diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2014-11-21 15:14:48 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2014-11-21 09:07:38 -0600 |
| commit | 7ad8096edfe0529eabb3ad466184c8fbd6134e1a (patch) | |
| tree | d9e479cd47769a80c56846db375b339f5df26e77 /drivers/usb/dwc2/platform.c | |
| parent | 4ace06e8b3c32d6a601474af31580bbc1027fa9f (diff) | |
usb: dwc2: gadget: add mutex to serialize init/deinit calls
This patch adds mutex, which protects initialization and
deinitialization procedures against suspend/resume methods. This mutex
will be needed by the updated suspend/resume calls, which tracks gadget
state.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc2/platform.c')
| -rw-r--r-- | drivers/usb/dwc2/platform.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 57eb8a3e022b..ec5658ac52ba 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -40,6 +40,7 @@ #include <linux/device.h> #include <linux/dma-mapping.h> #include <linux/of_device.h> +#include <linux/mutex.h> #include <linux/platform_device.h> #include <linux/usb/of.h> @@ -212,6 +213,7 @@ static int dwc2_driver_probe(struct platform_device *dev) hsotg->dr_mode = of_usb_get_dr_mode(dev->dev.of_node); spin_lock_init(&hsotg->lock); + mutex_init(&hsotg->init_mutex); retval = dwc2_gadget_init(hsotg, irq); if (retval) return retval; |