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4a71fcb8ac
A recent optimization was made so that a request put on the
pending_list wouldn't get mapped for DMA until just before
preparing a TRB for it. However, this poses a problem in case
the request is dequeued or the endpoint is disabled before the
mapping is done as that would lead to dwc3_gadget_giveback()
unconditionally calling usb_gadget_unmap_request_for_dev() with
an invalid request->dma handle. Depending on the platform's DMA
implementation the unmap operation could result in a panic.
Since we know a successful mapping is a prerequisite for getting
a TRB, the unmap can be conditionally called only when req->trb
is non-NULL.
Fixes:
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.. | ||
core.c | ||
core.h | ||
debug.h | ||
debugfs.c | ||
drd.c | ||
dwc3-exynos.c | ||
dwc3-keystone.c | ||
dwc3-of-simple.c | ||
dwc3-omap.c | ||
dwc3-pci.c | ||
dwc3-st.c | ||
ep0.c | ||
gadget.c | ||
gadget.h | ||
host.c | ||
io.h | ||
Kconfig | ||
Makefile | ||
trace.c | ||
trace.h | ||
ulpi.c |