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xhci: fix SCT_FOR_CTX(p) macro

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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: Xenia Ragiadakou <burzalodowa@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Xenia Ragiadakou 2013-08-26 23:29:47 +03:00 committed by Sarah Sharp
parent 64ba419b7a
commit 63a67a72d6
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/host/xhci.h
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@ -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 */