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Commit 4e6a1ee7 authored by Takashi Iwai's avatar Takashi Iwai Committed by Sarah Sharp
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xhci: Add quirks module option 



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: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
parent 3d724fa5

drivers/usb/host/xhci.c

+6 −0
Original line number Diff line number Diff line
@@ -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
@@ -4770,6 +4774,8 @@ int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) 
	xhci->hcc_params = readl(&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