From ff483d55ba6fb50a8d6f99e808da35218533b1ef Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Mon, 13 Jan 2014 13:55:05 -0800 Subject: Revert "s390: use device_remove_file_self() instead of device_schedule_callback()" This reverts commit bdbb0a1376635d80e096f6433595a38984cf5408. Tejun writes: I'm sorry but can you please revert the whole series? get_active() waiting while a node is deactivated has potential to lead to deadlock and that deactivate/reactivate interface is something fundamentally flawed and that cgroup will have to work with the remove_self() like everybody else. IOW, I think the first posting was correct. Cc: Tejun Heo Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Signed-off-by: Greg Kroah-Hartman --- arch/s390/include/asm/ccwgroup.h | 1 - arch/s390/pci/pci_sysfs.c | 18 ++++++++++-------- 2 files changed, 10 insertions(+), 9 deletions(-) (limited to 'arch') diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h index 6e670f88d125..23723ce5ca7a 100644 --- a/arch/s390/include/asm/ccwgroup.h +++ b/arch/s390/include/asm/ccwgroup.h @@ -23,7 +23,6 @@ struct ccwgroup_device { unsigned int count; struct device dev; struct ccw_device *cdev[0]; - struct work_struct ungroup_work; }; /** diff --git a/arch/s390/pci/pci_sysfs.c b/arch/s390/pci/pci_sysfs.c index ab4a91393005..cf8a12ff733b 100644 --- a/arch/s390/pci/pci_sysfs.c +++ b/arch/s390/pci/pci_sysfs.c @@ -48,27 +48,29 @@ static ssize_t show_pfgid(struct device *dev, struct device_attribute *attr, } static DEVICE_ATTR(pfgid, S_IRUGO, show_pfgid, NULL); -static ssize_t store_recover(struct device *dev, struct device_attribute *attr, - const char *buf, size_t count) +static void recover_callback(struct device *dev) { struct pci_dev *pdev = to_pci_dev(dev); struct zpci_dev *zdev = get_zdev(pdev); int ret; - if (!device_remove_file_self(dev, attr)) - return count; - pci_stop_and_remove_bus_device(pdev); ret = zpci_disable_device(zdev); if (ret) - return ret; + return; ret = zpci_enable_device(zdev); if (ret) - return ret; + return; pci_rescan_bus(zdev->bus); - return count; +} + +static ssize_t store_recover(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + int rc = device_schedule_callback(dev, recover_callback); + return rc ? rc : count; } static DEVICE_ATTR(recover, S_IWUSR, NULL, store_recover); -- cgit v1.2.3