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Commit 63a67a72 authored by Xenia Ragiadakou's avatar Xenia Ragiadakou Committed by Sarah Sharp
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xhci: fix SCT_FOR_CTX(p) macro 



SCT_FOR_CTX(p) is defined as (((p) << 1) & 0x7) in which case if we want
to set the stream context type to SCT_SSA_256 i.e 0x7 (although secondary
stream arrays are not yet supported) using this macro definition we will
get actually 0x6 which is not what we want.

This patch fixes the above issue by defining the SCT_FOR_CTX(p) macro as
(((p) & 0x7) << 1)

Signed-off-by: default avatarXenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
parent 64ba419b

drivers/usb/host/xhci.h

+1 −1
Original line number Diff line number Diff line
@@ -752,7 +752,7 @@ struct xhci_stream_ctx { 
};



/* Stream Context Types (section 6.4.1) - bits 3:1 of stream ctx deq ptr */

#define	SCT_FOR_CTX(p)		(((p) << 1) & 0x7)

#define	SCT_FOR_CTX(p)		(((p) & 0x7) << 1)

/* Secondary stream array type, dequeue pointer is to a transfer ring */

#define	SCT_SEC_TR		0

/* Primary stream array type, dequeue pointer is to a transfer ring */