diff options
| author | vjagadish <vjagadish@nvidia.com> | 2011-10-17 14:14:58 +0530 |
|---|---|---|
| committer | Lokesh Pathak <lpathak@nvidia.com> | 2011-11-09 07:31:29 -0800 |
| commit | 0ff343ce7069304a57244bf4844617a078b3632c (patch) | |
| tree | b14b8370807b2d83b2878c4f1033c88a425e0e24 | |
| parent | d1aabf0354c997865bffd8b91ff0bdeac5dd4018 (diff) | |
usb: host: tegra: Fix for possible race condition in timer handler
Acquire the spin lock before disabling the clock.
Bug 876433
Reviewed-on: http://git-master/r/59136
(cherry picked from commit 38dc376fc332bdc34a9ee9fd9385fd447a0f343d)
Change-Id: Ib2f75f4c16d5ad56e698e14b335f2483f0ece429
Reviewed-on: http://git-master/r/62324
Reviewed-by: Lokesh Pathak <lpathak@nvidia.com>
Tested-by: Lokesh Pathak <lpathak@nvidia.com>
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 92ff80a044a2..2d2747a25f71 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -857,12 +857,12 @@ static void clk_timer_work_handler(struct work_struct* clk_timer_work) { spin_unlock_irqrestore(&tegra->ehci->lock, flags); if (timer_event) { - clk_disable(tegra->emc_clk); - clk_disable(tegra->sclk_clk); spin_lock_irqsave(&tegra->ehci->lock, flags); tegra->clock_enabled = 0; tegra->timer_event = 0; spin_unlock_irqrestore(&tegra->ehci->lock, flags); + clk_disable(tegra->emc_clk); + clk_disable(tegra->sclk_clk); return; } |