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authorAlan Stern <stern@rowland.harvard.edu>2012-01-24 14:35:13 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2012-01-26 17:04:39 -0800
commited283e9f0a2cc0541870828c76c6c6997c51a318 (patch)
tree60950f46dae4af2cd8648e1c187a198e481904c7 /drivers/pci/pci-driver.c
parentfad12ac8c8c2591c7f4e61d19b6a9d76cd49fafa (diff)
downloadop-kernel-dev-ed283e9f0a2cc0541870828c76c6c6997c51a318.zip
op-kernel-dev-ed283e9f0a2cc0541870828c76c6c6997c51a318.tar.gz
USB/PCI/PCMCIA: Clean up new_id and remove_id sysfs attribute routines
This patch (as1514) cleans up some places where new_id and remove_id sysfs attributes are created and deleted. Handling both attributes in a single routine rather than a pair of routines makes the code smaller. It also prevents certain kinds of errors, like one we currently have in the USB subsystem: The removeid attribute is often created even when newid isn't (because the driver's no_dynamid_id flag is set). In the case of the PCMCIA subsystem, the newid attribute is created but never explicitly deleted. The patch adds a deletion routine. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org> Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/pci/pci-driver.c')
-rw-r--r--drivers/pci/pci-driver.c50
1 files changed, 17 insertions, 33 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index ff54047..8d9616b 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -188,43 +188,34 @@ store_remove_id(struct device_driver *driver, const char *buf, size_t count)
static DRIVER_ATTR(remove_id, S_IWUSR, NULL, store_remove_id);
static int
-pci_create_newid_file(struct pci_driver *drv)
+pci_create_newid_files(struct pci_driver *drv)
{
int error = 0;
- if (drv->probe != NULL)
- error = driver_create_file(&drv->driver, &driver_attr_new_id);
- return error;
-}
-
-static void pci_remove_newid_file(struct pci_driver *drv)
-{
- driver_remove_file(&drv->driver, &driver_attr_new_id);
-}
-static int
-pci_create_removeid_file(struct pci_driver *drv)
-{
- int error = 0;
- if (drv->probe != NULL)
- error = driver_create_file(&drv->driver,&driver_attr_remove_id);
+ if (drv->probe != NULL) {
+ error = driver_create_file(&drv->driver, &driver_attr_new_id);
+ if (error == 0) {
+ error = driver_create_file(&drv->driver,
+ &driver_attr_remove_id);
+ if (error)
+ driver_remove_file(&drv->driver,
+ &driver_attr_new_id);
+ }
+ }
return error;
}
-static void pci_remove_removeid_file(struct pci_driver *drv)
+static void pci_remove_newid_files(struct pci_driver *drv)
{
driver_remove_file(&drv->driver, &driver_attr_remove_id);
+ driver_remove_file(&drv->driver, &driver_attr_new_id);
}
#else /* !CONFIG_HOTPLUG */
-static inline int pci_create_newid_file(struct pci_driver *drv)
+static inline int pci_create_newid_files(struct pci_driver *drv)
{
return 0;
}
-static inline void pci_remove_newid_file(struct pci_driver *drv) {}
-static inline int pci_create_removeid_file(struct pci_driver *drv)
-{
- return 0;
-}
-static inline void pci_remove_removeid_file(struct pci_driver *drv) {}
+static inline void pci_remove_newid_files(struct pci_driver *drv) {}
#endif
/**
@@ -1136,18 +1127,12 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
if (error)
goto out;
- error = pci_create_newid_file(drv);
+ error = pci_create_newid_files(drv);
if (error)
goto out_newid;
-
- error = pci_create_removeid_file(drv);
- if (error)
- goto out_removeid;
out:
return error;
-out_removeid:
- pci_remove_newid_file(drv);
out_newid:
driver_unregister(&drv->driver);
goto out;
@@ -1166,8 +1151,7 @@ out_newid:
void
pci_unregister_driver(struct pci_driver *drv)
{
- pci_remove_removeid_file(drv);
- pci_remove_newid_file(drv);
+ pci_remove_newid_files(drv);
driver_unregister(&drv->driver);
pci_free_dynids(drv);
}
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