greybus: pwm: replace pr_err with dev_err

Replace pr_err with the more descriptive dev_err. Also include the error
code on failure to register the PWM chip.

Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>

diff --git a/drivers/staging/greybus/pwm.c b/drivers/staging/greybus/pwm.c
index 5f33589..d91905f 100644 (file)
--- a/drivers/staging/greybus/pwm.c
+++ b/drivers/staging/greybus/pwm.c
@@ -204,7 +204,7 @@ static int gb_pwm_connection_init(struct gb_connection *connection)
 
        ret = pwmchip_add(pwm);
        if (ret) {
-               pr_err("Failed to register PWM\n");
+               dev_err(&connection->dev, "failed to register PWM: %d\n", ret);
                goto out_err;
        }