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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 cf2cff7480f1..e65bf2b395aa 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)
335{ 335{
336 struct device_driver *driver = kobj_to_pci_driver(kobj); 336 struct device_driver *driver = kobj_to_pci_driver(kobj);
337 struct driver_attribute *dattr = attr_to_driver_attribute(attr); 337 struct driver_attribute *dattr = attr_to_driver_attribute(attr);
338 ssize_t ret = 0; 338 ssize_t ret;
339 339
340 if (get_driver(driver)) { 340 if (!get_driver(driver))
341 if (dattr->show) 341 return -ENODEV;
342 ret = dattr->show(driver, buf); 342
343 put_driver(driver); 343 ret = dattr->show ? dattr->show(driver, buf) : -EIO;
344 } 344
345 put_driver(driver);
345 return ret; 346 return ret;
346} 347}
347 348
@@ -351,13 +352,14 @@ pci_driver_attr_store(struct kobject * kobj, struct attribute *attr,
351{ 352{
352 struct device_driver *driver = kobj_to_pci_driver(kobj); 353 struct device_driver *driver = kobj_to_pci_driver(kobj);
353 struct driver_attribute *dattr = attr_to_driver_attribute(attr); 354 struct driver_attribute *dattr = attr_to_driver_attribute(attr);
354 ssize_t ret = 0; 355 ssize_t ret;
355 356
356 if (get_driver(driver)) { 357 if (!get_driver(driver))
357 if (dattr->store) 358 return -ENODEV;
358 ret = dattr->store(driver, buf, count); 359
359 put_driver(driver); 360 ret = dattr->store ? dattr->store(driver, buf, count) : -EIO;
360 } 361
362 put_driver(driver);
361 return ret; 363 return ret;
362} 364}
363 365