From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/drivers/usb/core/hub.c | 375 +++++++++++++++++++++++++++++++----------------------
1 files changed, 221 insertions(+), 154 deletions(-)
diff --git a/kernel/drivers/usb/core/hub.c b/kernel/drivers/usb/core/hub.c
index b397f14..37f4225 100644
--- a/kernel/drivers/usb/core/hub.c
+++ b/kernel/drivers/usb/core/hub.c
@@ -42,6 +42,9 @@
#define USB_PRODUCT_USB5534B 0x5534
#define USB_VENDOR_CYPRESS 0x04b4
#define USB_PRODUCT_CY7C65632 0x6570
+#define USB_VENDOR_TEXAS_INSTRUMENTS 0x0451
+#define USB_PRODUCT_TUSB8041_USB3 0x8140
+#define USB_PRODUCT_TUSB8041_USB2 0x8142
#define HUB_QUIRK_CHECK_PORT_AUTOSUSPEND 0x01
#define HUB_QUIRK_DISABLE_AUTOSUSPEND 0x02
@@ -2378,9 +2381,8 @@
* usb_enumerate_device - Read device configs/intfs/otg (usbcore-internal)
* @udev: newly addressed device (in ADDRESS state)
*
- * This is only called by usb_new_device() and usb_authorize_device()
- * and FIXME -- all comments that apply to them apply here wrt to
- * environment.
+ * This is only called by usb_new_device() -- all comments that apply there
+ * apply here wrt to environment.
*
* If the device is WUSB and not authorized, we don't attempt to read
* the string descriptors, as they will be errored out by the device
@@ -2645,12 +2647,17 @@
}
if (usb_dev->wusb) {
- result = usb_get_device_descriptor(usb_dev, sizeof(usb_dev->descriptor));
- if (result < 0) {
+ struct usb_device_descriptor *descr;
+
+ descr = usb_get_device_descriptor(usb_dev);
+ if (IS_ERR(descr)) {
+ result = PTR_ERR(descr);
dev_err(&usb_dev->dev, "can't re-read device descriptor for "
"authorization: %d\n", result);
goto error_device_descriptor;
}
+ usb_dev->descriptor = *descr;
+ kfree(descr);
}
usb_dev->authorized = 1;
@@ -4593,6 +4600,67 @@
return hcd->driver->enable_device(hcd, udev);
}
+/*
+ * Get the bMaxPacketSize0 value during initialization by reading the
+ * device's device descriptor. Since we don't already know this value,
+ * the transfer is unsafe and it ignores I/O errors, only testing for
+ * reasonable received values.
+ *
+ * For "old scheme" initialization, size will be 8 so we read just the
+ * start of the device descriptor, which should work okay regardless of
+ * the actual bMaxPacketSize0 value. For "new scheme" initialization,
+ * size will be 64 (and buf will point to a sufficiently large buffer),
+ * which might not be kosher according to the USB spec but it's what
+ * Windows does and what many devices expect.
+ *
+ * Returns: bMaxPacketSize0 or a negative error code.
+ */
+static int get_bMaxPacketSize0(struct usb_device *udev,
+ struct usb_device_descriptor *buf, int size, bool first_time)
+{
+ int i, rc;
+
+ /*
+ * Retry on all errors; some devices are flakey.
+ * 255 is for WUSB devices, we actually need to use
+ * 512 (WUSB1.0[4.8.1]).
+ */
+ for (i = 0; i < GET_MAXPACKET0_TRIES; ++i) {
+ /* Start with invalid values in case the transfer fails */
+ buf->bDescriptorType = buf->bMaxPacketSize0 = 0;
+ rc = usb_control_msg(udev, usb_rcvaddr0pipe(),
+ USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
+ USB_DT_DEVICE << 8, 0,
+ buf, size,
+ initial_descriptor_timeout);
+ switch (buf->bMaxPacketSize0) {
+ case 8: case 16: case 32: case 64: case 9:
+ if (buf->bDescriptorType == USB_DT_DEVICE) {
+ rc = buf->bMaxPacketSize0;
+ break;
+ }
+ fallthrough;
+ default:
+ if (rc >= 0)
+ rc = -EPROTO;
+ break;
+ }
+
+ /*
+ * Some devices time out if they are powered on
+ * when already connected. They need a second
+ * reset, so return early. But only on the first
+ * attempt, lest we get into a time-out/reset loop.
+ */
+ if (rc > 0 || (rc == -ETIMEDOUT && first_time &&
+ udev->speed > USB_SPEED_FULL))
+ break;
+ }
+ return rc;
+}
+
+#define GET_DESCRIPTOR_BUFSIZE 64
+
/* Reset device, (re)assign address, get device descriptor.
* Device connection must be stable, no more debouncing needed.
* Returns device in USB_STATE_ADDRESS, except on error.
@@ -4602,10 +4670,17 @@
* the port lock. For a newly detected device that is not accessible
* through any global pointers, it's not necessary to lock the device,
* but it is still necessary to lock the port.
+ *
+ * For a newly detected device, @dev_descr must be NULL. The device
+ * descriptor retrieved from the device will then be stored in
+ * @udev->descriptor. For an already existing device, @dev_descr
+ * must be non-NULL. The device descriptor will be stored there,
+ * not in @udev->descriptor, because descriptors for registered
+ * devices are meant to be immutable.
*/
static int
hub_port_init(struct usb_hub *hub, struct usb_device *udev, int port1,
- int retry_counter)
+ int retry_counter, struct usb_device_descriptor *dev_descr)
{
struct usb_device *hdev = hub->hdev;
struct usb_hcd *hcd = bus_to_hcd(hdev->bus);
@@ -4617,6 +4692,13 @@
int devnum = udev->devnum;
const char *driver_name;
bool do_new_scheme;
+ const bool initial = !dev_descr;
+ int maxp0;
+ struct usb_device_descriptor *buf, *descr;
+
+ buf = kmalloc(GET_DESCRIPTOR_BUFSIZE, GFP_NOIO);
+ if (!buf)
+ return -ENOMEM;
/* root hub ports have a slightly longer reset period
* (from USB 2.0 spec, section 7.1.7.5)
@@ -4649,32 +4731,34 @@
}
oldspeed = udev->speed;
- /* USB 2.0 section 5.5.3 talks about ep0 maxpacket ...
- * it's fixed size except for full speed devices.
- * For Wireless USB devices, ep0 max packet is always 512 (tho
- * reported as 0xff in the device descriptor). WUSB1.0[4.8.1].
- */
- switch (udev->speed) {
- case USB_SPEED_SUPER_PLUS:
- case USB_SPEED_SUPER:
- case USB_SPEED_WIRELESS: /* fixed at 512 */
- udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512);
- break;
- case USB_SPEED_HIGH: /* fixed at 64 */
- udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
- break;
- case USB_SPEED_FULL: /* 8, 16, 32, or 64 */
- /* to determine the ep0 maxpacket size, try to read
- * the device descriptor to get bMaxPacketSize0 and
- * then correct our initial guess.
+ if (initial) {
+ /* USB 2.0 section 5.5.3 talks about ep0 maxpacket ...
+ * it's fixed size except for full speed devices.
+ * For Wireless USB devices, ep0 max packet is always 512 (tho
+ * reported as 0xff in the device descriptor). WUSB1.0[4.8.1].
*/
- udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
- break;
- case USB_SPEED_LOW: /* fixed at 8 */
- udev->ep0.desc.wMaxPacketSize = cpu_to_le16(8);
- break;
- default:
- goto fail;
+ switch (udev->speed) {
+ case USB_SPEED_SUPER_PLUS:
+ case USB_SPEED_SUPER:
+ case USB_SPEED_WIRELESS: /* fixed at 512 */
+ udev->ep0.desc.wMaxPacketSize = cpu_to_le16(512);
+ break;
+ case USB_SPEED_HIGH: /* fixed at 64 */
+ udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
+ break;
+ case USB_SPEED_FULL: /* 8, 16, 32, or 64 */
+ /* to determine the ep0 maxpacket size, try to read
+ * the device descriptor to get bMaxPacketSize0 and
+ * then correct our initial guess.
+ */
+ udev->ep0.desc.wMaxPacketSize = cpu_to_le16(64);
+ break;
+ case USB_SPEED_LOW: /* fixed at 8 */
+ udev->ep0.desc.wMaxPacketSize = cpu_to_le16(8);
+ break;
+ default:
+ goto fail;
+ }
}
if (udev->speed == USB_SPEED_WIRELESS)
@@ -4697,22 +4781,24 @@
if (udev->speed < USB_SPEED_SUPER)
dev_info(&udev->dev,
"%s %s USB device number %d using %s\n",
- (udev->config) ? "reset" : "new", speed,
+ (initial ? "new" : "reset"), speed,
devnum, driver_name);
- /* Set up TT records, if needed */
- if (hdev->tt) {
- udev->tt = hdev->tt;
- udev->ttport = hdev->ttport;
- } else if (udev->speed != USB_SPEED_HIGH
- && hdev->speed == USB_SPEED_HIGH) {
- if (!hub->tt.hub) {
- dev_err(&udev->dev, "parent hub has no TT\n");
- retval = -EINVAL;
- goto fail;
+ if (initial) {
+ /* Set up TT records, if needed */
+ if (hdev->tt) {
+ udev->tt = hdev->tt;
+ udev->ttport = hdev->ttport;
+ } else if (udev->speed != USB_SPEED_HIGH
+ && hdev->speed == USB_SPEED_HIGH) {
+ if (!hub->tt.hub) {
+ dev_err(&udev->dev, "parent hub has no TT\n");
+ retval = -EINVAL;
+ goto fail;
+ }
+ udev->tt = &hub->tt;
+ udev->ttport = port1;
}
- udev->tt = &hub->tt;
- udev->ttport = port1;
}
/* Why interleave GET_DESCRIPTOR and SET_ADDRESS this way?
@@ -4731,9 +4817,6 @@
for (retries = 0; retries < GET_DESCRIPTOR_TRIES; (++retries, msleep(100))) {
if (do_new_scheme) {
- struct usb_device_descriptor *buf;
- int r = 0;
-
retval = hub_enable_device(udev);
if (retval < 0) {
dev_err(&udev->dev,
@@ -4742,52 +4825,14 @@
goto fail;
}
-#define GET_DESCRIPTOR_BUFSIZE 64
- buf = kmalloc(GET_DESCRIPTOR_BUFSIZE, GFP_NOIO);
- if (!buf) {
- retval = -ENOMEM;
- continue;
+ maxp0 = get_bMaxPacketSize0(udev, buf,
+ GET_DESCRIPTOR_BUFSIZE, retries == 0);
+ if (maxp0 > 0 && !initial &&
+ maxp0 != udev->descriptor.bMaxPacketSize0) {
+ dev_err(&udev->dev, "device reset changed ep0 maxpacket size!\n");
+ retval = -ENODEV;
+ goto fail;
}
-
- /* Retry on all errors; some devices are flakey.
- * 255 is for WUSB devices, we actually need to use
- * 512 (WUSB1.0[4.8.1]).
- */
- for (operations = 0; operations < GET_MAXPACKET0_TRIES;
- ++operations) {
- buf->bMaxPacketSize0 = 0;
- r = usb_control_msg(udev, usb_rcvaddr0pipe(),
- USB_REQ_GET_DESCRIPTOR, USB_DIR_IN,
- USB_DT_DEVICE << 8, 0,
- buf, GET_DESCRIPTOR_BUFSIZE,
- initial_descriptor_timeout);
- switch (buf->bMaxPacketSize0) {
- case 8: case 16: case 32: case 64: case 255:
- if (buf->bDescriptorType ==
- USB_DT_DEVICE) {
- r = 0;
- break;
- }
- fallthrough;
- default:
- if (r == 0)
- r = -EPROTO;
- break;
- }
- /*
- * Some devices time out if they are powered on
- * when already connected. They need a second
- * reset. But only on the first attempt,
- * lest we get into a time out/reset loop
- */
- if (r == 0 || (r == -ETIMEDOUT &&
- retries == 0 &&
- udev->speed > USB_SPEED_FULL))
- break;
- }
- udev->descriptor.bMaxPacketSize0 =
- buf->bMaxPacketSize0;
- kfree(buf);
retval = hub_port_reset(hub, port1, udev, delay, false);
if (retval < 0) /* error or disconnect */
@@ -4798,14 +4843,13 @@
retval = -ENODEV;
goto fail;
}
- if (r) {
- if (r != -ENODEV)
+ if (maxp0 < 0) {
+ if (maxp0 != -ENODEV)
dev_err(&udev->dev, "device descriptor read/64, error %d\n",
- r);
- retval = -EMSGSIZE;
+ maxp0);
+ retval = maxp0;
continue;
}
-#undef GET_DESCRIPTOR_BUFSIZE
}
/*
@@ -4847,18 +4891,22 @@
break;
}
- retval = usb_get_device_descriptor(udev, 8);
- if (retval < 8) {
+ /* !do_new_scheme || wusb */
+ maxp0 = get_bMaxPacketSize0(udev, buf, 8, retries == 0);
+ if (maxp0 < 0) {
+ retval = maxp0;
if (retval != -ENODEV)
dev_err(&udev->dev,
"device descriptor read/8, error %d\n",
retval);
- if (retval >= 0)
- retval = -EMSGSIZE;
} else {
u32 delay;
- retval = 0;
+ if (!initial && maxp0 != udev->descriptor.bMaxPacketSize0) {
+ dev_err(&udev->dev, "device reset changed ep0 maxpacket size!\n");
+ retval = -ENODEV;
+ goto fail;
+ }
delay = udev->parent->hub_delay;
udev->hub_delay = min_t(u32, delay,
@@ -4877,6 +4925,51 @@
goto fail;
/*
+ * Check the ep0 maxpacket guess and correct it if necessary.
+ * maxp0 is the value stored in the device descriptor;
+ * i is the value it encodes (logarithmic for SuperSpeed or greater).
+ */
+ i = maxp0;
+ if (udev->speed >= USB_SPEED_SUPER) {
+ if (maxp0 <= 16)
+ i = 1 << maxp0;
+ else
+ i = 0; /* Invalid */
+ }
+ if (usb_endpoint_maxp(&udev->ep0.desc) == i) {
+ ; /* Initial ep0 maxpacket guess is right */
+ } else if ((udev->speed == USB_SPEED_FULL ||
+ udev->speed == USB_SPEED_HIGH) &&
+ (i == 8 || i == 16 || i == 32 || i == 64)) {
+ /* Initial guess is wrong; use the descriptor's value */
+ if (udev->speed == USB_SPEED_FULL)
+ dev_dbg(&udev->dev, "ep0 maxpacket = %d\n", i);
+ else
+ dev_warn(&udev->dev, "Using ep0 maxpacket: %d\n", i);
+ udev->ep0.desc.wMaxPacketSize = cpu_to_le16(i);
+ usb_ep0_reinit(udev);
+ } else {
+ /* Initial guess is wrong and descriptor's value is invalid */
+ dev_err(&udev->dev, "Invalid ep0 maxpacket: %d\n", maxp0);
+ retval = -EMSGSIZE;
+ goto fail;
+ }
+
+ descr = usb_get_device_descriptor(udev);
+ if (IS_ERR(descr)) {
+ retval = PTR_ERR(descr);
+ if (retval != -ENODEV)
+ dev_err(&udev->dev, "device descriptor read/all, error %d\n",
+ retval);
+ goto fail;
+ }
+ if (initial)
+ udev->descriptor = *descr;
+ else
+ *dev_descr = *descr;
+ kfree(descr);
+
+ /*
* Some superspeed devices have finished the link training process
* and attached to a superspeed hub port, but the device descriptor
* got from those devices show they aren't superspeed devices. Warm
@@ -4884,41 +4977,9 @@
*/
if ((udev->speed >= USB_SPEED_SUPER) &&
(le16_to_cpu(udev->descriptor.bcdUSB) < 0x0300)) {
- dev_err(&udev->dev, "got a wrong device descriptor, "
- "warm reset device\n");
- hub_port_reset(hub, port1, udev,
- HUB_BH_RESET_TIME, true);
+ dev_err(&udev->dev, "got a wrong device descriptor, warm reset device\n");
+ hub_port_reset(hub, port1, udev, HUB_BH_RESET_TIME, true);
retval = -EINVAL;
- goto fail;
- }
-
- if (udev->descriptor.bMaxPacketSize0 == 0xff ||
- udev->speed >= USB_SPEED_SUPER)
- i = 512;
- else
- i = udev->descriptor.bMaxPacketSize0;
- if (usb_endpoint_maxp(&udev->ep0.desc) != i) {
- if (udev->speed == USB_SPEED_LOW ||
- !(i == 8 || i == 16 || i == 32 || i == 64)) {
- dev_err(&udev->dev, "Invalid ep0 maxpacket: %d\n", i);
- retval = -EMSGSIZE;
- goto fail;
- }
- if (udev->speed == USB_SPEED_FULL)
- dev_dbg(&udev->dev, "ep0 maxpacket = %d\n", i);
- else
- dev_warn(&udev->dev, "Using ep0 maxpacket: %d\n", i);
- udev->ep0.desc.wMaxPacketSize = cpu_to_le16(i);
- usb_ep0_reinit(udev);
- }
-
- retval = usb_get_device_descriptor(udev, USB_DT_DEVICE_SIZE);
- if (retval < (signed)sizeof(udev->descriptor)) {
- if (retval != -ENODEV)
- dev_err(&udev->dev, "device descriptor read/all, error %d\n",
- retval);
- if (retval >= 0)
- retval = -ENOMSG;
goto fail;
}
@@ -4942,6 +5003,7 @@
hub_port_disable(hub, port1, 0);
update_devnum(udev, devnum); /* for disconnect processing */
}
+ kfree(buf);
return retval;
}
@@ -5022,7 +5084,7 @@
static int descriptors_changed(struct usb_device *udev,
- struct usb_device_descriptor *old_device_descriptor,
+ struct usb_device_descriptor *new_device_descriptor,
struct usb_host_bos *old_bos)
{
int changed = 0;
@@ -5033,8 +5095,8 @@
int length;
char *buf;
- if (memcmp(&udev->descriptor, old_device_descriptor,
- sizeof(*old_device_descriptor)) != 0)
+ if (memcmp(&udev->descriptor, new_device_descriptor,
+ sizeof(*new_device_descriptor)) != 0)
return 1;
if ((old_bos && !udev->bos) || (!old_bos && udev->bos))
@@ -5207,7 +5269,7 @@
}
/* reset (non-USB 3.0 devices) and get descriptor */
- status = hub_port_init(hub, udev, port1, i);
+ status = hub_port_init(hub, udev, port1, i, NULL);
if (status < 0)
goto loop;
@@ -5355,9 +5417,8 @@
{
struct usb_port *port_dev = hub->ports[port1 - 1];
struct usb_device *udev = port_dev->child;
- struct usb_device_descriptor descriptor;
+ struct usb_device_descriptor *descr;
int status = -ENODEV;
- int retval;
dev_dbg(&port_dev->dev, "status %04x, change %04x, %s\n", portstatus,
portchange, portspeed(hub, portstatus));
@@ -5384,23 +5445,20 @@
* changed device descriptors before resuscitating the
* device.
*/
- descriptor = udev->descriptor;
- retval = usb_get_device_descriptor(udev,
- sizeof(udev->descriptor));
- if (retval < 0) {
+ descr = usb_get_device_descriptor(udev);
+ if (IS_ERR(descr)) {
dev_dbg(&udev->dev,
- "can't read device descriptor %d\n",
- retval);
+ "can't read device descriptor %ld\n",
+ PTR_ERR(descr));
} else {
- if (descriptors_changed(udev, &descriptor,
+ if (descriptors_changed(udev, descr,
udev->bos)) {
dev_dbg(&udev->dev,
"device descriptor has changed\n");
- /* for disconnect() calls */
- udev->descriptor = descriptor;
} else {
status = 0; /* Nothing to do */
}
+ kfree(descr);
}
#ifdef CONFIG_PM
} else if (udev->state == USB_STATE_SUSPENDED &&
@@ -5717,6 +5775,16 @@
.idVendor = USB_VENDOR_GENESYS_LOGIC,
.bInterfaceClass = USB_CLASS_HUB,
.driver_info = HUB_QUIRK_CHECK_PORT_AUTOSUSPEND},
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+ | USB_DEVICE_ID_MATCH_PRODUCT,
+ .idVendor = USB_VENDOR_TEXAS_INSTRUMENTS,
+ .idProduct = USB_PRODUCT_TUSB8041_USB2,
+ .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
+ { .match_flags = USB_DEVICE_ID_MATCH_VENDOR
+ | USB_DEVICE_ID_MATCH_PRODUCT,
+ .idVendor = USB_VENDOR_TEXAS_INSTRUMENTS,
+ .idProduct = USB_PRODUCT_TUSB8041_USB3,
+ .driver_info = HUB_QUIRK_DISABLE_AUTOSUSPEND},
{ .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS,
.bDeviceClass = USB_CLASS_HUB},
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
@@ -5818,7 +5886,7 @@
struct usb_device *parent_hdev = udev->parent;
struct usb_hub *parent_hub;
struct usb_hcd *hcd = bus_to_hcd(udev->bus);
- struct usb_device_descriptor descriptor = udev->descriptor;
+ struct usb_device_descriptor descriptor;
struct usb_host_bos *bos;
int i, j, ret = 0;
int port1 = udev->portnum;
@@ -5860,7 +5928,7 @@
/* ep0 maxpacket size may change; let the HCD know about it.
* Other endpoints will be handled by re-enumeration. */
usb_ep0_reinit(udev);
- ret = hub_port_init(parent_hub, udev, port1, i);
+ ret = hub_port_init(parent_hub, udev, port1, i, &descriptor);
if (ret >= 0 || ret == -ENOTCONN || ret == -ENODEV)
break;
}
@@ -5872,7 +5940,6 @@
/* Device might have changed firmware (DFU or similar) */
if (descriptors_changed(udev, &descriptor, bos)) {
dev_info(&udev->dev, "device firmware changed\n");
- udev->descriptor = descriptor; /* for disconnect() calls */
goto re_enumerate;
}
--
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