It makes easier for debugging some hardware specific issues.
Note that this option won't override the value to be set. That is,
you can turn quirks on by this option but cannot turn them off if set
by the driver.
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
---
I noticed the lack of quirks module option during investigating the
recent bug report for my Haswell S5 fix quirk
https://bugzilla.kernel.org/show_bug.cgi?id=66171
drivers/usb/host/xhci.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
index 4265b48856f6..08a4fd458d22 100644
--- a/drivers/usb/host/xhci.c
+++ b/drivers/usb/host/xhci.c
@@ -40,6 +40,10 @@ static int link_quirk;
module_param(link_quirk, int, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(link_quirk, "Don't clear the chain bit on a link TRB");
+static unsigned int quirks;
+module_param(quirks, uint, S_IRUGO);
+MODULE_PARM_DESC(quirks, "Bit flags for quirks to be enabled as default");
+
/* TODO: copied from ehci-hcd.c - can this be refactored? */
/*
* xhci_handshake - spin reading hc until handshake completes or fails
@@ -4760,6 +4764,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks)
xhci->hcc_params = xhci_readl(xhci, &xhci->cap_regs->hcc_params);
xhci_print_registers(xhci);
+ xhci->quirks = quirks;
+
get_quirks(dev, xhci);
/* In xhci controllers which follow xhci 1.0 spec gives a spurious
--
1.8.5
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