diff options
| author | Niklas Neronin <niklas.neronin@intel.com> | 2024-02-29 17:14:32 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-03-02 22:25:27 +0300 |
| commit | 74151b5349266bd1a3a8307a05449a22bf0ba9de (patch) | |
| tree | 22e042979d032bbe39afcffc38e89705a13501ae /drivers/usb/host/xhci.h | |
| parent | 06790c19086fe8f54afcd49184916132c7a8da4e (diff) | |
| download | linux-74151b5349266bd1a3a8307a05449a22bf0ba9de.tar.xz | |
xhci: save slot ID in struct 'xhci_port'
Slot ID is a index of a virtual device in struct 'xhci_hcd->devs[]'.
Previously, to get the slot ID associated with a port, we had to loop
through all devices and compare ports, which is very inefficient.
Instead, the slot ID (of the device which is directly connected to the
port), is added to the its corresponding 'xhci_port' struct. As a result,
finding the port's device is quick and easy.
Function 'xhci_find_slot_id_by_port()' is removed, as it is no longer
needed.
Signed-off-by: Niklas Neronin <niklas.neronin@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20240229141438.619372-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/xhci.h')
| -rw-r--r-- | drivers/usb/host/xhci.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index 634ab517a776..6f4bf98a6282 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -1462,6 +1462,8 @@ struct xhci_port { unsigned int lpm_incapable:1; unsigned long resume_timestamp; bool rexit_active; + /* Slot ID is the index of the device directly connected to the port */ + int slot_id; struct completion rexit_done; struct completion u3exit_done; }; @@ -1944,8 +1946,6 @@ unsigned long xhci_get_resuming_ports(struct usb_hcd *hcd); #endif /* CONFIG_PM */ u32 xhci_port_state_to_neutral(u32 state); -int xhci_find_slot_id_by_port(struct usb_hcd *hcd, struct xhci_hcd *xhci, - u16 port); void xhci_ring_device(struct xhci_hcd *xhci, int slot_id); /* xHCI contexts */ |