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authorYuyang Du <yuyang.du@intel.com>2017-04-06 01:03:23 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2017-04-08 13:17:42 +0300
commit37e47d5cfeec1dcc8246401ce84f2780f99ce990 (patch)
tree5b77bd129a98f725deed9ddc69149a63cbc301b0 /tools/usb/usbip/libsrc/vhci_driver.c
parent69307ccb9ad7ccb653e332de68effdeaaab6907d (diff)
downloadlinux-37e47d5cfeec1dcc8246401ce84f2780f99ce990.tar.xz
usb: usbip tool: Fix get_nports()
The commit 0775a9cbc694e8c72 ("usbip: vhci extension: modifications to vhci driver") introduced multiple controllers, and nports as a sys file, and claimed to read the nports from it, but it didn't. In addition, the get_nports() has been so wrong that even with 8 port lines for instance, it gets 7 (I am guessing it is due to a '\n' mess). Nevertheless, we fix it by reading the nports attribute. Reviewed-by: Krzysztof Opasiak <k.opasiak@samsung.com> Signed-off-by: Yuyang Du <yuyang.du@intel.com> Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/usb/usbip/libsrc/vhci_driver.c')
-rw-r--r--tools/usb/usbip/libsrc/vhci_driver.c28
1 files changed, 5 insertions, 23 deletions
diff --git a/tools/usb/usbip/libsrc/vhci_driver.c b/tools/usb/usbip/libsrc/vhci_driver.c
index ad9204773533..f659c146cdc8 100644
--- a/tools/usb/usbip/libsrc/vhci_driver.c
+++ b/tools/usb/usbip/libsrc/vhci_driver.c
@@ -123,33 +123,15 @@ static int refresh_imported_device_list(void)
static int get_nports(void)
{
- char *c;
- int nports = 0;
- const char *attr_status;
+ const char *attr_nports;
- attr_status = udev_device_get_sysattr_value(vhci_driver->hc_device,
- "status");
- if (!attr_status) {
- err("udev_device_get_sysattr_value failed");
+ attr_nports = udev_device_get_sysattr_value(vhci_driver->hc_device, "nports");
+ if (!attr_nports) {
+ err("udev_device_get_sysattr_value nports failed");
return -1;
}
- /* skip a header line */
- c = strchr(attr_status, '\n');
- if (!c)
- return 0;
- c++;
-
- while (*c != '\0') {
- /* go to the next line */
- c = strchr(c, '\n');
- if (!c)
- return nports;
- c++;
- nports += 1;
- }
-
- return nports;
+ return (int)strtoul(attr_nports, NULL, 10);
}
/*