1 files changed, 42 insertions, 5 deletions

diff --git a/drivers/bcma/driver_chipcommon.c b/drivers/bcma/driver_chipcommon.c
index a4c3ebcc4c86..c9b63d9ff61d 100644
--- a/drivers/bcma/driver_chipcommon.c
+++ b/drivers/bcma/driver_chipcommon.c
@@ -30,6 +30,8 @@ void bcma_core_chipcommon_init(struct bcma_drv_cc *cc)
 	if (cc->setup_done)
 		return;
 
+	spin_lock_init(&cc->gpio_lock);
+
 	if (cc->core->id.rev >= 11)
 		cc->status = bcma_cc_read32(cc, BCMA_CC_CHIPSTAT);
 	cc->capabilities = bcma_cc_read32(cc, BCMA_CC_CAP);
@@ -84,28 +86,63 @@ u32 bcma_chipco_gpio_in(struct bcma_drv_cc *cc, u32 mask)
 
 u32 bcma_chipco_gpio_out(struct bcma_drv_cc *cc, u32 mask, u32 value)
 {
-	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
+	unsigned long flags;
+	u32 res;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUT, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
 }
 
 u32 bcma_chipco_gpio_outen(struct bcma_drv_cc *cc, u32 mask, u32 value)
 {
-	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
+	unsigned long flags;
+	u32 res;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOOUTEN, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
 }
 
 u32 bcma_chipco_gpio_control(struct bcma_drv_cc *cc, u32 mask, u32 value)
 {
-	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
+	unsigned long flags;
+	u32 res;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOCTL, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
 }
 EXPORT_SYMBOL_GPL(bcma_chipco_gpio_control);
 
 u32 bcma_chipco_gpio_intmask(struct bcma_drv_cc *cc, u32 mask, u32 value)
 {
-	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
+	unsigned long flags;
+	u32 res;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOIRQ, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
 }
 
 u32 bcma_chipco_gpio_polarity(struct bcma_drv_cc *cc, u32 mask, u32 value)
 {
-	return bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
+	unsigned long flags;
+	u32 res;
+
+	spin_lock_irqsave(&cc->gpio_lock, flags);
+	res = bcma_cc_write32_masked(cc, BCMA_CC_GPIOPOL, mask, value);
+	spin_unlock_irqrestore(&cc->gpio_lock, flags);
+
+	return res;
 }
 
 #ifdef CONFIG_BCMA_DRIVER_MIPS