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xhci: dbc: don't use generic xhci ring allocation functions for dbc.

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The generic xhci ring allocations code needs struct xhci_hcd pointer, and
it allocates memory for the rings from dma pools created for the xhci
device.

In order to decouple xhci and DbC we have to create our own ring allocation
and free routines for DbC

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20200723144530.9992-20-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman
2020-07-23 17:45:22 +03:00
committed by Greg Kroah-Hartman
parent cb66434e67
commit ac286428c6
3 changed files with 74 additions and 12 deletions
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4
drivers/usb/host/xhci-mem.c
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@@ -293,8 +293,8 @@ void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring)
kfree(ring);
}
static void xhci_initialize_ring_info(struct xhci_ring *ring,
unsigned int cycle_state)
void xhci_initialize_ring_info(struct xhci_ring *ring,
unsigned int cycle_state)
{
/* The ring is empty, so the enqueue pointer == dequeue pointer */
ring->enqueue = ring->first_seg->trbs;