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xhci: add port and bus number to port dynamic debugging

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Improve port related dynamic debugging by printing out the bus number,
port number and port status register content each time there is a port
related debug messages.

Use the same port numbering method as usbcore to simplify debugging.
i.e. starting with port number 1.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman
2019-04-26 16:23:30 +03:00
committed by Greg Kroah-Hartman
parent 33e39350eb
commit d70d5a8466
3 changed files with 48 additions and 25 deletions
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17
drivers/usb/host/xhci.c
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@@ -893,7 +893,7 @@ static void xhci_disable_port_wake_on_bits(struct xhci_hcd *xhci)
struct xhci_port **ports;
int port_index;
unsigned long flags;
u32 t1, t2;
u32 t1, t2, portsc;
spin_lock_irqsave(&xhci->lock, flags);
@@ -902,10 +902,15 @@ static void xhci_disable_port_wake_on_bits(struct xhci_hcd *xhci)
ports = xhci->usb3_rhub.ports;
while (port_index--) {
t1 = readl(ports[port_index]->addr);
portsc = t1;
t1 = xhci_port_state_to_neutral(t1);
t2 = t1 & ~PORT_WAKE_BITS;
if (t1 != t2)
if (t1 != t2) {
writel(t2, ports[port_index]->addr);
xhci_dbg(xhci, "disable wake bits port %d-%d, portsc: 0x%x, write: 0x%x\n",
xhci->usb3_rhub.hcd->self.busnum,
port_index + 1, portsc, t2);
}
}
/* disable usb2 ports Wake bits */
@@ -913,12 +918,16 @@ static void xhci_disable_port_wake_on_bits(struct xhci_hcd *xhci)
ports = xhci->usb2_rhub.ports;
while (port_index--) {
t1 = readl(ports[port_index]->addr);
portsc = t1;
t1 = xhci_port_state_to_neutral(t1);
t2 = t1 & ~PORT_WAKE_BITS;
if (t1 != t2)
if (t1 != t2) {
writel(t2, ports[port_index]->addr);
xhci_dbg(xhci, "disable wake bits port %d-%d, portsc: 0x%x, write: 0x%x\n",
xhci->usb2_rhub.hcd->self.busnum,
port_index + 1, portsc, t2);
}
}
spin_unlock_irqrestore(&xhci->lock, flags);
}