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@xxxxxxxxxxxx>
---
drivers/usb/mtu3/mtu3_core.c | 18 ++++++++++--------
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/usb/mtu3/mtu3_core.c b/drivers/usb/mtu3/mtu3_core.c
index 520e55a..af3e531 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);
@@ -730,8 +723,17 @@ 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);
--
1.7.9.5
--
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