diff options
| author | Heiner Kallweit <hkallweit1@gmail.com> | 2016-01-25 22:30:30 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-04 00:26:30 +0300 |
| commit | 5363de75307e333d89df7531f9dd8310d973ecdb (patch) | |
| tree | 5c90ec1dbcf6d1626984ec6306db7d73ee8dd3ab /drivers/usb/core/devices.c | |
| parent | d78540419866887345cec480016b0f87f6a5aca2 (diff) | |
| download | linux-5363de75307e333d89df7531f9dd8310d973ecdb.tar.xz | |
usb: core: switch bus numbering to using idr
USB bus numbering is based on directly dealing with bitmaps and
defines a separate list of busses.
This can be simplified and unified by using existing idr functionality.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/devices.c')
| -rw-r--r-- | drivers/usb/core/devices.c | 10 |
1 files changed, 2 insertions, 8 deletions
diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index b35a6a52210f..6118a04f0b84 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -110,13 +110,6 @@ static const char format_endpt[] = /* E: Ad=xx(s) Atr=xx(ssss) MxPS=dddd Ivl=D?s */ "E: Ad=%02x(%c) Atr=%02x(%-4s) MxPS=%4d Ivl=%d%cs\n"; - -/* - * Need access to the driver and USB bus lists. - * extern struct list_head usb_bus_list; - * However, these will come from functions that return ptrs to each of them. - */ - /* * Wait for an connect/disconnect event to happen. We initialize * the event counter with an odd number, and each event will increment @@ -618,6 +611,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, struct usb_bus *bus; ssize_t ret, total_written = 0; loff_t skip_bytes = *ppos; + int id; if (*ppos < 0) return -EINVAL; @@ -628,7 +622,7 @@ static ssize_t usb_device_read(struct file *file, char __user *buf, mutex_lock(&usb_bus_list_lock); /* print devices for all busses */ - list_for_each_entry(bus, &usb_bus_list, bus_list) { + idr_for_each_entry(&usb_bus_idr, bus, id) { /* recurse through all children of the root hub */ if (!bus_to_hcd(bus)->rh_registered) continue; |