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xhci: improve PORTSC register debugging output

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Print the full hex value of PORTSC register in addition to the human
readable decoded string while debugging PORTSC value.

If PORTSC value is 0xffffffff then don't decode it.
This lets us inspect Rsvd bits of PORTSC.
Same is done for USBSTS register values.

Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20240429140245.3955523-9-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mathias Nyman 2024-04-29 17:02:35 +03:00 committed by Greg Kroah-Hartman
parent 0c95950894
commit 15a27970e5
1 changed files with 6 additions and 1 deletions
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7
drivers/usb/host/xhci.h
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@ -2336,7 +2336,12 @@ static inline const char *xhci_decode_portsc(char *str, u32 portsc)
{
int ret;
ret = sprintf(str, "%s %s %s Link:%s PortSpeed:%d ",
ret = sprintf(str, "0x%08x ", portsc);
if (portsc == ~(u32)0)
return str;
ret += sprintf(str + ret, "%s %s %s Link:%s PortSpeed:%d ",
portsc & PORT_POWER ? "Powered" : "Powered-off",
portsc & PORT_CONNECT ? "Connected" : "Not-connected",
portsc & PORT_PE ? "Enabled" : "Disabled",