diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2020-04-23 16:45:04 +0300 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2020-05-20 12:13:59 +0300 |
| commit | 0027e3fd6d907c81097ab656de2521854f37b9a6 (patch) | |
| tree | 4c0e054f68fa7fc1eb23da542cd1d4861787f371 /drivers/hv | |
| parent | 458c4475be9ae42e248963b2db732266d40408b7 (diff) | |
| download | linux-0027e3fd6d907c81097ab656de2521854f37b9a6.tar.xz | |
hyper-v: Replace open-coded variant of %*phN specifier
printf() like functions in the kernel have extensions, such as
%*phN to dump small pieces of memory as hex values.
Replace print_alias_name() with the direct use of %*phN.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200423134505.78221-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv')
| -rw-r--r-- | drivers/hv/vmbus_drv.c | 19 |
1 files changed, 3 insertions, 16 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index c1b7f4c344df..48e62028213b 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -117,14 +117,6 @@ static int vmbus_exists(void) return 0; } -#define VMBUS_ALIAS_LEN ((sizeof((struct hv_vmbus_device_id *)0)->guid) * 2) -static void print_alias_name(struct hv_device *hv_dev, char *alias_name) -{ - int i; - for (i = 0; i < VMBUS_ALIAS_LEN; i += 2) - sprintf(&alias_name[i], "%02x", hv_dev->dev_type.b[i/2]); -} - static u8 channel_monitor_group(const struct vmbus_channel *channel) { return (u8)channel->offermsg.monitorid / 32; @@ -221,10 +213,8 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *dev_attr, char *buf) { struct hv_device *hv_dev = device_to_hv_device(dev); - char alias_name[VMBUS_ALIAS_LEN + 1]; - print_alias_name(hv_dev, alias_name); - return sprintf(buf, "vmbus:%s\n", alias_name); + return sprintf(buf, "vmbus:%*phN\n", UUID_SIZE, &hv_dev->dev_type); } static DEVICE_ATTR_RO(modalias); @@ -693,12 +683,9 @@ __ATTRIBUTE_GROUPS(vmbus_dev); static int vmbus_uevent(struct device *device, struct kobj_uevent_env *env) { struct hv_device *dev = device_to_hv_device(device); - int ret; - char alias_name[VMBUS_ALIAS_LEN + 1]; + const char *format = "MODALIAS=vmbus:%*phN"; - print_alias_name(dev, alias_name); - ret = add_uevent_var(env, "MODALIAS=vmbus:%s", alias_name); - return ret; + return add_uevent_var(env, format, UUID_SIZE, &dev->dev_type); } static const struct hv_vmbus_device_id * |