mfd: twl4030-irq: Check return value from twl_i2c_write() - warn() on failure

In the original code a return value variable was provided, but it
was never checked and the user was never informed of failure.  Now
it is and they are.

Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
index b1dabba763cf..1b772ef761cb 100644
--- a/drivers/mfd/twl4030-irq.c
+++ b/drivers/mfd/twl4030-irq.c
@@ -396,13 +396,17 @@ static int twl4030_init_sih_modules(unsigned line)
                         status = twl_i2c_read(sih->module, rxbuf,
                                 sih->mask[line].isr_offset, sih->bytes_ixr);
                         if (status < 0)
-                                pr_err("twl4030: err %d initializing %s %s\n",
+                                pr_warn("twl4030: err %d initializing %s %s\n",
                                         status, sih->name, "ISR");
 
-                        if (!sih->set_cor)
+                        if (!sih->set_cor) {
                                 status = twl_i2c_write(sih->module, buf,
                                         sih->mask[line].isr_offset,
                                         sih->bytes_ixr);
+                                if (status < 0)
+                                        pr_warn("twl4030: write failed: %d\n",
+                                                status);
+                        }
                         /*
                          * else COR=1 means read sufficed.
                          * (for most SIH modules...)