[PATCH v2 14/14] PCI/sysfs: Only show value when driver_override is not NULL
From: Krzysztof Wilczyński <hidden>
Date: 2021-05-15 05:29:23
Also in:
linux-pci
Subsystem:
pci subsystem, the rest · Maintainers:
Bjorn Helgaas, Linus Torvalds
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 <redacted> --- drivers/pci/pci-sysfs.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
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; }
--
2.31.1