diff options
| author | Ingo Molnar <mingo@kernel.org> | 2015-01-28 15:30:32 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-01-28 15:30:32 +0100 |
| commit | 41ca5d4e9be11ea6ae040b51d9628a189fd82896 (patch) | |
| tree | f9c35cc37b9622f6cccd91b94548f44b9a534029 /drivers/usb/host/pci-quirks.c | |
| parent | 0fcedc8631ec28ca25d3c0b116e8fa0c19dd5f6d (diff) | |
| parent | 3669ef9fa7d35f573ec9c0e0341b29251c2734a7 (diff) | |
Merge commit 3669ef9fa7d3 ("x86, tls: Interpret an all-zero struct user_desc as 'no segment'") into x86/asm
Pick up the latestest asm fixes before advancing it any further.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/usb/host/pci-quirks.c')
| -rw-r--r-- | drivers/usb/host/pci-quirks.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/drivers/usb/host/pci-quirks.c b/drivers/usb/host/pci-quirks.c index dd483c13565b..ce636466edb7 100644 --- a/drivers/usb/host/pci-quirks.c +++ b/drivers/usb/host/pci-quirks.c @@ -567,7 +567,8 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) { void __iomem *base; u32 control; - u32 fminterval; + u32 fminterval = 0; + bool no_fminterval = false; int cnt; if (!mmio_resource_enabled(pdev, 0)) @@ -577,6 +578,13 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) if (base == NULL) return; + /* + * ULi M5237 OHCI controller locks the whole system when accessing + * the OHCI_FMINTERVAL offset. + */ + if (pdev->vendor == PCI_VENDOR_ID_AL && pdev->device == 0x5237) + no_fminterval = true; + control = readl(base + OHCI_CONTROL); /* On PA-RISC, PDC can leave IR set incorrectly; ignore it there. */ @@ -615,7 +623,9 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) } /* software reset of the controller, preserving HcFmInterval */ - fminterval = readl(base + OHCI_FMINTERVAL); + if (!no_fminterval) + fminterval = readl(base + OHCI_FMINTERVAL); + writel(OHCI_HCR, base + OHCI_CMDSTATUS); /* reset requires max 10 us delay */ @@ -624,7 +634,9 @@ static void quirk_usb_handoff_ohci(struct pci_dev *pdev) break; udelay(1); } - writel(fminterval, base + OHCI_FMINTERVAL); + + if (!no_fminterval) + writel(fminterval, base + OHCI_FMINTERVAL); /* Now the controller is safely in SUSPEND and nothing can wake it up */ iounmap(base); |