target/linux/mcs814x/patches-3.18/013-ohci_workarounds.patch

   1 --- a/drivers/usb/host/ohci.h
   2 +++ b/drivers/usb/host/ohci.h
   3 @@ -122,7 +122,7 @@ struct td {
   4         /* PSW is only for ISO.  Only 1 PSW entry is used, but on
   5          * big-endian PPC hardware that's the second entry.
   6          */
   7 -#define MAXPSW 2
   8 +#define MAXPSW 8
   9         __hc16          hwPSW [MAXPSW];
  10
  11         /* rest are purely for the driver's use */
  12 --- a/drivers/usb/host/ohci-hcd.c
  13 +++ b/drivers/usb/host/ohci-hcd.c
  14 @@ -441,6 +441,7 @@ static int ohci_init (struct ohci_hcd *o
  15  {
  16         int ret;
  17         struct usb_hcd *hcd = ohci_to_hcd(ohci);
  18 +       u32 hcca_area;
  19
  20         /* Accept arbitrarily long scatter-gather lists */
  21         hcd->self.sg_tablesize = ~0;
  22 @@ -501,11 +502,13 @@ static int ohci_init (struct ohci_hcd *o
  23                         (unsigned long) ohci);
  24         set_timer_slack(&ohci->io_watchdog, msecs_to_jiffies(20));
  25
  26 -       ohci->hcca = dma_alloc_coherent (hcd->self.controller,
  27 -                       sizeof(*ohci->hcca), &ohci->hcca_dma, GFP_KERNEL);
  28 +       hcca_area = ohci_readl(ohci, &ohci->regs->hcca);
  29 +       ohci->hcca = ioremap_nocache(hcca_area, sizeof *ohci->hcca);
  30         if (!ohci->hcca)
  31                 return -ENOMEM;
  32
  33 +       ohci->hcca_dma = hcca_area;
  34 +
  35         if ((ret = ohci_mem_init (ohci)) < 0)
  36                 ohci_stop (hcd);
  37         else {
  38 @@ -523,6 +526,7 @@ static int ohci_init (struct ohci_hcd *o
  39   */
  40  static int ohci_run (struct ohci_hcd *ohci)
  41  {
  42 +       int                     i = 0;
  43         u32                     mask, val;
  44         int                     first = ohci->fminterval == 0;
  45         struct usb_hcd          *hcd = ohci_to_hcd(ohci);
  46 @@ -573,6 +577,8 @@ static int ohci_run (struct ohci_hcd *oh
  47         msleep(val);
  48
  49         memset (ohci->hcca, 0, sizeof (struct ohci_hcca));
  50 +       for (i = 0; i < NUM_INTS; i++)
  51 +               ohci->hcca->int_table[i] = 0;
  52
  53         /* 2msec timelimit here means no irqs/preempt */
  54         spin_lock_irq (&ohci->lock);
  55 @@ -984,9 +990,6 @@ static void ohci_stop (struct usb_hcd *h
  56         remove_debug_files (ohci);
  57         ohci_mem_cleanup (ohci);
  58         if (ohci->hcca) {
  59 -               dma_free_coherent (hcd->self.controller,
  60 -                               sizeof *ohci->hcca,
  61 -                               ohci->hcca, ohci->hcca_dma);
  62                 ohci->hcca = NULL;
  63                 ohci->hcca_dma = 0;
  64         }