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Old 06-27-2011, 02:20 PM
AceLan Kao
 
Default xhci: Add defines for hardcoded slot states

From: Maarten Lankhorst <m.b.lankhorst@gmail.com>

This needs to be added to the stable trees back to 2.6.34 to support an
upcoming bug fix.

Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable@kernel.org
(cherry picked from commit e2b0217715c6d10379d94bdfe5560af96eecbb7c)

BugLink: https://bugs.launchpad.net/bugs/802541

Signed-off-by: AceLan Kao <acelan.kao@canonical.com>
---
drivers/usb/host/xhci-dbg.c | 10 +++++-----
drivers/usb/host/xhci.h | 5 +++++
2 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c
index 0231814..99ac7de 100644
--- a/drivers/usb/host/xhci-dbg.c
+++ b/drivers/usb/host/xhci-dbg.c
@@ -436,14 +436,14 @@ char *xhci_get_slot_state(struct xhci_hcd *xhci,
{
struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx);

- switch (GET_SLOT_STATE(slot_ctx->dev_state)) {
- case 0:
+ switch (GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state))) {
+ case SLOT_STATE_ENABLED:
return "enabled/disabled";
- case 1:
+ case SLOT_STATE_DEFAULT:
return "default";
- case 2:
+ case SLOT_STATE_ADDRESSED:
return "addressed";
- case 3:
+ case SLOT_STATE_CONFIGURED:
return "configured";
default:
return "reserved";
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h
index 62bc1bc..1d9943e 100644
--- a/drivers/usb/host/xhci.h
+++ b/drivers/usb/host/xhci.h
@@ -556,6 +556,11 @@ struct xhci_slot_ctx {
#define SLOT_STATE (0x1f << 27)
#define GET_SLOT_STATE(p) (((p) & (0x1f << 27)) >> 27)

+#define SLOT_STATE_DISABLED 0
+#define SLOT_STATE_ENABLED SLOT_STATE_DISABLED
+#define SLOT_STATE_DEFAULT 1
+#define SLOT_STATE_ADDRESSED 2
+#define SLOT_STATE_CONFIGURED 3

/**
* struct xhci_ep_ctx
--
1.7.4.1


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