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[SCSI] SCSI megaraid_sas: handle thrown errors 

- handle clear_user() error

- handle and properly unwind from sysfs errors thrown during mod init

- adjust order of calls in megasas_exit() to precisely match
  registration order in megasas_init()

Signed-off-by: Jeff Garzik <jeff@garzik.org>

Updated for extra attribute and
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
hifive-unleashed-5.1
Jeff Garzik 2006-10-04 06:34:03 -04:00 committed by James Bottomley
parent bb0766204c
commit 83aabc1be5
1 changed files with 28 additions and 10 deletions
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38
drivers/scsi/megaraid/megaraid_sas.c
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@ -2864,7 +2864,8 @@ static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
int i;
int error = 0;
clear_user(ioc, sizeof(*ioc));
if (clear_user(ioc, sizeof(*ioc)))
return -EFAULT;
if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
@ -3010,16 +3011,33 @@ static int __init megasas_init(void)
if (rval) {
printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
goto err_pcidrv;
}
driver_create_file(&megasas_pci_driver.driver, &driver_attr_version);
driver_create_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
driver_create_file(&megasas_pci_driver.driver,
&driver_attr_dbg_lvl);
rval = driver_create_file(&megasas_pci_driver.driver,
&driver_attr_version);
if (rval)
goto err_dcf_attr_ver;
rval = driver_create_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
if (rval)
goto err_dcf_rel_date;
rval = driver_create_file(&megasas_pci_driver.driver,
&driver_attr_dbg_lvl);
if (rval)
goto err_dcf_dbg_lvl;
return rval;
err_dcf_dbg_lvl:
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
err_dcf_rel_date:
driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
err_dcf_attr_ver:
pci_unregister_driver(&megasas_pci_driver);
err_pcidrv:
unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
return rval;
}
/**
@ -3027,11 +3045,11 @@ static int __init megasas_init(void)
*/
static void __exit megasas_exit(void)
{
driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_dbg_lvl);
driver_remove_file(&megasas_pci_driver.driver,
&driver_attr_release_date);
driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
pci_unregister_driver(&megasas_pci_driver);
unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");