Change in coreboot[master]: libpayload/xhci: Fix Slot State field width definition

[Nico Huber (Code Review)]

Nico Huber has submitted this change. ( https://review.coreboot.org/c/coreboot/+/45023 )

Change subject: libpayload/xhci: Fix Slot State field width definition
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libpayload/xhci: Fix Slot State field width definition

According to the xHCI spec, the Slot State field in the Slot Context
Data Structure is 5 bits wide. So, fix the code to match.

ref. xHCI spec 1.2
section 6.2.2, Figure 6-2: Slot Context Data Structure

BUG=none
TEST=xHCI compiles

Change-Id: I0ae735af3d0840aeee846fa939c37af9aea3dff1
Signed-off-by: Caveh Jalali 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45023
Reviewed-by: Julius Werner 
Reviewed-by: Nico Huber 
Tested-by: build bot (Jenkins) 
---
M payloads/libpayload/drivers/usb/xhci_private.h
1 file changed, 1 insertion(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Nico Huber: Looks good to me, approved
  Julius Werner: Looks good to me, approved

diff --git a/payloads/libpayload/drivers/usb/xhci_private.h b/payloads/libpayload/drivers/usb/xhci_private.h
index b4c8825..137c88e 100644
--- a/payloads/libpayload/drivers/usb/xhci_private.h
+++ b/payloads/libpayload/drivers/usb/xhci_private.h
@@ -204,7 +204,7 @@
 #define SC_UADDR_LEN		8
 #define SC_STATE_FIELD		f4		/* STATE - Slot State */
 #define SC_STATE_START		27
-#define SC_STATE_LEN		8
+#define SC_STATE_LEN		5
 #define SC_MASK(tok)		MASK(SC_##tok##_START, SC_##tok##_LEN)
 #define SC_GET(tok, sc)		(((sc)->SC_##tok##_FIELD & SC_MASK(tok)) \
    			 >> SC_##tok##_START)