shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-04-04 12:13:05 +09:00
Code Issues Packages Projects Releases Wiki Activity

usb: dwc2: Fix dwc2_hsotg_core_init_disconnected()

Browse Source 
[ Upstream commit 755d739534 ]

We should call dwc2_hsotg_enqueue_setup() after properly
setting lx_state. Because it may cause error-out from
dwc2_hsotg_enqueue_setup() due to wrong value in lx_state.

Issue can be reproduced by loading driver while connected
A-Connector (start in A-HOST mode) then disconnect A-Connector
to switch to B-DEVICE.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Vardan Mikayelyan <mvardan@synopsys.com>
Signed-off-by: Grigor Tovmasyan <tovmasya@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Vardan Mikayelyan
2018-01-16 16:04:24 +04:00
committed by Greg Kroah-Hartman
parent a3fcccd4a7
commit ee4ed01d4b
1 changed files with 6 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/usb/dwc2/gadget.c
View File

@@ -3414,12 +3414,6 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
dwc2_writel(dwc2_hsotg_ep0_mps(hsotg->eps_out[0]->ep.maxpacket) |
DXEPCTL_USBACTEP, hsotg->regs + DIEPCTL0);
dwc2_hsotg_enqueue_setup(hsotg);
dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n",
dwc2_readl(hsotg->regs + DIEPCTL0),
dwc2_readl(hsotg->regs + DOEPCTL0));
/* clear global NAKs */
val = DCTL_CGOUTNAK | DCTL_CGNPINNAK;
if (!is_usb_reset)
@@ -3430,6 +3424,12 @@ void dwc2_hsotg_core_init_disconnected(struct dwc2_hsotg *hsotg,
mdelay(3);
hsotg->lx_state = DWC2_L0;
dwc2_hsotg_enqueue_setup(hsotg);
dev_dbg(hsotg->dev, "EP0: DIEPCTL0=0x%08x, DOEPCTL0=0x%08x\n",
dwc2_readl(hsotg->regs + DIEPCTL0),
dwc2_readl(hsotg->regs + DOEPCTL0));
}
static void dwc2_hsotg_core_disconnect(struct dwc2_hsotg *hsotg)