Linux Virtualization - Nov 2010 - [PATCH] virtio: fix format of sysfs driver/vendor files

The sysfs files for virtio produce the wrong format and are missing
the required newline. The output for virtio bus vendor/device should
have the same format as the corresponding entries for PCI devices.

Although this technically changes the ABI for sysfs, these files were
broken to start with!

Signed-off-by: Stephen Hemminger <shemminger at vyatta.com>


--- a/drivers/virtio/virtio.c	2010-11-09 21:39:31.713916249 -0800
+++ b/drivers/virtio/virtio.c	2010-11-09 21:40:16.072089461 -0800
@@ -9,19 +9,19 @@ static ssize_t device_show(struct device
 			   struct device_attribute *attr, char *buf)
 {
 	struct virtio_device *dev = container_of(_d,struct virtio_device,dev);
-	return sprintf(buf, "%hu", dev->id.device);
+	return sprintf(buf, "0x%04x\n", dev->id.device);
 }
 static ssize_t vendor_show(struct device *_d,
 			   struct device_attribute *attr, char *buf)
 {
 	struct virtio_device *dev = container_of(_d,struct virtio_device,dev);
-	return sprintf(buf, "%hu", dev->id.vendor);
+	return sprintf(buf, "0x%04x\n", dev->id.vendor);
 }
 static ssize_t status_show(struct device *_d,
 			   struct device_attribute *attr, char *buf)
 {
 	struct virtio_device *dev = container_of(_d,struct virtio_device,dev);
-	return sprintf(buf, "0x%08x", dev->config->get_status(dev));
+	return sprintf(buf, "0x%08x\n", dev->config->get_status(dev));
 }
 static ssize_t modalias_show(struct device *_d,
 			     struct device_attribute *attr, char *buf)

On Wed, 10 Nov 2010 04:50:29 pm Stephen Hemminger wrote:
> The sysfs files for virtio produce the wrong format and are missing
> the required newline. The output for virtio bus vendor/device should
> have the same format as the corresponding entries for PCI devices.
> 
> Although this technically changes the ABI for sysfs, these files were
> broken to start with!
Agreed, and I don't think anyone currently uses them.

Applied,
Rusty.