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author | Arnd Bergmann <arnd@arndb.de> | 2014-04-24 23:46:58 +0200 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2014-04-24 23:46:58 +0200 |
commit | 1fc52762e33cc905331681364d79424d921f60f2 (patch) | |
tree | d7347407cbbdb7a0565e3b4d09aaf40f0705491a /drivers/usb/host/ehci-tegra.c | |
parent | 9ef1af9ea28c23d0eaed97f7f5142788b6cf570a (diff) | |
parent | cf2e0a73ca9ad376825c013ebaa145608abc27d7 (diff) | |
download | linux-1fc52762e33cc905331681364d79424d921f60f2.tar.bz2 |
Merge tag 'vexpress/fixes-for-3.15' of git://git.linaro.org/people/pawel.moll/linux into fixes
ARM Versatile Express fixes for 3.15
This series contains straight-forward fixes for different
Versatile Express infrastructure drivers:
- NULL pointer dereference on the error path in the clk driver
- out of boundary array access in the dcscb driver
- broken restart/power off implementation
- mis-interpreted voltage unit in the spc driver
* tag 'vexpress/fixes-for-3.15' of git://git.linaro.org/people/pawel.moll/linux:
ARM: vexpress/TC2: Convert OPP voltage to uV before storing
power/reset: vexpress: Fix restart/power off operation
arm/mach-vexpress: array accessed out of bounds
clk: vexpress: NULL dereference on error path
Includes an update to 3.15-rc2
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/usb/host/ehci-tegra.c')
-rw-r--r-- | drivers/usb/host/ehci-tegra.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 27ac6ad53c3d..7ef00ecb0da1 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -509,8 +509,31 @@ static struct platform_driver tegra_ehci_driver = { } }; +static int tegra_ehci_reset(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int retval; + int txfifothresh; + + retval = ehci_setup(hcd); + if (retval) + return retval; + + /* + * We should really pull this value out of tegra_ehci_soc_config, but + * to avoid needing access to it, make use of the fact that Tegra20 is + * the only one so far that needs a value of 10, and Tegra20 is the + * only one which doesn't set has_hostpc. + */ + txfifothresh = ehci->has_hostpc ? 0x10 : 10; + ehci_writel(ehci, txfifothresh << 16, &ehci->regs->txfill_tuning); + + return 0; +} + static const struct ehci_driver_overrides tegra_overrides __initconst = { .extra_priv_size = sizeof(struct tegra_ehci_hcd), + .reset = tegra_ehci_reset, }; static int __init ehci_tegra_init(void) |