc3-of-simple.c | ||
| dwc3-omap.c | ||
| dwc3-pci.c | ||
| dwc3-qcom.c | ||
| dwc3-st.c | ||
| ep0.c | ||
| gadget.c | ||
| gadget.h | ||
| host.c | ||
| io.h | ||
| Kconfig | ||
| Makefile | ||
| trace.c | ||
| trace.h | ||
| ulpi.c | ||