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xhci: Rate-limit XHCI_TRUST_TX_LENGTH quirk warning. 

When we encounter an xHCI host that needs the XHCI_TRUST_TX_LENGTH
quirk, the xHCI driver ends up spewing messages about the quirk into
dmesg every time a short packet occurs.  Change the xHCI driver to
rate-limit such warnings.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Reported-by: Matthew Hall <mhall@mhcomputing.net>
Reported-by: Gary E. Miller <gem@rellim.com>
This commit is contained in:
Sarah Sharp 2012-07-25 10:52:45 -07:00
parent 5cb7df2b2d
commit 8202ce2e29
2 changed files with 4 additions and 2 deletions
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4
drivers/usb/host/xhci-ring.c
View File

@ -2073,8 +2073,8 @@ static int handle_tx_event(struct xhci_hcd *xhci,
if (xhci->quirks & XHCI_TRUST_TX_LENGTH)
trb_comp_code = COMP_SHORT_TX;
else
xhci_warn(xhci, "WARN Successful completion on short TX: "
"needs XHCI_TRUST_TX_LENGTH quirk?\n");
xhci_warn_ratelimited(xhci,
"WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?\n");
case COMP_SHORT_TX:
break;
case COMP_STOP:

2
drivers/usb/host/xhci.h
View File

@ -1537,6 +1537,8 @@ static inline struct usb_hcd *xhci_to_hcd(struct xhci_hcd *xhci)
dev_err(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
#define xhci_warn(xhci, fmt, args...) \
dev_warn(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
#define xhci_warn_ratelimited(xhci, fmt, args...) \
dev_warn_ratelimited(xhci_to_hcd(xhci)->self.controller , fmt , ## args)
/* TODO: copied from ehci.h - can be refactored? */
/* xHCI spec says all registers are little endian */