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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-24 22:34:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-02-24 22:34:54 +0100 |
| commit | 58e868be77bda526cc8d4264488ed393bc607720 (patch) | |
| tree | f95692355ca78239815c1df58fe2fee7dc79d80d /drivers/usb/musb/musb_virthub.c | |
| parent | Merge tag 'iio-fixes-for-3.14c' of git://git.kernel.org/pub/scm/linux/kernel/... (diff) | |
| parent | Linux 3.14-rc4 (diff) | |
| download | linux-58e868be77bda526cc8d4264488ed393bc607720.tar.xz linux-58e868be77bda526cc8d4264488ed393bc607720.zip | |
Merge 3.14-rc4 into char-misc-linus
Merge this to catch up with the other patches sent upstream.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb/musb_virthub.c')
| -rw-r--r-- | drivers/usb/musb/musb_virthub.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/drivers/usb/musb/musb_virthub.c b/drivers/usb/musb/musb_virthub.c index eb634433ef09..e2d2d8c9891b 100644 --- a/drivers/usb/musb/musb_virthub.c +++ b/drivers/usb/musb/musb_virthub.c @@ -135,7 +135,8 @@ void musb_port_suspend(struct musb *musb, bool do_suspend) /* later, GetPortStatus will stop RESUME signaling */ musb->port1_status |= MUSB_PORT_STAT_RESUME; - schedule_delayed_work(&musb->finish_resume_work, 20); + schedule_delayed_work(&musb->finish_resume_work, + msecs_to_jiffies(20)); } } @@ -158,7 +159,6 @@ void musb_port_reset(struct musb *musb, bool do_reset) */ power = musb_readb(mbase, MUSB_POWER); if (do_reset) { - /* * If RESUME is set, we must make sure it stays minimum 20 ms. * Then we must clear RESUME and wait a bit to let musb start @@ -167,11 +167,22 @@ void musb_port_reset(struct musb *musb, bool do_reset) * detected". */ if (power & MUSB_POWER_RESUME) { - while (time_before(jiffies, musb->rh_timer)) - msleep(1); + long remain = (unsigned long) musb->rh_timer - jiffies; + + if (musb->rh_timer > 0 && remain > 0) { + /* take into account the minimum delay after resume */ + schedule_delayed_work( + &musb->deassert_reset_work, remain); + return; + } + musb_writeb(mbase, MUSB_POWER, - power & ~MUSB_POWER_RESUME); - msleep(1); + power & ~MUSB_POWER_RESUME); + + /* Give the core 1 ms to clear MUSB_POWER_RESUME */ + schedule_delayed_work(&musb->deassert_reset_work, + msecs_to_jiffies(1)); + return; } power &= 0xf0; @@ -180,7 +191,8 @@ void musb_port_reset(struct musb *musb, bool do_reset) musb->port1_status |= USB_PORT_STAT_RESET; musb->port1_status &= ~USB_PORT_STAT_ENABLE; - schedule_delayed_work(&musb->deassert_reset_work, 50); + schedule_delayed_work(&musb->deassert_reset_work, + msecs_to_jiffies(50)); } else { dev_dbg(musb->controller, "root port reset stopped\n"); musb_writeb(mbase, MUSB_POWER, |