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usb: dwc2: gadget: kill ep0 requests before reinitializing core 

Make sure there are no requests pending on ep0 before reinitializing
core. Otherwise, dwc2_hsotg_enqueue_setup will fail afterwards.

Also, take hsotg->lock before calling
dwc2_hsotg_core_init_disconnected() from dwc2_conn_id_status_change()
as dwc2_hsotg_complete_request() expect lock to be held.

Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Tested-by: Robert Baldyga <r.baldyga@samsung.com>
Tested-by: Dinh Nguyen <dinguyen@opensource.altera.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Mian Yousaf Kaukab 2015-09-29 12:08:25 +02:00 committed by Felipe Balbi
parent c524dd5f43
commit 5390d438e6
2 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/usb/dwc2/gadget.c
View File

@ -2287,6 +2287,9 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
{
u32 val;
/* Kill any ep0 requests as controller will be reinitialized */
kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET);
if (!is_usb_reset)
if (dwc2_hsotg_corereset(hsotg))
return;
@ -2515,9 +2518,6 @@ irq_retry:
if (time_after(jiffies, hsotg->last_rst +
msecs_to_jiffies(200))) {
kill_all_requests(hsotg, hsotg->eps_out[0],
-ECONNRESET);
dwc2_hsotg_core_init_disconnected(hsotg, true);
}
}
@ -3296,8 +3296,6 @@ static int dwc2_hsotg_vbus_session(struct usb_gadget *gadget, int is_active)
if (hsotg->lx_state == DWC2_L2)
dwc2_exit_hibernation(hsotg, false);
/* Kill any ep0 requests as controller will be reinitialized */
kill_all_requests(hsotg, hsotg->eps_out[0], -ECONNRESET);
dwc2_hsotg_core_init_disconnected(hsotg, false);
if (hsotg->enabled)
dwc2_hsotg_core_connect(hsotg);

3
drivers/usb/dwc2/hcd.c
View File

@ -1355,6 +1355,7 @@ static void dwc2_conn_id_status_change(struct work_struct *work)
wf_otg);
u32 count = 0;
u32 gotgctl;
unsigned long flags;
dev_dbg(hsotg->dev, "%s()\n", __func__);
@ -1382,7 +1383,9 @@ static void dwc2_conn_id_status_change(struct work_struct *work)
hsotg->op_state = OTG_STATE_B_PERIPHERAL;
dwc2_core_init(hsotg, false, -1);
dwc2_enable_global_interrupts(hsotg);
spin_lock_irqsave(&hsotg->lock, flags);
dwc2_hsotg_core_init_disconnected(hsotg, false);
spin_unlock_irqrestore(&hsotg->lock, flags);
dwc2_hsotg_core_connect(hsotg);
} else {
/* A-Device connector (Host Mode) */