From a4b5d606b957c6a58e991de63fe999492de1ab92 Mon Sep 17 00:00:00 2001 From: Heiner Kallweit Date: Wed, 3 Feb 2016 23:35:23 +0100 Subject: [PATCH] usb: core: rename mutex usb_bus_list_lock to usb_bus_idr_lock Now that usb_bus_list has been removed and switched to idr rename the related mutex accordingly. Signed-off-by: Heiner Kallweit Signed-off-by: Greg Kroah-Hartman --- drivers/usb/core/devices.c | 6 +++--- drivers/usb/core/hcd.c | 30 +++++++++++++++--------------- drivers/usb/core/hub.c | 4 ++-- drivers/usb/mon/mon_main.c | 4 ++-- include/linux/usb/hcd.h | 2 +- 5 files changed, 23 insertions(+), 23 deletions(-) diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index 6118a04f0b84..ef04b50e6bbb 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -620,7 +620,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, if (!access_ok(VERIFY_WRITE, buf, nbytes)) return -EFAULT; - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); /* print devices for all busses */ idr_for_each_entry(&usb_bus_idr, bus, id) { /* recurse through all children of the root hub */ @@ -631,12 +631,12 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, bus->root_hub, bus, 0, 0, 0); usb_unlock_device(bus->root_hub); if (ret < 0) { - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return ret; } total_written += ret; } - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return total_written; } diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index cf3eb22dbeb4..0b8a91004737 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -97,8 +97,8 @@ EXPORT_SYMBOL_GPL (usb_bus_idr); #define USB_MAXBUS 64 /* used when updating list of hcds */ -DEFINE_MUTEX(usb_bus_list_lock); /* exported only for usbfs */ -EXPORT_SYMBOL_GPL (usb_bus_list_lock); +DEFINE_MUTEX(usb_bus_idr_lock); /* exported only for usbfs */ +EXPORT_SYMBOL_GPL (usb_bus_idr_lock); /* used for controlling access to virtual root hubs */ static DEFINE_SPINLOCK(hcd_root_hub_lock); @@ -1014,14 +1014,14 @@ static int usb_register_bus(struct usb_bus *bus) int result = -E2BIG; int busnum; - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); busnum = idr_alloc(&usb_bus_idr, bus, 1, USB_MAXBUS, GFP_KERNEL); if (busnum < 0) { pr_err("%s: failed to get bus number\n", usbcore_name); goto error_find_busnum; } bus->busnum = busnum; - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); usb_notify_add_bus(bus); @@ -1030,7 +1030,7 @@ static int usb_register_bus(struct usb_bus *bus) return 0; error_find_busnum: - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return result; } @@ -1051,9 +1051,9 @@ static void usb_deregister_bus (struct usb_bus *bus) * controller code, as well as having it call this when cleaning * itself up */ - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); idr_remove(&usb_bus_idr, bus->busnum); - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); usb_notify_remove_bus(bus); } @@ -1083,12 +1083,12 @@ static int register_root_hub(struct usb_hcd *hcd) set_bit (devnum, usb_dev->bus->devmap.devicemap); usb_set_device_state(usb_dev, USB_STATE_ADDRESS); - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); usb_dev->ep0.desc.wMaxPacketSize = cpu_to_le16(64); retval = usb_get_device_descriptor(usb_dev, USB_DT_DEVICE_SIZE); if (retval != sizeof usb_dev->descriptor) { - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); dev_dbg (parent_dev, "can't read %s device descriptor %d\n", dev_name(&usb_dev->dev), retval); return (retval < 0) ? retval : -EMSGSIZE; @@ -1099,7 +1099,7 @@ static int register_root_hub(struct usb_hcd *hcd) if (!retval) { usb_dev->lpm_capable = usb_device_supports_lpm(usb_dev); } else if (usb_dev->speed >= USB_SPEED_SUPER) { - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); dev_dbg(parent_dev, "can't read %s bos descriptor %d\n", dev_name(&usb_dev->dev), retval); return retval; @@ -1119,7 +1119,7 @@ static int register_root_hub(struct usb_hcd *hcd) if (HCD_DEAD(hcd)) usb_hc_died (hcd); /* This time clean up */ } - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return retval; } @@ -2885,9 +2885,9 @@ int usb_add_hcd(struct usb_hcd *hcd, #ifdef CONFIG_PM cancel_work_sync(&hcd->wakeup_work); #endif - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); usb_disconnect(&rhdev); /* Sets rhdev to NULL */ - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); err_register_root_hub: hcd->rh_pollable = 0; clear_bit(HCD_FLAG_POLL_RH, &hcd->flags); @@ -2954,9 +2954,9 @@ void usb_remove_hcd(struct usb_hcd *hcd) cancel_work_sync(&hcd->wakeup_work); #endif - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); usb_disconnect(&rhdev); /* Sets rhdev to NULL */ - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); /* * tasklet_kill() isn't needed here because: diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index f912fe6bbc0b..3d46d03a785b 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2145,7 +2145,7 @@ static void hub_disconnect_children(struct usb_device *udev) * Something got disconnected. Get rid of it and all of its children. * * If *pdev is a normal device then the parent hub must already be locked. - * If *pdev is a root hub then the caller must hold the usb_bus_list_lock, + * If *pdev is a root hub then the caller must hold the usb_bus_idr_lock, * which protects the set of root hubs as well as the list of buses. * * Only hub drivers (including virtual root hub drivers for host @@ -2443,7 +2443,7 @@ static void set_usb_port_removable(struct usb_device *udev) * enumerated. The device descriptor is available, but not descriptors * for any device configuration. The caller must have locked either * the parent hub (if udev is a normal device) or else the - * usb_bus_list_lock (if udev is a root hub). The parent's pointer to + * usb_bus_idr_lock (if udev is a root hub). The parent's pointer to * udev has already been installed, but udev is not yet visible through * sysfs or other filesystem code. * diff --git a/drivers/usb/mon/mon_main.c b/drivers/usb/mon/mon_main.c index 9b87efb0e50d..33ff49c4cea4 100644 --- a/drivers/usb/mon/mon_main.c +++ b/drivers/usb/mon/mon_main.c @@ -365,11 +365,11 @@ static int __init mon_init(void) } // MOD_INC_USE_COUNT(which_module?); - mutex_lock(&usb_bus_list_lock); + mutex_lock(&usb_bus_idr_lock); idr_for_each_entry(&usb_bus_idr, ubus, id) mon_bus_init(ubus); usb_register_notify(&mon_nb); - mutex_unlock(&usb_bus_list_lock); + mutex_unlock(&usb_bus_idr_lock); return 0; err_reg: diff --git a/include/linux/usb/hcd.h b/include/linux/usb/hcd.h index c293dd044599..b98f831dcda3 100644 --- a/include/linux/usb/hcd.h +++ b/include/linux/usb/hcd.h @@ -632,7 +632,7 @@ extern void usb_set_device_state(struct usb_device *udev, /* exported only within usbcore */ extern struct idr usb_bus_idr; -extern struct mutex usb_bus_list_lock; +extern struct mutex usb_bus_idr_lock; extern wait_queue_head_t usb_kill_urb_queue; -- GitLab