diff options
| author | Chunfeng Yun <chunfeng.yun@mediatek.com> | 2016-12-07 15:23:13 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-12-07 09:37:24 +0100 |
| commit | 220d88eaddad3d4f128a2fbe876d968f94723f77 (patch) | |
| tree | 61be7691da994a3cdb07bdb24af1126785f2626a | |
| parent | c7d4abbcb19eae4cb2b4e4b1f5a0b122200c4db1 (diff) | |
| download | op-kernel-dev-220d88eaddad3d4f128a2fbe876d968f94723f77.zip op-kernel-dev-220d88eaddad3d4f128a2fbe876d968f94723f77.tar.gz | |
usb: mtu3: fix U3 port link issue
the issue is introduced when @is_u3_ip is used in mtu3_device_enabe()
before initialized in mtu3_mem_alloc(), so get global IP information
at first before used by following functins.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/mtu3/mtu3_core.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c index c0efc07..99c65b0 100644 --- a/drivers/usb/mtu3/mtu3_core.c +++ b/drivers/usb/mtu3/mtu3_core.c @@ -481,21 +481,14 @@ static int mtu3_mem_alloc(struct mtu3 *mtu) void __iomem *mbase = mtu->mac_base; struct mtu3_ep *ep_array; int in_ep_num, out_ep_num; - u32 cap_epinfo, cap_dev; + u32 cap_epinfo; int ret; int i; - mtu->hw_version = mtu3_readl(mtu->ippc_base, U3D_SSUSB_HW_ID); - - cap_dev = mtu3_readl(mtu->ippc_base, U3D_SSUSB_IP_DEV_CAP); - mtu->is_u3_ip = !!SSUSB_IP_DEV_U3_PORT_NUM(cap_dev); - cap_epinfo = mtu3_readl(mbase, U3D_CAP_EPINFO); in_ep_num = CAP_TX_EP_NUM(cap_epinfo); out_ep_num = CAP_RX_EP_NUM(cap_epinfo); - dev_info(mtu->dev, "IP version 0x%x(%s IP)\n", mtu->hw_version, - mtu->is_u3_ip ? "U3" : "U2"); dev_info(mtu->dev, "fifosz/epnum: Tx=%#x/%d, Rx=%#x/%d\n", mtu3_readl(mbase, U3D_CAP_EPNTXFFSZ), in_ep_num, mtu3_readl(mbase, U3D_CAP_EPNRXFFSZ), out_ep_num); @@ -732,8 +725,17 @@ static irqreturn_t mtu3_irq(int irq, void *data) static int mtu3_hw_init(struct mtu3 *mtu) { + u32 cap_dev; int ret; + mtu->hw_version = mtu3_readl(mtu->ippc_base, U3D_SSUSB_HW_ID); + + cap_dev = mtu3_readl(mtu->ippc_base, U3D_SSUSB_IP_DEV_CAP); + mtu->is_u3_ip = !!SSUSB_IP_DEV_U3_PORT_NUM(cap_dev); + + dev_info(mtu->dev, "IP version 0x%x(%s IP)\n", mtu->hw_version, + mtu->is_u3_ip ? "U3" : "U2"); + mtu3_device_reset(mtu); ret = mtu3_device_enable(mtu); |
