On 07/23/2013 09:08 PM, Graeme Gregory wrote:
On 23/07/13 17:07, Grygorii Strashko wrote:
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@xxxxxx>
---
drivers/mfd/twl6030-irq.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/mfd/twl6030-irq.c b/drivers/mfd/twl6030-irq.c
index b6030d9..790cc28 100644
--- 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);
+
You can save two i2c writes here for slightly faster initialisation,
only one of the REG_INT_STS_A registers needs to be written to clear
them all. As per the irq handling routine comment.
Good point. thanks
+ if (status < 0) {
+ dev_err(dev, "I2C err writing TWL_MODULE_PIH: %d\n", status);
+ return status;
+ }
twl6030_irq_base = irq_base;
Graeme
Regards,
- grygorii
--
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
