xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

qeth: synchronize configuration interface

Browse Source 
Synchronize access to the drivers configuration interface.
Also do not allow configuration changes during online/offline
transition.

Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Frank Blaschka
2010-05-11 19:34:47 +00:00
committed by David S. Miller
parent 65a1f898ef
commit c4949f0743
6 changed files with 243 additions and 169 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/s390/net/qeth_l2_main.c
View File

@@ -924,6 +924,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
enum qeth_card_states recover_flag;
BUG_ON(!card);
mutex_lock(&card->conf_mutex);
QETH_DBF_TEXT(SETUP, 2, "setonlin");
QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
@@ -956,7 +957,7 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
dev_warn(&card->gdev->dev,
"The LAN is offline\n");
card->lan_online = 0;
return 0;
goto out;
}
rc = -ENODEV;
goto out_remove;
@@ -995,6 +996,8 @@ static int __qeth_l2_set_online(struct ccwgroup_device *gdev, int recovery_mode)
}
/* let user_space know that device is online */
kobject_uevent(&gdev->dev.kobj, KOBJ_CHANGE);
out:
mutex_unlock(&card->conf_mutex);
return 0;
out_remove:
@@ -1007,6 +1010,7 @@ out_remove:
card->state = CARD_STATE_RECOVER;
else
card->state = CARD_STATE_DOWN;
mutex_unlock(&card->conf_mutex);
return rc;
}
@@ -1022,6 +1026,7 @@ static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
int rc = 0, rc2 = 0, rc3 = 0;
enum qeth_card_states recover_flag;
mutex_lock(&card->conf_mutex);
QETH_DBF_TEXT(SETUP, 3, "setoffl");
QETH_DBF_HEX(SETUP, 3, &card, sizeof(void *));
@@ -1040,6 +1045,7 @@ static int __qeth_l2_set_offline(struct ccwgroup_device *cgdev,
card->state = CARD_STATE_RECOVER;
/* let user_space know that device is offline */
kobject_uevent(&cgdev->dev.kobj, KOBJ_CHANGE);
mutex_unlock(&card->conf_mutex);
return 0;
}