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usb: fixes for v4.5-rc6

Browse Source 
The most important fixes here are:
 
 a) yet another fix to dwc3's EP transfer resource
 assignment logic. This time around we will be
 pre-allocating transfer resources to avoid any
 future issues;
 
 b) two DMA fixes for the old MUSB driver.
 
 c) dwc2's data toggle fix for FS
 
 Other than these, we have a few other minor fixes
 elsewhere.
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Merge tag 'fixes-for-v4.5-rc6' of http://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for v4.5-rc6

The most important fixes here are:

a) yet another fix to dwc3's EP transfer resource
assignment logic. This time around we will be
pre-allocating transfer resources to avoid any
future issues;

b) two DMA fixes for the old MUSB driver.

c) dwc2's data toggle fix for FS

Other than these, we have a few other minor fixes
elsewhere.
This commit is contained in:
Greg Kroah-Hartman 2016-02-24 09:04:21 -08:00
commit 428b315a24
14 changed files with 108 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
MAINTAINERS
View File

@ -3444,7 +3444,6 @@ F: drivers/usb/dwc2/
DESIGNWARE USB3 DRD IP DRIVER
M: Felipe Balbi <balbi@kernel.org>
L: linux-usb@vger.kernel.org
L: linux-omap@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
S: Maintained
F: drivers/usb/dwc3/
@ -7354,7 +7353,7 @@ F: drivers/tty/isicom.c
F: include/linux/isicom.h
MUSB MULTIPOINT HIGH SPEED DUAL-ROLE CONTROLLER
M: Felipe Balbi <balbi@kernel.org>
M: Bin Liu <b-liu@ti.com>
L: linux-usb@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
S: Maintained
@ -7923,11 +7922,9 @@ F: drivers/media/platform/omap3isp/
F: drivers/staging/media/omap4iss/
OMAP USB SUPPORT
M: Felipe Balbi <balbi@kernel.org>
L: linux-usb@vger.kernel.org
L: linux-omap@vger.kernel.org
T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git
S: Maintained
S: Orphan
F: drivers/usb/*/*omap*
F: arch/arm/*omap*/usb*

1
drivers/usb/dwc2/Kconfig
View File

@ -1,5 +1,6 @@
config USB_DWC2
tristate "DesignWare USB2 DRD Core Support"
depends on HAS_DMA
depends on USB || USB_GADGET
help
Say Y here if your system has a Dual Role Hi-Speed USB

6
drivers/usb/dwc2/core.c
View File

@ -619,6 +619,12 @@ void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg)
__func__, hsotg->dr_mode);
break;
}
/*
* NOTE: This is required for some rockchip soc based
* platforms.
*/
msleep(50);
}
/*

23
drivers/usb/dwc2/hcd_ddma.c
View File

@ -1174,14 +1174,11 @@ static int dwc2_process_non_isoc_desc(struct dwc2_hsotg *hsotg,
failed = dwc2_update_non_isoc_urb_state_ddma(hsotg, chan, qtd, dma_desc,
halt_status, n_bytes,
xfer_done);
if (*xfer_done && urb->status != -EINPROGRESS)
failed = 1;
if (failed) {
if (failed || (*xfer_done && urb->status != -EINPROGRESS)) {
dwc2_host_complete(hsotg, qtd, urb->status);
dwc2_hcd_qtd_unlink_and_free(hsotg, qtd, qh);
dev_vdbg(hsotg->dev, "failed=%1x xfer_done=%1x status=%08x\n",
failed, *xfer_done, urb->status);
dev_vdbg(hsotg->dev, "failed=%1x xfer_done=%1x\n",
failed, *xfer_done);
return failed;
}
@ -1236,21 +1233,23 @@ static void dwc2_complete_non_isoc_xfer_ddma(struct dwc2_hsotg *hsotg,
list_for_each_safe(qtd_item, qtd_tmp, &qh->qtd_list) {
int i;
int qtd_desc_count;
qtd = list_entry(qtd_item, struct dwc2_qtd, qtd_list_entry);
xfer_done = 0;
qtd_desc_count = qtd->n_desc;
for (i = 0; i < qtd->n_desc; i++) {
for (i = 0; i < qtd_desc_count; i++) {
if (dwc2_process_non_isoc_desc(hsotg, chan, chnum, qtd,
desc_num, halt_status,
&xfer_done)) {
qtd = NULL;
break;
}
&xfer_done))
goto stop_scan;
desc_num++;
}
}
stop_scan:
if (qh->ep_type != USB_ENDPOINT_XFER_CONTROL) {
/*
* Resetting the data toggle for bulk and interrupt endpoints
@ -1258,7 +1257,7 @@ static void dwc2_complete_non_isoc_xfer_ddma(struct dwc2_hsotg *hsotg,
*/
if (halt_status == DWC2_HC_XFER_STALL)
qh->data_toggle = DWC2_HC_PID_DATA0;
else if (qtd)
else
dwc2_hcd_save_data_toggle(hsotg, chan, chnum, qtd);
}

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

@ -525,11 +525,19 @@ void dwc2_hcd_save_data_toggle(struct dwc2_hsotg *hsotg,
u32 pid = (hctsiz & TSIZ_SC_MC_PID_MASK) >> TSIZ_SC_MC_PID_SHIFT;
if (chan->ep_type != USB_ENDPOINT_XFER_CONTROL) {
if (WARN(!chan || !chan->qh,
"chan->qh must be specified for non-control eps\n"))
return;
if (pid == TSIZ_SC_MC_PID_DATA0)
chan->qh->data_toggle = DWC2_HC_PID_DATA0;
else
chan->qh->data_toggle = DWC2_HC_PID_DATA1;
} else {
if (WARN(!qtd,
"qtd must be specified for control eps\n"))
return;
if (pid == TSIZ_SC_MC_PID_DATA0)
qtd->data_toggle = DWC2_HC_PID_DATA0;
else

1
drivers/usb/dwc3/core.h
View File

@ -856,7 +856,6 @@ struct dwc3 {
unsigned pullups_connected:1;
unsigned resize_fifos:1;
unsigned setup_packet_pending:1;
unsigned start_config_issued:1;
unsigned three_stage_setup:1;
unsigned usb3_lpm_capable:1;

5
drivers/usb/dwc3/ep0.c
View File

@ -555,7 +555,6 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
int ret;
u32 reg;
dwc->start_config_issued = false;
cfg = le16_to_cpu(ctrl->wValue);
switch (state) {
@ -737,10 +736,6 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_ISOCH_DELAY");
ret = dwc3_ep0_set_isoch_delay(dwc, ctrl);
break;
case USB_REQ_SET_INTERFACE:
dwc3_trace(trace_dwc3_ep0, "USB_REQ_SET_INTERFACE");
dwc->start_config_issued = false;
/* Fall through */
default:
dwc3_trace(trace_dwc3_ep0, "Forwarding to gadget driver");
ret = dwc3_ep0_delegate_req(dwc, ctrl);

70
drivers/usb/dwc3/gadget.c
View File

@ -385,24 +385,66 @@ static void dwc3_free_trb_pool(struct dwc3_ep *dep)
dep->trb_pool_dma = 0;
}
static int dwc3_gadget_set_xfer_resource(struct dwc3 *dwc, struct dwc3_ep *dep);
/**
* dwc3_gadget_start_config - Configure EP resources
* @dwc: pointer to our controller context structure
* @dep: endpoint that is being enabled
*
* The assignment of transfer resources cannot perfectly follow the
* data book due to the fact that the controller driver does not have
* all knowledge of the configuration in advance. It is given this
* information piecemeal by the composite gadget framework after every
* SET_CONFIGURATION and SET_INTERFACE. Trying to follow the databook
* programming model in this scenario can cause errors. For two
* reasons:
*
* 1) The databook says to do DEPSTARTCFG for every SET_CONFIGURATION
* and SET_INTERFACE (8.1.5). This is incorrect in the scenario of
* multiple interfaces.
*
* 2) The databook does not mention doing more DEPXFERCFG for new
* endpoint on alt setting (8.1.6).
*
* The following simplified method is used instead:
*
* All hardware endpoints can be assigned a transfer resource and this
* setting will stay persistent until either a core reset or
* hibernation. So whenever we do a DEPSTARTCFG(0) we can go ahead and
* do DEPXFERCFG for every hardware endpoint as well. We are
* guaranteed that there are as many transfer resources as endpoints.
*
* This function is called for each endpoint when it is being enabled
* but is triggered only when called for EP0-out, which always happens
* first, and which should only happen in one of the above conditions.
*/
static int dwc3_gadget_start_config(struct dwc3 *dwc, struct dwc3_ep *dep)
{
struct dwc3_gadget_ep_cmd_params params;
u32 cmd;
int i;
int ret;
if (dep->number)
return 0;
memset(&params, 0x00, sizeof(params));
cmd = DWC3_DEPCMD_DEPSTARTCFG;
if (dep->number != 1) {
cmd = DWC3_DEPCMD_DEPSTARTCFG;
/* XferRscIdx == 0 for ep0 and 2 for the remaining */
if (dep->number > 1) {
if (dwc->start_config_issued)
return 0;
dwc->start_config_issued = true;
cmd |= DWC3_DEPCMD_PARAM(2);
}
ret = dwc3_send_gadget_ep_cmd(dwc, 0, cmd, &params);
if (ret)
return ret;
return dwc3_send_gadget_ep_cmd(dwc, 0, cmd, &params);
for (i = 0; i < DWC3_ENDPOINTS_NUM; i++) {
struct dwc3_ep *dep = dwc->eps[i];
if (!dep)
continue;
ret = dwc3_gadget_set_xfer_resource(dwc, dep);
if (ret)
return ret;
}
return 0;
@ -516,10 +558,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
struct dwc3_trb *trb_st_hw;
struct dwc3_trb *trb_link;
ret = dwc3_gadget_set_xfer_resource(dwc, dep);
if (ret)
return ret;
dep->endpoint.desc = desc;
dep->comp_desc = comp_desc;
dep->type = usb_endpoint_type(desc);
@ -1636,8 +1674,6 @@ static int dwc3_gadget_start(struct usb_gadget *g,
}
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);
@ -2237,7 +2273,6 @@ static void dwc3_gadget_disconnect_interrupt(struct dwc3 *dwc)
dwc3_writel(dwc->regs, DWC3_DCTL, reg);
dwc3_disconnect_gadget(dwc);
dwc->start_config_issued = false;
dwc->gadget.speed = USB_SPEED_UNKNOWN;
dwc->setup_packet_pending = false;
@ -2288,7 +2323,6 @@ 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);

7
drivers/usb/gadget/legacy/inode.c
View File

@ -130,7 +130,8 @@ struct dev_data {
setup_can_stall : 1,
setup_out_ready : 1,
setup_out_error : 1,
setup_abort : 1;
setup_abort : 1,
gadget_registered : 1;
unsigned setup_wLength;
/* the rest is basically write-once */
@ -1179,7 +1180,8 @@ dev_release (struct inode *inode, struct file *fd)
/* closing ep0 === shutdown all */
usb_gadget_unregister_driver (&gadgetfs_driver);
if (dev->gadget_registered)
usb_gadget_unregister_driver (&gadgetfs_driver);
/* at this point "good" hardware has disconnected the
* device from USB; the host won't see it any more.
@ -1847,6 +1849,7 @@ dev_config (struct file *fd, const char __user *buf, size_t len, loff_t *ptr)
* kick in after the ep0 descriptor is closed.
*/
value = len;
dev->gadget_registered = true;
}
return value;

2
drivers/usb/gadget/udc/fsl_qe_udc.c
View File

@ -2340,7 +2340,7 @@ static struct qe_udc *qe_udc_config(struct platform_device *ofdev)
{
struct qe_udc *udc;
struct device_node *np = ofdev->dev.of_node;
unsigned int tmp_addr = 0;
unsigned long tmp_addr = 0;
struct usb_device_para __iomem *usbpram;
unsigned int i;
u64 size;

15
drivers/usb/gadget/udc/net2280.h
View File

@ -369,9 +369,20 @@ static inline void set_max_speed(struct net2280_ep *ep, u32 max)
static const u32 ep_enhanced[9] = { 0x10, 0x60, 0x30, 0x80,
0x50, 0x20, 0x70, 0x40, 0x90 };
if (ep->dev->enhanced_mode)
if (ep->dev->enhanced_mode) {
reg = ep_enhanced[ep->num];
else{
switch (ep->dev->gadget.speed) {
case USB_SPEED_SUPER:
reg += 2;
break;
case USB_SPEED_FULL:
reg += 1;
break;
case USB_SPEED_HIGH:
default:
break;
}
} else {
reg = (ep->num + 1) * 0x10;
if (ep->dev->gadget.speed != USB_SPEED_HIGH)
reg += 1;

3
drivers/usb/gadget/udc/udc-core.c
View File

@ -413,9 +413,10 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget,
if (!driver->udc_name || strcmp(driver->udc_name,
dev_name(&udc->dev)) == 0) {
ret = udc_bind_to_driver(udc, driver);
if (ret != -EPROBE_DEFER)
list_del(&driver->pending);
if (ret)
goto err4;
list_del(&driver->pending);
break;
}
}

8
drivers/usb/musb/musb_host.c
View File

@ -662,7 +662,7 @@ static int musb_tx_dma_set_mode_mentor(struct dma_controller *dma,
csr &= ~(MUSB_TXCSR_AUTOSET | MUSB_TXCSR_DMAMODE);
csr |= MUSB_TXCSR_DMAENAB; /* against programmer's guide */
}
channel->desired_mode = mode;
channel->desired_mode = *mode;
musb_writew(epio, MUSB_TXCSR, csr);
return 0;
@ -2003,10 +2003,8 @@ void musb_host_rx(struct musb *musb, u8 epnum)
qh->offset,
urb->transfer_buffer_length);
done = musb_rx_dma_in_inventra_cppi41(c, hw_ep, qh,
urb, xfer_len,
iso_err);
if (done)
if (musb_rx_dma_in_inventra_cppi41(c, hw_ep, qh, urb,
xfer_len, iso_err))
goto finish;
else
dev_err(musb->controller, "error: rx_dma failed\n");

20
drivers/usb/phy/phy-msm-usb.c
View File

@ -757,14 +757,8 @@ static int msm_otg_set_host(struct usb_otg *otg, struct usb_bus *host)
otg->host = host;
dev_dbg(otg->usb_phy->dev, "host driver registered w/ tranceiver\n");
/*
* Kick the state machine work, if peripheral is not supported
* or peripheral is already registered with us.
*/
if (motg->pdata->mode == USB_DR_MODE_HOST || otg->gadget) {
pm_runtime_get_sync(otg->usb_phy->dev);
schedule_work(&motg->sm_work);
}
pm_runtime_get_sync(otg->usb_phy->dev);
schedule_work(&motg->sm_work);
return 0;
}
@ -827,14 +821,8 @@ static int msm_otg_set_peripheral(struct usb_otg *otg,
dev_dbg(otg->usb_phy->dev,
"peripheral driver registered w/ tranceiver\n");
/*
* Kick the state machine work, if host is not supported
* or host is already registered with us.
*/
if (motg->pdata->mode == USB_DR_MODE_PERIPHERAL || otg->host) {
pm_runtime_get_sync(otg->usb_phy->dev);
schedule_work(&motg->sm_work);
}
pm_runtime_get_sync(otg->usb_phy->dev);
schedule_work(&motg->sm_work);
return 0;
}