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a guest Jun 11th, 2013 182 Never
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  1. diff --git a/drivers/i2c/busses/i2c-bcm2708.c b/drivers/i2c/busses/i2c-bcm2708.c
  2. index edc90c0..33f4e7d 100644
  3. --- a/drivers/i2c/busses/i2c-bcm2708.c
  4. +++ b/drivers/i2c/busses/i2c-bcm2708.c
  5. @@ -175,6 +175,11 @@ static irqreturn_t bcm2708_i2c_interrupt(int irq, void *dev_id)
  6.  
  7.         spin_lock(&bi->lock);
  8.  
  9. +       /* we may see camera interrupts on the "other" I2C channel
  10. +           Just return if we've not sent anything */
  11. +        if (!bi->nmsgs || !bi->msg )
  12. +               goto early_exit;
  13. +
  14.         s = bcm2708_rd(bi, BSC_S);
  15.  
  16.         if (s & (BSC_S_CLKT | BSC_S_ERR)) {
  17. @@ -208,6 +213,7 @@ static irqreturn_t bcm2708_i2c_interrupt(int irq, void *dev_id)
  18.                 handled = false;
  19.         }
  20.  
  21. +early_exit:
  22.         spin_unlock(&bi->lock);
  23.  
  24.         return handled ? IRQ_HANDLED : IRQ_NONE;
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