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authorMathias Nyman <mathias.nyman@linux.intel.com>2014-11-27 18:19:15 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-12-02 16:14:29 -0800
commit4801d4ea559440b7d63babdac1b1b43a13ac7562 (patch)
tree7ccc41aa098857bf0973eee257e89789f5f18b71 /drivers/usb
parent69defe04ec825e42e0d719cca5a23f48b624bee9 (diff)
downloadop-kernel-dev-4801d4ea559440b7d63babdac1b1b43a13ac7562.zip
op-kernel-dev-4801d4ea559440b7d63babdac1b1b43a13ac7562.tar.gz
xhci: clear extra bits from slot context when setting max exit latency
If we need to change the max exit latency with a Evaluate Context command, we copy the old output slot context and use it as input context for the command. This also copies the dev_state bits which are supposed to be zero in the input slot context. Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/host/xhci.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 033b46c..0ea7e12 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -4009,6 +4009,7 @@ static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci,
slot_ctx = xhci_get_slot_ctx(xhci, command->in_ctx);
slot_ctx->dev_info2 &= cpu_to_le32(~((u32) MAX_EXIT));
slot_ctx->dev_info2 |= cpu_to_le32(max_exit_latency);
+ slot_ctx->dev_state = 0;
xhci_dbg_trace(xhci, trace_xhci_dbg_context_change,
"Set up evaluate context for LPM MEL change.");
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