usbcore: Check both id_table and match() when both available
authorBastien Nocera <hadess@hadess.net>
Thu, 22 Oct 2020 13:55:20 +0000 (09:55 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 28 Oct 2020 12:24:58 +0000 (13:24 +0100)
commit0942d59b0af46511d59dbf5bd69ec4a64d1a854c
tree44706a2b20b1129aaf102044c32e7ee99f4bc417
parent32d174d2d5eb318c34ff36771adefabdf227c186
usbcore: Check both id_table and match() when both available

From: Bastien Nocera <hadess@hadess.net>

When a USB device driver has both an id_table and a match() function, make
sure to check both to find a match, first matching the id_table, then
checking the match() function.

This makes it possible to have module autoloading done through the
id_table when devices are plugged in, before checking for further
device eligibility in the match() function.

Cc: <stable@vger.kernel.org> # 5.8
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Co-developed-by: M. Vefa Bicakci <m.v.b@runbox.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: M. Vefa Bicakci <m.v.b@runbox.com>
Tested-by: Pan (Pany) YUAN <pany@fedoraproject.org>
Link: https://lore.kernel.org/r/20201022135521.375211-2-m.v.b@runbox.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/core/driver.c
drivers/usb/core/generic.c
drivers/usb/core/usb.h