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path: root/drivers/pci/pci-driver.c
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Diffstat (limited to 'drivers/pci/pci-driver.c')
-rw-r--r--drivers/pci/pci-driver.c26
1 files changed, 14 insertions, 12 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index cf2cff7480f..e65bf2b395a 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -335,13 +335,14 @@ pci_driver_attr_show(struct kobject * kobj, struct attribute *attr, char *buf)
{
struct device_driver *driver = kobj_to_pci_driver(kobj);
struct driver_attribute *dattr = attr_to_driver_attribute(attr);
- ssize_t ret = 0;
+ ssize_t ret;
- if (get_driver(driver)) {
- if (dattr->show)
- ret = dattr->show(driver, buf);
- put_driver(driver);
- }
+ if (!get_driver(driver))
+ return -ENODEV;
+
+ ret = dattr->show ? dattr->show(driver, buf) : -EIO;
+
+ put_driver(driver);
return ret;
}
@@ -351,13 +352,14 @@ pci_driver_attr_store(struct kobject * kobj, struct attribute *attr,
{
struct device_driver *driver = kobj_to_pci_driver(kobj);
struct driver_attribute *dattr = attr_to_driver_attribute(attr);
- ssize_t ret = 0;
+ ssize_t ret;
- if (get_driver(driver)) {
- if (dattr->store)
- ret = dattr->store(driver, buf, count);
- put_driver(driver);
- }
+ if (!get_driver(driver))
+ return -ENODEV;
+
+ ret = dattr->store ? dattr->store(driver, buf, count) : -EIO;
+
+ put_driver(driver);
return ret;
}