mfd: twl6030-irq: Add error check when IRQs are masked initially

Add a missed check for errors when TWL IRQs are masked
initially on probe and report an error in case of failure.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Graeme Gregory <gg@slimlogic.co.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c
index 1606ced..f7da261 100644 (file)
--- a/drivers/mfd/twl6030-irq.c
+++ b/drivers/mfd/twl6030-irq.c
@@ -313,7 +313,7 @@ int twl6030_init_irq(struct device *dev, int irq_num)
        struct                  device_node *node = dev->of_node;
        int                     nr_irqs, irq_base, irq_end;
        static struct irq_chip  twl6030_irq_chip;
-       int                     status = 0;
+       int                     status;
        int                     i;
        u8                      mask[3];
 
@@ -335,11 +335,16 @@ int twl6030_init_irq(struct device *dev, int irq_num)
        mask[2] = 0xFF;
 
        /* mask all int lines */
-       twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_MSK_LINE_A, 3);
+       status = twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_MSK_LINE_A, 3);
        /* mask all int sts */
-       twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_MSK_STS_A, 3);
+       status |= twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_MSK_STS_A, 3);
        /* clear INT_STS_A,B,C */
-       twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_STS_A, 3);
+       status |= twl_i2c_write(TWL_MODULE_PIH, &mask[0], REG_INT_STS_A, 3);
+
+       if (status < 0) {
+               dev_err(dev, "I2C err writing TWL_MODULE_PIH: %d\n", status);
+               return status;
+       }
 
        twl6030_irq_base = irq_base;