diff --git a/libusb/descriptor.c b/libusb/descriptor.c
index 74d6de5..0b0e314 100644
--- a/libusb/descriptor.c
+++ b/libusb/descriptor.c
@@ -1174,7 +1174,7 @@ int API_EXPORTED libusb_get_string_descriptor_ascii(libusb_device_handle *dev_ha
 		return LIBUSB_ERROR_IO;
 
 	if (tbuf[0] > r)
-		return LIBUSB_ERROR_IO;
+		tbuf[0] = r;
 
 	di = 0;
 	for (si = 2; si < tbuf[0]; si += 2) {
-- 
2.17.0

='/'><img src='https://git.koszko.org/cgit-static/cgit.png' alt='cgit logo'/></a></td>
<td class='main'><a href='/'>index</a> : <a href='/guix/'>guix</a></td><td class='form'><form method='get'>
<input type='hidden' name='id' value='33783e36952a03b3d9fed9087e3476e50249aeed'/><select name='h' onchange='this.form.submit();'>
<option value='koszko' selected='selected'>koszko</option>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=33783e36952a03b3d9fed9087e3476e50249aeed'>refs</a><a class='active' href='/guix/log/tests/ipfs.scm'>log</a><a href='/guix/tree/tests/ipfs.scm?id=33783e36952a03b3d9fed9087e3476e50249aeed'>tree</a><a href='/guix/commit/tests/ipfs.scm?id=33783e36952a03b3d9fed9087e3476e50249aeed'>commit</a><a href='/guix/diff/tests/ipfs.scm?id=33783e36952a03b3d9fed9087e3476e50249aeed'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/tests/ipfs.scm'>
<input type='hidden' name='id' value='33783e36952a03b3d9fed9087e3476e50249aeed'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=33783e36952a03b3d9fed9087e3476e50249aeed'>root</a>/<a href='/guix/log/tests?id=33783e36952a03b3d9fed9087e3476e50249aeed'>tests</a>/<a href='/guix/log/tests/ipfs.scm?id=33783e36952a03b3d9fed9087e3476e50249aeed'>ipfs.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/ipfs.scm?id=33783e36952a03b3d9fed9087e3476e50249aeed&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2021-04-12 18:42:22 +0200'>2021-04-12</span></td><td><a href='/guix/commit/tests/ipfs.scm?id=b18f45c21f5d697d384a7bd5c9d3ee314bba9e35'>Add (guix ipfs).</a><span class='msg-avail'>...<span class='msg-tooltip'>This module allows for communicating with the IPFS
gateway over the HTTP interface.  The commit has been
cherry-picked from &lt;https://issues.guix.gnu.org/33899&gt;.

The procedures for adding and restoring file trees have
been removed as according to a reply issue 33899, a different
format will be used.  The procedure 'add-data' has been
exported as it will be used in the system test for IPFS.

* guix/ipfs.scm: New file.
* Makefile.am (MODULES): Add it.

Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Ludovic Courtès</td></tr>