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-rw-r--r--drivers/usb/core/generic.c5
-rw-r--r--drivers/usb/core/hcd.c38
-rw-r--r--drivers/usb/core/hcd.h2
-rw-r--r--drivers/usb/core/hub.c76
-rw-r--r--drivers/usb/core/quirks.c7
-rw-r--r--drivers/usb/core/sysfs.c44
6 files changed, 120 insertions, 52 deletions
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index c1cb94e9f24..7e912f21fd3 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -155,9 +155,6 @@ static int generic_probe(struct usb_device *udev)
{
int err, c;
- /* put device-specific files into sysfs */
- usb_create_sysfs_dev_files(udev);
-
/* Choose and set the configuration. This registers the interfaces
* with the driver core and lets interface drivers bind to them.
*/
@@ -189,8 +186,6 @@ static void generic_disconnect(struct usb_device *udev)
* unconfigure the device */
if (udev->actconfig)
usb_set_configuration(udev, -1);
-
- usb_remove_sysfs_dev_files(udev);
}
#ifdef CONFIG_PM
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
index 09a53e7f332..7158dbb6e4b 100644
--- a/drivers/usb/core/hcd.c
+++ b/drivers/usb/core/hcd.c
@@ -1684,19 +1684,30 @@ EXPORT_SYMBOL_GPL(usb_bus_start_enum);
irqreturn_t usb_hcd_irq (int irq, void *__hcd)
{
struct usb_hcd *hcd = __hcd;
- int start = hcd->state;
+ unsigned long flags;
+ irqreturn_t rc;
- if (unlikely(start == HC_STATE_HALT ||
- !test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags)))
- return IRQ_NONE;
- if (hcd->driver->irq (hcd) == IRQ_NONE)
- return IRQ_NONE;
+ /* IRQF_DISABLED doesn't work correctly with shared IRQs
+ * when the first handler doesn't use it. So let's just
+ * assume it's never used.
+ */
+ local_irq_save(flags);
- set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
+ if (unlikely(hcd->state == HC_STATE_HALT ||
+ !test_bit(HCD_FLAG_HW_ACCESSIBLE, &hcd->flags))) {
+ rc = IRQ_NONE;
+ } else if (hcd->driver->irq(hcd) == IRQ_NONE) {
+ rc = IRQ_NONE;
+ } else {
+ set_bit(HCD_FLAG_SAW_IRQ, &hcd->flags);
- if (unlikely(hcd->state == HC_STATE_HALT))
- usb_hc_died (hcd);
- return IRQ_HANDLED;
+ if (unlikely(hcd->state == HC_STATE_HALT))
+ usb_hc_died(hcd);
+ rc = IRQ_HANDLED;
+ }
+
+ local_irq_restore(flags);
+ return rc;
}
/*-------------------------------------------------------------------------*/
@@ -1860,6 +1871,13 @@ int usb_add_hcd(struct usb_hcd *hcd,
/* enable irqs just before we start the controller */
if (hcd->driver->irq) {
+
+ /* IRQF_DISABLED doesn't work as advertised when used together
+ * with IRQF_SHARED. As usb_hcd_irq() will always disable
+ * interrupts we can remove it here.
+ */
+ irqflags &= ~IRQF_DISABLED;
+
snprintf(hcd->irq_descr, sizeof(hcd->irq_descr), "%s:usb%d",
hcd->driver->description, hcd->self.busnum);
if ((retval = request_irq(irqnum, &usb_hcd_irq, irqflags,
diff --git a/drivers/usb/core/hcd.h b/drivers/usb/core/hcd.h
index 1e4b81e9eb5..a0bf5df6cb6 100644
--- a/drivers/usb/core/hcd.h
+++ b/drivers/usb/core/hcd.h
@@ -213,6 +213,8 @@ struct hc_driver {
/* force handover of high-speed port to full-speed companion */
void (*relinquish_port)(struct usb_hcd *, int);
+ /* has a port been handed over to a companion? */
+ int (*port_handed_over)(struct usb_hcd *, int);
};
extern int usb_hcd_link_urb_to_ep(struct usb_hcd *hcd, struct urb *urb);
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index eb57fcc701d..512d2d57d41 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -644,6 +644,48 @@ static void hub_stop(struct usb_hub *hub)
#ifdef CONFIG_PM
+/* Try to identify which devices need USB-PERSIST handling */
+static int persistent_device(struct usb_device *udev)
+{
+ int i;
+ int retval;
+ struct usb_host_config *actconfig;
+
+ /* Explicitly not marked persistent? */
+ if (!udev->persist_enabled)
+ return 0;
+
+ /* No active config? */
+ actconfig = udev->actconfig;
+ if (!actconfig)
+ return 0;
+
+ /* FIXME! We should check whether it's open here or not! */
+
+ /*
+ * Check that all the interface drivers have a
+ * 'reset_resume' entrypoint
+ */
+ retval = 0;
+ for (i = 0; i < actconfig->desc.bNumInterfaces; i++) {
+ struct usb_interface *intf;
+ struct usb_driver *driver;
+
+ intf = actconfig->interface[i];
+ if (!intf->dev.driver)
+ continue;
+ driver = to_usb_driver(intf->dev.driver);
+ if (!driver->reset_resume)
+ return 0;
+ /*
+ * We have at least one driver, and that one
+ * has a reset_resume method.
+ */
+ retval = 1;
+ }
+ return retval;
+}
+
static void hub_restart(struct usb_hub *hub, int type)
{
struct usb_device *hdev = hub->hdev;
@@ -671,26 +713,19 @@ static void hub_restart(struct usb_hub *hub, int type)
}
/* Was the power session lost while we were suspended? */
- switch (type) {
- case HUB_RESET_RESUME:
- portstatus = 0;
- portchange = USB_PORT_STAT_C_CONNECTION;
- break;
+ status = hub_port_status(hub, port1, &portstatus, &portchange);
- case HUB_RESET:
- case HUB_RESUME:
- status = hub_port_status(hub, port1,
- &portstatus, &portchange);
- break;
- }
+ /* If the device is gone, khubd will handle it later */
+ if (status == 0 && !(portstatus & USB_PORT_STAT_CONNECTION))
+ continue;
/* For "USB_PERSIST"-enabled children we must
* mark the child device for reset-resume and
* turn off the various status changes to prevent
* khubd from disconnecting it later.
*/
- if (udev->persist_enabled && status == 0 &&
- !(portstatus & USB_PORT_STAT_ENABLE)) {
+ if (status == 0 && !(portstatus & USB_PORT_STAT_ENABLE) &&
+ persistent_device(udev)) {
if (portchange & USB_PORT_STAT_C_ENABLE)
clear_port_feature(hub->hdev, port1,
USB_PORT_FEAT_C_ENABLE);
@@ -1326,6 +1361,12 @@ void usb_disconnect(struct usb_device **pdev)
usb_unlock_device(udev);
+ /* Remove the device-specific files from sysfs. This must be
+ * done with udev unlocked, because some of the attribute
+ * routines try to acquire the device lock.
+ */
+ usb_remove_sysfs_dev_files(udev);
+
/* Unregister the device. The device driver is responsible
* for removing the device files from usbfs and sysfs and for
* de-configuring the device.
@@ -1541,6 +1582,9 @@ int usb_new_device(struct usb_device *udev)
goto fail;
}
+ /* put device-specific files into sysfs */
+ usb_create_sysfs_dev_files(udev);
+
/* Tell the world! */
announce_device(udev);
return err;
@@ -2744,7 +2788,11 @@ loop:
if ((status == -ENOTCONN) || (status == -ENOTSUPP))
break;
}
- dev_err(hub_dev, "unable to enumerate USB device on port %d\n", port1);
+ if (hub->hdev->parent ||
+ !hcd->driver->port_handed_over ||
+ !(hcd->driver->port_handed_over)(hcd, port1))
+ dev_err(hub_dev, "unable to enumerate USB device on port %d\n",
+ port1);
done:
hub_port_disable(hub, port1, 1);
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 2e201939029..c070b34b669 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -47,6 +47,13 @@ static const struct usb_device_id usb_quirk_list[] = {
/* Edirol SD-20 */
{ USB_DEVICE(0x0582, 0x0027), .driver_info = USB_QUIRK_RESET_RESUME },
+ /* appletouch */
+ { USB_DEVICE(0x05ac, 0x021a), .driver_info = USB_QUIRK_RESET_RESUME },
+
+ /* Avision AV600U */
+ { USB_DEVICE(0x0638, 0x0a13), .driver_info =
+ USB_QUIRK_STRING_FETCH_255 },
+
/* M-Systems Flash Disk Pioneers */
{ USB_DEVICE(0x08ec, 0x1000), .driver_info = USB_QUIRK_RESET_RESUME },
diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
index c783cb11184..5e1f5d55bf0 100644
--- a/drivers/usb/core/sysfs.c
+++ b/drivers/usb/core/sysfs.c
@@ -588,35 +588,33 @@ read_descriptors(struct kobject *kobj, struct bin_attribute *attr,
container_of(kobj, struct device, kobj));
size_t nleft = count;
size_t srclen, n;
+ int cfgno;
+ void *src;
- usb_lock_device(udev);
-
- /* The binary attribute begins with the device descriptor */
- srclen = sizeof(struct usb_device_descriptor);
- if (off < srclen) {
- n = min_t(size_t, nleft, srclen - off);
- memcpy(buf, off + (char *) &udev->descriptor, n);
- nleft -= n;
- buf += n;
- off = 0;
- } else {
- off -= srclen;
- }
-
- /* Then follows the raw descriptor entry for the current
- * configuration (config plus subsidiary descriptors).
+ /* The binary attribute begins with the device descriptor.
+ * Following that are the raw descriptor entries for all the
+ * configurations (config plus subsidiary descriptors).
*/
- if (udev->actconfig) {
- int cfgno = udev->actconfig - udev->config;
-
- srclen = __le16_to_cpu(udev->actconfig->desc.wTotalLength);
+ for (cfgno = -1; cfgno < udev->descriptor.bNumConfigurations &&
+ nleft > 0; ++cfgno) {
+ if (cfgno < 0) {
+ src = &udev->descriptor;
+ srclen = sizeof(struct usb_device_descriptor);
+ } else {
+ src = udev->rawdescriptors[cfgno];
+ srclen = __le16_to_cpu(udev->config[cfgno].desc.
+ wTotalLength);
+ }
if (off < srclen) {
- n = min_t(size_t, nleft, srclen - off);
- memcpy(buf, off + udev->rawdescriptors[cfgno], n);
+ n = min(nleft, srclen - (size_t) off);
+ memcpy(buf, src + off, n);
nleft -= n;
+ buf += n;
+ off = 0;
+ } else {
+ off -= srclen;
}
}
- usb_unlock_device(udev);
return count - nleft;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-23 11:38:45 +0000