this will make sure that we execute at least once. No functional changes otherwise. Signed-off-by: Felipe Balbi <balbi@xxxxxx> --- drivers/i2c/busses/i2c-omap.c | 21 +++++++++++++++------ 1 file changed, 15 insertions(+), 6 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 381bb36..f978b14 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -870,20 +870,29 @@ omap_i2c_isr(int this_irq, void *dev_id) struct omap_i2c_dev *dev = dev_id; u16 bits; u16 stat; - int err, count = 0; + int err = 0, count = 0; if (pm_runtime_suspended(dev->dev)) return IRQ_NONE; - bits = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG); - while ((stat = (omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG))) & bits) { + do { + bits = omap_i2c_read_reg(dev, OMAP_I2C_IE_REG); + stat = omap_i2c_read_reg(dev, OMAP_I2C_STAT_REG); + stat &= bits; + + if (!stat) { + /* my work here is done */ + omap_i2c_complete_cmd(dev, err); + return IRQ_HANDLED; + } + dev_dbg(dev->dev, "IRQ (ISR = 0x%04x)\n", stat); if (count++ == 100) { dev_warn(dev->dev, "Too much work in one IRQ\n"); - break; + omap_i2c_complete_cmd(dev, err); + return IRQ_HANDLED; } - err = 0; complete: /* * Ack the stat in one go, but [R/X]DR and [R/X]RDY should be @@ -987,7 +996,7 @@ complete: dev_err(dev->dev, "Transmit underflow\n"); dev->cmd_err |= OMAP_I2C_STAT_XUDF; } - } + } while (stat); return count ? IRQ_HANDLED : IRQ_NONE; } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html