diff options
author | David S. Miller <davem@davemloft.net> | 2008-10-11 12:39:35 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2008-10-11 12:39:35 -0700 |
commit | 56c5d900dbb8e042bfad035d18433476931d8f93 (patch) | |
tree | 00b793965beeef10db03e0ff021d2d965c410759 /drivers/usb/core/hub.c | |
parent | 4dd95b63ae25c5cad6986829b5e8788e9faa0330 (diff) | |
parent | ead9d23d803ea3a73766c3cb27bf7563ac8d7266 (diff) | |
download | op-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.zip op-kernel-dev-56c5d900dbb8e042bfad035d18433476931d8f93.tar.gz |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
sound/core/memalloc.c
Diffstat (limited to 'drivers/usb/core/hub.c')
-rw-r--r-- | drivers/usb/core/hub.c | 39 |
1 files changed, 17 insertions, 22 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 6a5cb01..d999638 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2683,35 +2683,17 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, USB_PORT_STAT_C_ENABLE); #endif - /* Try to use the debounce delay for protection against - * port-enable changes caused, for example, by EMI. - */ - if (portchange & (USB_PORT_STAT_C_CONNECTION | - USB_PORT_STAT_C_ENABLE)) { - status = hub_port_debounce(hub, port1); - if (status < 0) { - if (printk_ratelimit()) - dev_err (hub_dev, "connect-debounce failed, " - "port %d disabled\n", port1); - portstatus &= ~USB_PORT_STAT_CONNECTION; - } else { - portstatus = status; - } - } - /* Try to resuscitate an existing device */ udev = hdev->children[port1-1]; if ((portstatus & USB_PORT_STAT_CONNECTION) && udev && udev->state != USB_STATE_NOTATTACHED) { - usb_lock_device(udev); if (portstatus & USB_PORT_STAT_ENABLE) { status = 0; /* Nothing to do */ - } else if (!udev->persist_enabled) { - status = -ENODEV; /* Mustn't resuscitate */ #ifdef CONFIG_USB_SUSPEND - } else if (udev->state == USB_STATE_SUSPENDED) { + } else if (udev->state == USB_STATE_SUSPENDED && + udev->persist_enabled) { /* For a suspended device, treat this as a * remote wakeup event. */ @@ -2726,7 +2708,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, #endif } else { - status = usb_reset_device(udev); + status = -ENODEV; /* Don't resuscitate */ } usb_unlock_device(udev); @@ -2741,6 +2723,19 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, usb_disconnect(&hdev->children[port1-1]); clear_bit(port1, hub->change_bits); + if (portchange & (USB_PORT_STAT_C_CONNECTION | + USB_PORT_STAT_C_ENABLE)) { + status = hub_port_debounce(hub, port1); + if (status < 0) { + if (printk_ratelimit()) + dev_err(hub_dev, "connect-debounce failed, " + "port %d disabled\n", port1); + portstatus &= ~USB_PORT_STAT_CONNECTION; + } else { + portstatus = status; + } + } + /* Return now if debouncing failed or nothing is connected */ if (!(portstatus & USB_PORT_STAT_CONNECTION)) { @@ -2748,7 +2743,7 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1, if ((wHubCharacteristics & HUB_CHAR_LPSM) < 2 && !(portstatus & (1 << USB_PORT_FEAT_POWER))) set_port_feature(hdev, port1, USB_PORT_FEAT_POWER); - + if (portstatus & USB_PORT_STAT_ENABLE) goto done; return; |