diff options
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index bf37cdf43fa..5aac0ec3636 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -423,27 +423,25 @@ static int ap_uevent (struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size) { struct ap_device *ap_dev = to_ap_dev(dev); - int length; + int retval = 0, length = 0, i = 0; if (!ap_dev) return -ENODEV; /* Set up DEV_TYPE environment variable. */ - envp[0] = buffer; - length = scnprintf(buffer, buffer_size, "DEV_TYPE=%04X", - ap_dev->device_type); - if (buffer_size - length <= 0) - return -ENOMEM; - buffer += length; - buffer_size -= length; + retval = add_uevent_var(envp, num_envp, &i, + buffer, buffer_size, &length, + "DEV_TYPE=%04X", ap_dev->device_type); + if (retval) + return retval; + /* Add MODALIAS= */ - envp[1] = buffer; - length = scnprintf(buffer, buffer_size, "MODALIAS=ap:t%02X", - ap_dev->device_type); - if (buffer_size - length <= 0) - return -ENOMEM; - envp[2] = NULL; - return 0; + retval = add_uevent_var(envp, num_envp, &i, + buffer, buffer_size, &length, + "MODALIAS=ap:t%02X", ap_dev->device_type); + + envp[i] = NULL; + return retval; } static struct bus_type ap_bus_type = { |