usb: host: xhci: plat: check hcc_params after add hcd
authorWilliam wu <william.wu@rock-chips.com>
Tue, 17 Jan 2017 07:32:07 +0000 (15:32 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 19 Jan 2017 09:34:45 +0000 (10:34 +0100)
commit5de4e1ea9a731cad195ce5152705c21daef3bbba
treea8c2a60a7d35f5d7ef8d8a339e6868a0b15215ed
parentfd7723e29e4f61c54d2e08295cda1986665dc8e5
usb: host: xhci: plat: check hcc_params after add hcd

The commit 4ac53087d6d4 ("usb: xhci: plat: Create both
HCDs before adding them") move add hcd to the end of
probe, this cause hcc_params uninitiated, because xHCI
driver sets hcc_params in xhci_gen_setup() called from
usb_add_hcd().

This patch checks the Maximum Primary Stream Array Size
in the hcc_params register after add primary hcd.

Signed-off-by: William wu <william.wu@rock-chips.com>
Acked-by: Roger Quadros <rogerq@ti.com>
Cc: stable <stable@vger.kernel.org> # 4.2+
Fixes: 4ac53087d6d4 ("usb: xhci: plat: Create both HCDs before adding them")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/xhci-plat.c