diff options
| author | Felipe Balbi <balbi@ti.com> | 2013-12-07 21:54:19 +0400 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-12-09 20:01:40 +0400 |
| commit | c6d7641470fed467777a886c64329fff8f5abf0b (patch) | |
| tree | e75c05e6f6c4b3bde1bb84d351a281b513c91e17 /drivers | |
| parent | 9ba96ae5074c9f15b357919e704ceba2bd34972d (diff) | |
| download | linux-c6d7641470fed467777a886c64329fff8f5abf0b.tar.xz | |
usb: dwc3: omap: remove unnecessary lock
the lock was only taken inside the hardirq
handler, which runs with IRQs disabled. There's
no chance of any race condition happening, even
on SMP machines. It's safe to remove that
spinlock.
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/dwc3-omap.c | 10 |
1 files changed, 0 insertions, 10 deletions
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index daab0ad10b25..b269dbd47fc4 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -20,7 +20,6 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <linux/interrupt.h> -#include <linux/spinlock.h> #include <linux/platform_device.h> #include <linux/platform_data/dwc3-omap.h> #include <linux/pm_runtime.h> @@ -120,9 +119,6 @@ #define USBOTGSS_UTMI_OTG_STATUS_VBUSVALID (1 << 1) struct dwc3_omap { - /* device lock */ - spinlock_t lock; - struct device *dev; int irq; @@ -280,8 +276,6 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) struct dwc3_omap *omap = _omap; u32 reg; - spin_lock(&omap->lock); - reg = dwc3_omap_read_irqmisc_status(omap); if (reg & USBOTGSS_IRQMISC_DMADISABLECLR) { @@ -322,8 +316,6 @@ static irqreturn_t dwc3_omap_interrupt(int irq, void *_omap) dwc3_omap_write_irq0_status(omap, reg); - spin_unlock(&omap->lock); - return IRQ_HANDLED; } @@ -449,8 +441,6 @@ static int dwc3_omap_probe(struct platform_device *pdev) } } - spin_lock_init(&omap->lock); - omap->dev = dev; omap->irq = irq; omap->base = base; |