From: Kaike Wan <kaike.wan@intel.com>
Date: Mon, 16 Mar 2020 17:05:00 -0400
Subject: IB/hfi1: Remove kobj from hfi1_devdata
Patch-mainline: v5.7-rc1
Git-commit: 5ab17a24cb82a636e80c62386dcf1676cbcabaf1
References: bsc#1179878
The field kobj was added to hfi1_devdata structure to manage the life time
of the hfi1_devdata structure for PSM accesses:
commit e11ffbd57520 ("IB/hfi1: Do not free hfi1 cdev parent structure early")
Later another mechanism user_refcount/user_comp was introduced to provide
the same functionality:
commit acd7c8fe1493 ("IB/hfi1: Fix an Oops on pci device force remove")
This patch will remove this kobj field, as it is no longer needed.
Link: https://lore.kernel.org/r/20200316210500.7753.4145.stgit@awfm-01.aw.intel.com
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Kaike Wan <kaike.wan@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/infiniband/hw/hfi1/file_ops.c | 4 +---
drivers/infiniband/hw/hfi1/hfi.h | 2 --
drivers/infiniband/hw/hfi1/init.c | 26 ++++----------------------
3 files changed, 5 insertions(+), 27 deletions(-)
--- a/drivers/infiniband/hw/hfi1/file_ops.c
+++ b/drivers/infiniband/hw/hfi1/file_ops.c
@@ -209,7 +209,6 @@ static int hfi1_file_open(struct inode *
fd->mm = current->mm;
mmgrab(fd->mm);
fd->dd = dd;
- kobject_get(&fd->dd->kobj);
fp->private_data = fd;
return 0;
nomem:
@@ -713,7 +712,6 @@ static int hfi1_file_close(struct inode
deallocate_ctxt(uctxt);
done:
mmdrop(fdata->mm);
- kobject_put(&dd->kobj);
if (atomic_dec_and_test(&dd->user_refcount))
complete(&dd->user_comp);
@@ -1696,7 +1694,7 @@ static int user_add(struct hfi1_devdata
snprintf(name, sizeof(name), "%s_%d", class_name(), dd->unit);
ret = hfi1_cdev_init(dd->unit, name, &hfi1_file_ops,
&dd->user_cdev, &dd->user_device,
- true, &dd->kobj);
+ true, &dd->verbs_dev.rdi.ibdev.dev.kobj);
if (ret)
user_remove(dd);
--- a/drivers/infiniband/hw/hfi1/hfi.h
+++ b/drivers/infiniband/hw/hfi1/hfi.h
@@ -1413,8 +1413,6 @@ struct hfi1_devdata {
bool aspm_enabled; /* ASPM state: enabled/disabled */
struct rhashtable *sdma_rht;
- struct kobject kobj;
-
/* vnic data */
struct hfi1_vnic_data vnic;
/* Lock to protect IRQ SRC register access */
--- a/drivers/infiniband/hw/hfi1/init.c
+++ b/drivers/infiniband/hw/hfi1/init.c
@@ -1198,13 +1198,13 @@ static void finalize_asic_data(struct hf
}
/**
- * hfi1_clean_devdata - cleans up per-unit data structure
+ * hfi1_free_devdata - cleans up and frees per-unit data structure
* @dd: pointer to a valid devdata structure
*
- * It cleans up all data structures set up by
+ * It cleans up and frees all data structures set up by
* by hfi1_alloc_devdata().
*/
-static void hfi1_clean_devdata(struct hfi1_devdata *dd)
+void hfi1_free_devdata(struct hfi1_devdata *dd)
{
struct hfi1_asic_data *ad;
unsigned long flags;
@@ -1231,23 +1231,6 @@ static void hfi1_clean_devdata(struct hf
rvt_dealloc_device(&dd->verbs_dev.rdi);
}
-static void __hfi1_free_devdata(struct kobject *kobj)
-{
- struct hfi1_devdata *dd =
- container_of(kobj, struct hfi1_devdata, kobj);
-
- hfi1_clean_devdata(dd);
-}
-
-static struct kobj_type hfi1_devdata_type = {
- .release = __hfi1_free_devdata,
-};
-
-void hfi1_free_devdata(struct hfi1_devdata *dd)
-{
- kobject_put(&dd->kobj);
-}
-
/**
* hfi1_alloc_devdata - Allocate our primary per-unit data structure.
* @pdev: Valid PCI device
@@ -1333,11 +1316,10 @@ static struct hfi1_devdata *hfi1_alloc_d
goto bail;
}
- kobject_init(&dd->kobj, &hfi1_devdata_type);
return dd;
bail:
- hfi1_clean_devdata(dd);
+ hfi1_free_devdata(dd);
return ERR_PTR(ret);
}