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usb: dwc3: gadget: fix DEPSTARTCFG for non-EP0 EPs 

DEPSTARTCFG for non-EP0 EPs must only be sent once per config

[ balbi@ti.com : changed config_start to start_config_issued ]

Signed-off-by: Paul Zimmerman <paulz@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Paul Zimmerman 2011-09-30 10:58:42 +03:00 committed by Greg Kroah-Hartman
parent 49a25cc9a7
commit b23c843992
3 changed files with 12 additions and 1 deletions
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2
drivers/usb/dwc3/core.h
View File

@ -529,6 +529,7 @@ static inline void dwc3_trb_to_nat(struct dwc3_trb_hw *hw, struct dwc3_trb *nat)
* @ep0_status_pending: ep0 status response without a req is pending
* @ep0_bounced: true when we used bounce buffer
* @ep0_expect_in: true when we expect a DATA IN transfer
* @start_config_issued: true when StartConfig command has been issued
* @ep0_next_event: hold the next expected event
* @ep0state: state of endpoint zero
* @link_state: link state
@ -576,6 +577,7 @@ struct dwc3 {
unsigned ep0_status_pending:1;
unsigned ep0_bounced:1;
unsigned ep0_expect_in:1;
unsigned start_config_issued:1;
enum dwc3_ep0_next ep0_next_event;
enum dwc3_ep0_state ep0state;

1
drivers/usb/dwc3/ep0.c
View File

@ -455,6 +455,7 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
u32 cfg;
int ret;
dwc->start_config_issued = false;
cfg = le16_to_cpu(ctrl->wValue);
switch (dwc->dev_state) {

10
drivers/usb/dwc3/gadget.c
View File

@ -237,8 +237,12 @@ static int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep)
if (dep->number != 1) {
cmd = DWC3_DEPCMD_DEPSTARTCFG;
/* XferRscIdx == 0 for ep0 and 2 for the remaining */
if (dep->number > 1)
if (dep->number > 1) {
if (dwc->start_config_issued)
return 0;
dwc->start_config_issued = true;
cmd |= DWC3_DEPCMD_PARAM(2);
}
return dwc3_send_gadget_ep_cmd(dwc, 0, cmd, &params);
}
@ -1161,6 +1165,8 @@ static int dwc3_gadget_start(struct usb_gadget *g,
reg |= DWC3_DCFG_SUPERSPEED;
dwc3_writel(dwc->regs, DWC3_DCFG, reg);
dwc->start_config_issued = false;
/* Start with SuperSpeed Default */
dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
@ -1592,6 +1598,7 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
dwc3_stop_active_transfers(dwc);
dwc3_disconnect_gadget(dwc);
dwc->start_config_issued = false;
dwc->gadget.speed = USB_SPEED_UNKNOWN;
}
@ -1643,6 +1650,7 @@ static void dwc3_gadget_reset_interrupt(struct dwc3 *dwc)
dwc3_stop_active_transfers(dwc);
dwc3_clear_stall_all_ep(dwc);
dwc->start_config_issued = false;
/* Reset device address to zero */
reg = dwc3_readl(dwc->regs, DWC3_DCFG);