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ehci: refactor pci quirk to use standard dmi_check_system method 

In commit 3610ea5397 (ehci: workaround for pci
quirk timeout on ExoPC), a workaround was added to skip the negociation for
the handoff of the EHCI controller.

Refactor the DMI detection code to use standard dmi_check_system function.

Signed-off-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Anisse Astier 2011-07-05 16:38:45 +02:00 committed by Greg Kroah-Hartman
parent cc62a7eb63
commit 03c7536218
1 changed files with 14 additions and 7 deletions
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21
drivers/usb/host/pci-quirks.c
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@ -507,20 +507,27 @@ static void __devinit quirk_usb_handoff_ohci(struct pci_dev *pdev)
iounmap(base);
}
static const struct dmi_system_id __initconst ehci_dmi_nohandoff_table[] = {
{
/* Pegatron Lucid (ExoPC) */
.matches = {
DMI_MATCH(DMI_BOARD_NAME, "EXOPG06411"),
DMI_MATCH(DMI_BIOS_VERSION, "Lucid-CE-133"),
},
},
{ }
};
static void __devinit ehci_bios_handoff(struct pci_dev *pdev,
void __iomem *op_reg_base,
u32 cap, u8 offset)
{
int try_handoff = 1, tried_handoff = 0;
/* The Pegatron Lucid (ExoPC) tablet sporadically waits for 90
* seconds trying the handoff on its unused controller. Skip
* it. */
/* The Pegatron Lucid tablet sporadically waits for 98 seconds trying
* the handoff on its unused controller. Skip it. */
if (pdev->vendor == 0x8086 && pdev->device == 0x283a) {
const char *dmi_bn = dmi_get_system_info(DMI_BOARD_NAME);
const char *dmi_bv = dmi_get_system_info(DMI_BIOS_VERSION);
if (dmi_bn && !strcmp(dmi_bn, "EXOPG06411") &&
dmi_bv && !strcmp(dmi_bv, "Lucid-CE-133"))
if (dmi_check_system(ehci_dmi_nohandoff_table))
try_handoff = 0;
}