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[PARISC] pdc_stable: More robust sysfs error checking

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pdc_stable 0.10:
As mentioned on LKML, pdc_stable wasn't checky enough on the return
values of some calls. This patch makes it more robust to errors when
registering objects in sysfs.

Signed-off-by: Thibaut VARENE <varenet@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
This commit is contained in:
Thibaut VARENE 2006-01-10 20:48:01 -05:00 committed by Kyle McMartin
parent 9b9ff2e16a
commit 4b991da7fe
1 changed files with 31 additions and 11 deletions
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42
drivers/parisc/pdc_stable.c
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@ -56,7 +56,7 @@
#include <asm/uaccess.h>
#include <asm/hardware.h>
#define PDCS_VERSION "0.09"
#define PDCS_VERSION "0.10"
#define PDCS_ADDR_PPRI 0x00
#define PDCS_ADDR_OSID 0x40
@ -194,7 +194,8 @@ pdcspath_store(struct pdcspath_entry *entry)
return -EIO;
}
entry->ready = 1;
/* kobject is already registered */
entry->ready = 2;
DPRINTK("%s: device: 0x%p\n", __func__, entry->dev);
@ -653,15 +654,21 @@ pdcs_register_pathentries(void)
{
unsigned short i;
struct pdcspath_entry *entry;
int err;
for (i = 0; (entry = pdcspath_entries[i]); i++) {
if (pdcspath_fetch(entry) < 0)
continue;
kobject_set_name(&entry->kobj, "%s", entry->name);
if ((err = kobject_set_name(&entry->kobj, "%s", entry->name)))
return err;
kobj_set_kset_s(entry, paths_subsys);
kobject_register(&entry->kobj);
if ((err = kobject_register(&entry->kobj)))
return err;
/* kobject is now registered */
entry->ready = 2;
if (!entry->dev)
continue;
@ -675,14 +682,14 @@ pdcs_register_pathentries(void)
/**
* pdcs_unregister_pathentries - Routine called when unregistering the module.
*/
static inline void __exit
static inline void
pdcs_unregister_pathentries(void)
{
unsigned short i;
struct pdcspath_entry *entry;
for (i = 0; (entry = pdcspath_entries[i]); i++)
if (entry->ready)
if (entry->ready >= 2)
kobject_unregister(&entry->kobj);
}
@ -704,7 +711,7 @@ pdc_stable_init(void)
/* For now we'll register the pdc subsys within this driver */
if ((rc = firmware_register(&pdc_subsys)))
return rc;
goto fail_firmreg;
/* Don't forget the info entry */
for (i = 0; (attr = pdcs_subsys_attrs[i]) && !error; i++)
@ -713,12 +720,25 @@ pdc_stable_init(void)
/* register the paths subsys as a subsystem of pdc subsys */
kset_set_kset_s(&paths_subsys, pdc_subsys);
subsystem_register(&paths_subsys);
if ((rc= subsystem_register(&paths_subsys)))
goto fail_subsysreg;
/* now we create all "files" for the paths subsys */
pdcs_register_pathentries();
if ((rc = pdcs_register_pathentries()))
goto fail_pdcsreg;
return rc;
return 0;
fail_pdcsreg:
pdcs_unregister_pathentries();
subsystem_unregister(&paths_subsys);
fail_subsysreg:
firmware_unregister(&pdc_subsys);
fail_firmreg:
printk(KERN_INFO "PDC Stable Storage bailing out\n");
return rc;
}
static void __exit