| Message ID | 20210515052434.1413236-14-kw@linux.com (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
| Series | [v2,01/14] PCI: Use sysfs_emit() and sysfs_emit_at() in "show" functions | expand |
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 5d63df7c1820..4e9f582ca10f 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -580,10 +580,11 @@ static ssize_t driver_override_show(struct device *dev, struct device_attribute *attr, char *buf) { struct pci_dev *pdev = to_pci_dev(dev); - ssize_t len; + ssize_t len = 0; device_lock(dev); - len = sysfs_emit(buf, "%s\n", pdev->driver_override); + if (pdev->driver_override) + len = sysfs_emit(buf, "%s\n", pdev->driver_override); device_unlock(dev); return len; }
Only expose the value of the "driver_override" variable through the corresponding sysfs object when a value is actually set. Signed-off-by: Krzysztof Wilczyński <kw@linux.com> --- drivers/pci/pci-sysfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)