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usb: usbip tool: Fix get_nports()

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The commit 0775a9cbc6 ("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>
This commit is contained in:
Yuyang Du
2017-04-06 06:03:23 +08:00
committed by Greg Kroah-Hartman
parent 69307ccb9a
commit 37e47d5cfe
1 changed files with 5 additions and 23 deletions
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28
tools/usb/usbip/libsrc/vhci_driver.c
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@@ -123,33 +123,15 @@ static int refresh_imported_device_list(void)
static int get_nports(void) static int get_nports(void)
{ {
char *c; const char *attr_nports;
int nports = 0;
const char *attr_status;
attr_status = udev_device_get_sysattr_value(vhci_driver->hc_device, attr_nports = udev_device_get_sysattr_value(vhci_driver->hc_device, "nports");
"status"); if (!attr_nports) {
if (!attr_status) { err("udev_device_get_sysattr_value nports failed");
err("udev_device_get_sysattr_value failed");
return -1; return -1;
} }
/* skip a header line */ return (int)strtoul(attr_nports, NULL, 10);
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;
} }
/* /*