git.maemo.org Git - kernel-bfs/blob - kernel-bfs-2.6.28/debian/patches/class10sd_dto14_fix.diff

   1 --- kernel-2.6.28/drivers/mmc/host/omap_hsmmc.c 2011-04-28 23:06:37.000000000 +0200
   2 +++ kernel-2.6.28.new/drivers/mmc/host/omap_hsmmc.c     2011-05-05 22:18:25.174891197 +0200
   3 @@ -958,34 +958,9 @@ static void set_data_timeout(struct omap
   4                              unsigned int timeout_ns,
   5                              unsigned int timeout_clks)
   6  {
   7 -       unsigned int timeout, cycle_ns;
   8 -       uint32_t reg, clkd, dto = 0;
   9 +       uint32_t reg, dto = 14;
  10
  11         reg = OMAP_HSMMC_READ(host->base, SYSCTL);
  12 -       clkd = (reg & CLKD_MASK) >> CLKD_SHIFT;
  13 -       if (clkd == 0)
  14 -               clkd = 1;
  15 -
  16 -       cycle_ns = 1000000000 / (clk_get_rate(host->fclk) / clkd);
  17 -       timeout = timeout_ns / cycle_ns;
  18 -       timeout += timeout_clks;
  19 -       if (timeout) {
  20 -               while ((timeout & 0x80000000) == 0) {
  21 -                       dto += 1;
  22 -                       timeout <<= 1;
  23 -               }
  24 -               dto = 31 - dto;
  25 -               timeout <<= 1;
  26 -               if (timeout && dto)
  27 -                       dto += 1;
  28 -               if (dto >= 13)
  29 -                       dto -= 13;
  30 -               else
  31 -                       dto = 0;
  32 -               if (dto > 14)
  33 -                       dto = 14;
  34 -       }
  35 -
  36         reg &= ~DTO_MASK;
  37         reg |= dto << DTO_SHIFT;
  38         OMAP_HSMMC_WRITE(host->base, SYSCTL, reg);