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| author | Colin Ian King <colin.king@canonical.com> | 2012-07-30 16:06:42 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-08-10 00:25:07 +0100 |
| commit | 0776e23d7f8f42487a5c0fd42679cef115add2bc (patch) | |
| tree | 0b05134a9856156978f6a93e546621d807207fdf /drivers/usb/early | |
| parent | 83358b9b1d3438293794224b14787a806031cf98 (diff) | |
| download | kernel_samsung_smdk4412-0776e23d7f8f42487a5c0fd42679cef115add2bc.zip kernel_samsung_smdk4412-0776e23d7f8f42487a5c0fd42679cef115add2bc.tar.gz kernel_samsung_smdk4412-0776e23d7f8f42487a5c0fd42679cef115add2bc.tar.bz2 | |
USB: echi-dbgp: increase the controller wait time to come out of halt.
commit f96a4216e85050c0a9d41a41ecb0ae9d8e39b509 upstream.
The default 10 microsecond delay for the controller to come out of
halt in dbgp_ehci_startup is too short, so increase it to 1 millisecond.
This is based on emperical testing on various USB debug ports on
modern machines such as a Lenovo X220i and an Ivybridge development
platform that needed to wait ~450-950 microseconds.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/usb/early')
| -rw-r--r-- | drivers/usb/early/ehci-dbgp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c index 1fc8f12..347bb05 100644 --- a/drivers/usb/early/ehci-dbgp.c +++ b/drivers/usb/early/ehci-dbgp.c @@ -450,7 +450,7 @@ static int dbgp_ehci_startup(void) writel(FLAG_CF, &ehci_regs->configured_flag); /* Wait until the controller is no longer halted */ - loop = 10; + loop = 1000; do { status = readl(&ehci_regs->status); if (!(status & STS_HALT)) |