diff options
Diffstat (limited to 'drivers/usb/gadget/udc/aspeed-vhub/dev.c')
| -rw-r--r-- | drivers/usb/gadget/udc/aspeed-vhub/dev.c | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/drivers/usb/gadget/udc/aspeed-vhub/dev.c b/drivers/usb/gadget/udc/aspeed-vhub/dev.c index 4008e7a51188..d268306a7bfe 100644 --- a/drivers/usb/gadget/udc/aspeed-vhub/dev.c +++ b/drivers/usb/gadget/udc/aspeed-vhub/dev.c @@ -77,7 +77,7 @@ static void ast_vhub_dev_enable(struct ast_vhub_dev *d) writel(d->ep0.buf_dma, d->regs + AST_VHUB_DEV_EP0_DATA); /* Clear stall on all EPs */ - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { + for (i = 0; i < d->max_epns; i++) { struct ast_vhub_ep *ep = d->epns[i]; if (ep && (ep->epn.stalled || ep->epn.wedged)) { @@ -137,7 +137,7 @@ static int ast_vhub_ep_feature(struct ast_vhub_dev *d, is_set ? "SET" : "CLEAR", ep_num, wValue); if (ep_num == 0) return std_req_complete; - if (ep_num >= AST_VHUB_NUM_GEN_EPs || !d->epns[ep_num - 1]) + if (ep_num >= d->max_epns || !d->epns[ep_num - 1]) return std_req_stall; if (wValue != USB_ENDPOINT_HALT) return std_req_driver; @@ -181,7 +181,7 @@ static int ast_vhub_ep_status(struct ast_vhub_dev *d, DDBG(d, "GET_STATUS(ep%d)\n", ep_num); - if (ep_num >= AST_VHUB_NUM_GEN_EPs) + if (ep_num >= d->max_epns) return std_req_stall; if (ep_num != 0) { ep = d->epns[ep_num - 1]; @@ -299,7 +299,7 @@ static void ast_vhub_dev_nuke(struct ast_vhub_dev *d) { unsigned int i; - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) { + for (i = 0; i < d->max_epns; i++) { if (!d->epns[i]) continue; ast_vhub_nuke(d->epns[i], -ESHUTDOWN); @@ -416,10 +416,10 @@ static struct usb_ep *ast_vhub_udc_match_ep(struct usb_gadget *gadget, * that will allow the generic code to use our * assigned address. */ - for (i = 0; i < AST_VHUB_NUM_GEN_EPs; i++) + for (i = 0; i < d->max_epns; i++) if (d->epns[i] == NULL) break; - if (i >= AST_VHUB_NUM_GEN_EPs) + if (i >= d->max_epns) return NULL; addr = i + 1; @@ -526,6 +526,7 @@ void ast_vhub_del_dev(struct ast_vhub_dev *d) usb_del_gadget_udc(&d->gadget); device_unregister(d->port_dev); + kfree(d->epns); } static void ast_vhub_dev_release(struct device *dev) @@ -547,13 +548,24 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, unsigned int idx) ast_vhub_init_ep0(vhub, &d->ep0, d); /* + * A USB device can have up to 30 endpoints besides control + * endpoint 0. + */ + d->max_epns = min_t(u32, vhub->max_epns, 30); + d->epns = kcalloc(d->max_epns, sizeof(*d->epns), GFP_KERNEL); + if (!d->epns) + return -ENOMEM; + + /* * The UDC core really needs us to have separate and uniquely * named "parent" devices for each port so we create a sub device * here for that purpose */ d->port_dev = kzalloc(sizeof(struct device), GFP_KERNEL); - if (!d->port_dev) - return -ENOMEM; + if (!d->port_dev) { + rc = -ENOMEM; + goto fail_alloc; + } device_initialize(d->port_dev); d->port_dev->release = ast_vhub_dev_release; d->port_dev->parent = parent; @@ -584,6 +596,8 @@ int ast_vhub_init_dev(struct ast_vhub *vhub, unsigned int idx) device_del(d->port_dev); fail_add: put_device(d->port_dev); + fail_alloc: + kfree(d->epns); return rc; } |