diff options
| author | Majunath Goudar <csmanjuvijay@gmail.com> | 2013-11-13 17:40:20 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 17:53:18 -0800 |
| commit | 14982e31da83a818d03748a89957e47c139d8f07 (patch) | |
| tree | 7a4a500c9d894a07679105c89f54996f33d66601 /drivers/usb/host/ohci-exynos.c | |
| parent | 933bb1f0442ea1c15e7d9d23894d8dd4937bdf95 (diff) | |
USB: OHCI: Properly handle ohci-exynos suspend
Suspend scenario in case of ohci-exynos glue was not
properly handled as it was not suspending generic part
of ohci controller. Alan Stern suggested, properly handle
ohci-exynos suspend scenario.
Calling explicitly the ohci_suspend() routine in
exynos_ohci_suspend() will ensure proper handling of suspend
scenario.
Signed-off-by: Manjunath Goudar <csmanjuvijay@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ohci-exynos.c')
| -rw-r--r-- | drivers/usb/host/ohci-exynos.c | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c index 91ec9b2cd378..9897d70e4c15 100644 --- a/drivers/usb/host/ohci-exynos.c +++ b/drivers/usb/host/ohci-exynos.c @@ -191,23 +191,14 @@ static int exynos_ohci_suspend(struct device *dev) struct exynos_ohci_hcd *exynos_ohci = to_exynos_ohci(hcd); struct ohci_hcd *ohci = hcd_to_ohci(hcd); struct platform_device *pdev = to_platform_device(dev); + bool do_wakeup = device_may_wakeup(dev); unsigned long flags; - int rc = 0; + int rc = ohci_suspend(hcd, do_wakeup); - /* - * Root hub was already suspended. Disable irq emission and - * mark HW unaccessible, bail out if RH has been resumed. Use - * the spinlock to properly synchronize with possible pending - * RH suspend or resume activity. - */ - spin_lock_irqsave(&ohci->lock, flags); - if (ohci->rh_state != OHCI_RH_SUSPENDED && - ohci->rh_state != OHCI_RH_HALTED) { - rc = -EINVAL; - goto fail; - } + if (rc) + return rc; - clear_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags); + spin_lock_irqsave(&ohci->lock, flags); if (exynos_ohci->otg) exynos_ohci->otg->set_host(exynos_ohci->otg, &hcd->self); @@ -216,10 +207,9 @@ static int exynos_ohci_suspend(struct device *dev) clk_disable_unprepare(exynos_ohci->clk); -fail: spin_unlock_irqrestore(&ohci->lock, flags); - return rc; + return 0; } static int exynos_ohci_resume(struct device *dev) |