Merge tag 'fixes-for-v4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.8-rc1
First set of fixes for v4.8-rc cycle. Again, dwc3 is
the most active driver with over 60% of this pull
request touching it.
The most important fixes are related to scatterlist
usage with dwc3. Before this pull request, we were
increment request->actual multiple times and this
would result in request->actual being larger than
request->length.
Also, if a we received a short packet midway through
processing a scatterlist, we were not clearning HWO
bit as we should.
Other than the large dwc3 scatterlist fixes, we have
a new Device ID for Intel's Kabylake silicon.
Other drivers, such as fsl_qe_udc and renesas udc,
also got a few minor fixes. Details are in shortlog.
diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index 9743353..e56d59b 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -61,6 +61,7 @@
if (!simple->clks)
return -ENOMEM;
+ platform_set_drvdata(pdev, simple);
simple->dev = dev;
for (i = 0; i < simple->num_clocks; i++) {
diff --git a/drivers/usb/dwc3/dwc3-pci.c b/drivers/usb/dwc3/dwc3-pci.c
index 45f5a23..2eb84d6 100644
--- a/drivers/usb/dwc3/dwc3-pci.c
+++ b/drivers/usb/dwc3/dwc3-pci.c
@@ -37,6 +37,7 @@
#define PCI_DEVICE_ID_INTEL_BXT 0x0aaa
#define PCI_DEVICE_ID_INTEL_BXT_M 0x1aaa
#define PCI_DEVICE_ID_INTEL_APL 0x5aaa
+#define PCI_DEVICE_ID_INTEL_KBP 0xa2b0
static const struct acpi_gpio_params reset_gpios = { 0, 0, false };
static const struct acpi_gpio_params cs_gpios = { 1, 0, false };
@@ -227,6 +228,7 @@
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT), },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_BXT_M), },
{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_APL), },
+ { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_KBP), },
{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_NL_USB), },
{ } /* Terminating Entry */
};
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 8f8c215..1f5597e 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -829,7 +829,7 @@
if (!req->request.no_interrupt && !chain)
trb->ctrl |= DWC3_TRB_CTRL_IOC | DWC3_TRB_CTRL_ISP_IMI;
- if (last)
+ if (last && !usb_endpoint_xfer_isoc(dep->endpoint.desc))
trb->ctrl |= DWC3_TRB_CTRL_LST;
if (chain)
@@ -1955,7 +1955,8 @@
static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep,
struct dwc3_request *req, struct dwc3_trb *trb,
- const struct dwc3_event_depevt *event, int status)
+ const struct dwc3_event_depevt *event, int status,
+ int chain)
{
unsigned int count;
unsigned int s_pkt = 0;
@@ -1964,17 +1965,22 @@
dep->queued_requests--;
trace_dwc3_complete_trb(dep, trb);
+ /*
+ * If we're in the middle of series of chained TRBs and we
+ * receive a short transfer along the way, DWC3 will skip
+ * through all TRBs including the last TRB in the chain (the
+ * where CHN bit is zero. DWC3 will also avoid clearing HWO
+ * bit and SW has to do it manually.
+ *
+ * We're going to do that here to avoid problems of HW trying
+ * to use bogus TRBs for transfers.
+ */
+ if (chain && (trb->ctrl & DWC3_TRB_CTRL_HWO))
+ trb->ctrl &= ~DWC3_TRB_CTRL_HWO;
+
if ((trb->ctrl & DWC3_TRB_CTRL_HWO) && status != -ESHUTDOWN)
- /*
- * We continue despite the error. There is not much we
- * can do. If we don't clean it up we loop forever. If
- * we skip the TRB then it gets overwritten after a
- * while since we use them in a ring buffer. A BUG()
- * would help. Lets hope that if this occurs, someone
- * fixes the root cause instead of looking away :)
- */
- dev_err(dwc->dev, "%s's TRB (%p) still owned by HW\n",
- dep->name, trb);
+ return 1;
+
count = trb->size & DWC3_TRB_SIZE_MASK;
if (dep->direction) {
@@ -2013,15 +2019,7 @@
s_pkt = 1;
}
- /*
- * We assume here we will always receive the entire data block
- * which we should receive. Meaning, if we program RX to
- * receive 4K but we receive only 2K, we assume that's all we
- * should receive and we simply bounce the request back to the
- * gadget driver for further processing.
- */
- req->request.actual += req->request.length - count;
- if (s_pkt)
+ if (s_pkt && !chain)
return 1;
if ((event->status & DEPEVT_STATUS_LST) &&
(trb->ctrl & (DWC3_TRB_CTRL_LST |
@@ -2040,13 +2038,17 @@
struct dwc3_trb *trb;
unsigned int slot;
unsigned int i;
+ int count = 0;
int ret;
do {
+ int chain;
+
req = next_request(&dep->started_list);
if (WARN_ON_ONCE(!req))
return 1;
+ chain = req->request.num_mapped_sgs > 0;
i = 0;
do {
slot = req->first_trb_index + i;
@@ -2054,13 +2056,22 @@
slot++;
slot %= DWC3_TRB_NUM;
trb = &dep->trb_pool[slot];
+ count += trb->size & DWC3_TRB_SIZE_MASK;
ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb,
- event, status);
+ event, status, chain);
if (ret)
break;
} while (++i < req->request.num_mapped_sgs);
+ /*
+ * We assume here we will always receive the entire data block
+ * which we should receive. Meaning, if we program RX to
+ * receive 4K but we receive only 2K, we assume that's all we
+ * should receive and we simply bounce the request back to the
+ * gadget driver for further processing.
+ */
+ req->request.actual += req->request.length - count;
dwc3_gadget_giveback(dep, req, status);
if (ret)
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index eb64848..5ebe6af7 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -1913,6 +1913,8 @@
break;
case USB_RECIP_ENDPOINT:
+ if (!cdev->config)
+ break;
endp = ((w_index & 0x80) >> 3) | (w_index & 0x0f);
list_for_each_entry(f, &cdev->config->functions, list) {
if (test_bit(endp, f->endpoints))
@@ -2124,14 +2126,14 @@
cdev->os_desc_req = usb_ep_alloc_request(ep0, GFP_KERNEL);
if (!cdev->os_desc_req) {
- ret = PTR_ERR(cdev->os_desc_req);
+ ret = -ENOMEM;
goto end;
}
/* OS feature descriptor length <= 4kB */
cdev->os_desc_req->buf = kmalloc(4096, GFP_KERNEL);
if (!cdev->os_desc_req->buf) {
- ret = PTR_ERR(cdev->os_desc_req->buf);
+ ret = -ENOMEM;
kfree(cdev->os_desc_req);
goto end;
}
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c
index 70cf347..f9237fe 100644
--- a/drivers/usb/gadget/configfs.c
+++ b/drivers/usb/gadget/configfs.c
@@ -1490,7 +1490,9 @@
{
struct gadget_info *gi = to_gadget_info(item);
+ mutex_lock(&gi->lock);
unregister_gadget(gi);
+ mutex_unlock(&gi->lock);
}
EXPORT_SYMBOL_GPL(unregister_gadget_item);
diff --git a/drivers/usb/gadget/function/rndis.c b/drivers/usb/gadget/function/rndis.c
index 943c21a..ab6ac1b 100644
--- a/drivers/usb/gadget/function/rndis.c
+++ b/drivers/usb/gadget/function/rndis.c
@@ -680,6 +680,12 @@
{
rndis_reset_cmplt_type *resp;
rndis_resp_t *r;
+ u8 *xbuf;
+ u32 length;
+
+ /* drain the response queue */
+ while ((xbuf = rndis_get_next_response(params, &length)))
+ rndis_free_response(params, xbuf);
r = rndis_add_response(params, sizeof(rndis_reset_cmplt_type));
if (!r)
diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c
index a3f7e7c..5f562c1 100644
--- a/drivers/usb/gadget/function/u_ether.c
+++ b/drivers/usb/gadget/function/u_ether.c
@@ -556,7 +556,8 @@
/* Multi frame CDC protocols may store the frame for
* later which is not a dropped frame.
*/
- if (dev->port_usb->supports_multi_frame)
+ if (dev->port_usb &&
+ dev->port_usb->supports_multi_frame)
goto multiframe;
goto drop;
}
diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c
index 66753ba..31125a4 100644
--- a/drivers/usb/gadget/function/uvc_configfs.c
+++ b/drivers/usb/gadget/function/uvc_configfs.c
@@ -2023,7 +2023,7 @@
if (!data) {
kfree(*class_array);
*class_array = NULL;
- ret = PTR_ERR(data);
+ ret = -ENOMEM;
goto unlock;
}
cl_arr = *class_array;
diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c
index aa3707b..16104b5e 100644
--- a/drivers/usb/gadget/legacy/inode.c
+++ b/drivers/usb/gadget/legacy/inode.c
@@ -542,7 +542,7 @@
*/
spin_lock_irq(&epdata->dev->lock);
value = -ENODEV;
- if (unlikely(epdata->ep))
+ if (unlikely(epdata->ep == NULL))
goto fail;
req = usb_ep_alloc_request(epdata->ep, GFP_ATOMIC);
@@ -606,7 +606,7 @@
}
if (is_sync_kiocb(iocb)) {
value = ep_io(epdata, buf, len);
- if (value >= 0 && copy_to_iter(buf, value, to))
+ if (value >= 0 && (copy_to_iter(buf, value, to) != value))
value = -EFAULT;
} else {
struct kiocb_priv *priv = kzalloc(sizeof *priv, GFP_KERNEL);
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
index ff8685e..934f838 100644
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -1145,7 +1145,7 @@
if (ret != -EPROBE_DEFER)
list_del(&driver->pending);
if (ret)
- goto err4;
+ goto err5;
break;
}
}
@@ -1154,6 +1154,9 @@
return 0;
+err5:
+ device_del(&udc->dev);
+
err4:
list_del(&udc->list);
mutex_unlock(&udc_lock);
diff --git a/drivers/usb/gadget/udc/fsl_qe_udc.c b/drivers/usb/gadget/udc/fsl_qe_udc.c
index 93d28cb..cf8819a 100644
--- a/drivers/usb/gadget/udc/fsl_qe_udc.c
+++ b/drivers/usb/gadget/udc/fsl_qe_udc.c
@@ -2053,7 +2053,7 @@
struct qe_ep *ep;
if (wValue != 0 || wLength != 0
- || pipe > USB_MAX_ENDPOINTS)
+ || pipe >= USB_MAX_ENDPOINTS)
break;
ep = &udc->eps[pipe];
diff --git a/drivers/usb/phy/phy-omap-otg.c b/drivers/usb/phy/phy-omap-otg.c
index 6f6d2a7..6523af4 100644
--- a/drivers/usb/phy/phy-omap-otg.c
+++ b/drivers/usb/phy/phy-omap-otg.c
@@ -140,6 +140,8 @@
(rev >> 4) & 0xf, rev & 0xf, config->extcon, otg_dev->id,
otg_dev->vbus);
+ platform_set_drvdata(pdev, otg_dev);
+
return 0;
}
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 8fbbc2d..ac67bab 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -514,7 +514,8 @@
if (gpio > 0)
dparam->enable_gpio = gpio;
- if (dparam->type == USBHS_TYPE_RCAR_GEN2)
+ if (dparam->type == USBHS_TYPE_RCAR_GEN2 ||
+ dparam->type == USBHS_TYPE_RCAR_GEN3)
dparam->has_usb_dmac = 1;
return info;
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 280ed5f..857e783 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -871,7 +871,7 @@
/* use PIO if packet is less than pio_dma_border or pipe is DCP */
if ((len < usbhs_get_dparam(priv, pio_dma_border)) ||
- usbhs_pipe_is_dcp(pipe))
+ usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
goto usbhsf_pio_prepare_push;
/* check data length if this driver don't use USB-DMAC */
@@ -976,7 +976,7 @@
/* use PIO if packet is less than pio_dma_border or pipe is DCP */
if ((pkt->length < usbhs_get_dparam(priv, pio_dma_border)) ||
- usbhs_pipe_is_dcp(pipe))
+ usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC))
goto usbhsf_pio_prepare_pop;
fifo = usbhsf_get_dma_fifo(priv, pkt);
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c
index 50f3363..92bc83b 100644
--- a/drivers/usb/renesas_usbhs/mod_gadget.c
+++ b/drivers/usb/renesas_usbhs/mod_gadget.c
@@ -617,10 +617,13 @@
* use dmaengine if possible.
* It will use pio handler if impossible.
*/
- if (usb_endpoint_dir_in(desc))
+ if (usb_endpoint_dir_in(desc)) {
pipe->handler = &usbhs_fifo_dma_push_handler;
- else
+ } else {
pipe->handler = &usbhs_fifo_dma_pop_handler;
+ usbhs_xxxsts_clear(priv, BRDYSTS,
+ usbhs_pipe_number(pipe));
+ }
ret = 0;
}