On 2021-04-28 12:53 p.m., Bjorn Helgaas wrote:
In subject:
s/PCI: add support/PCI: Add support/
to match convention ("git log --oneline drivers/pci/pci-driver.c" to
learn this).
On Wed, Apr 28, 2021 at 11:11:48AM -0400, Andrey Grodzovsky wrote:
This is exact copy of 'USB: add support for dev_groups to
struct usb_device_driver' patch by Greg but just for
the PCI case.
Ideally this would be an imperative sentence telling us what the patch
*does*, not just that it's a copy of something else.
I'd also like a brief comment about why this is useful, i.e., why you
need this and what you're going to use it for.
The usual commit citation format is 7d9c1d2f7aca ("USB: add support
for dev_groups to struct usb_device_driver") so it's easier to locate
the commit.
I see there is also b71b283e3d6d ("USB: add support for dev_groups to
struct usb_driver"). I don't know enough about USB to know whether
7d9c1d2f7aca or b71b283e3d6d is a closer analogue to what you're doing
here, but I do see that struct usb_driver is far more common than
struct usb_device_driver.
PCI has struct pci_driver, but doesn't have the concept of a struct
pci_device_driver.
Since we don't have pci_device_driver then pci_driver is the best place
for it then, no ?
Andrey
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@xxxxxxx>
Suggested-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pci/pci-driver.c | 1 +
include/linux/pci.h | 3 +++
2 files changed, 4 insertions(+)
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index ec44a79e951a..3a72352aa5cf 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -1385,6 +1385,7 @@ int __pci_register_driver(struct pci_driver *drv, struct module *owner,
drv->driver.owner = owner;
drv->driver.mod_name = mod_name;
drv->driver.groups = drv->groups;
+ drv->driver.dev_groups = drv->dev_groups;
spin_lock_init(&drv->dynids.lock);
INIT_LIST_HEAD(&drv->dynids.list);
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 86c799c97b77..b57755b03009 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -858,6 +858,8 @@ struct module;
* number of VFs to enable via sysfs "sriov_numvfs" file.
* @err_handler: See Documentation/PCI/pci-error-recovery.rst
* @groups: Sysfs attribute groups.
+ * @dev_groups: Attributes attached to the device that will be
+ * created once it is bound to the driver.
* @driver: Driver model structure.
* @dynids: List of dynamically added device IDs.
*/
@@ -873,6 +875,7 @@ struct pci_driver {
int (*sriov_configure)(struct pci_dev *dev, int num_vfs); /* On PF */
const struct pci_error_handlers *err_handler;
const struct attribute_group **groups;
+ const struct attribute_group **dev_groups;
struct device_driver driver;
struct pci_dynids dynids;
};
--
2.25.1
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