From: Uwe Hermann <redacted>
Date: Sat, 21 Nov 2015 19:27:25 +0000 (+0100)
Subject: sr_usb_find(): Increase the 'bus' limit to 255.
X-Git-Tag: libsigrok-0.4.0~112
X-Git-Url: https://sigrok.org/gitweb/?a=commitdiff_plain;h=e4ce146fefe7cfd475b9d8fdec1101b188b746db;p=libsigrok.git

sr_usb_find(): Increase the 'bus' limit to 255.

On some systems it can happen that the USB 'bus' number is a lot larger
than 64, but sr_usb_find() currently errors out if it is > 64.

Example:
Bus 250 Device 006: ID 1ab1:04ce 1ab1 DS1000Z Series[...]

Increase that limit so that the code will work everywhere. This bus number
is queried via libusb_get_bus_number() which returns an uint8_t, so we're
limiting to 255 here.

Thanks to 'ssi' on IRC for reporting the issue.
---

diff --git a/src/usb.c b/src/usb.c
index ba56e864..02510cae 100644
--- a/src/usb.c
+++ b/src/usb.c
@@ -359,7 +359,7 @@ SR_PRIV GSList *sr_usb_find(libusb_context *usb_ctx, const char *conn)
 		return NULL;
 	}
 
-	if (bus > 64) {
+	if (bus > 255) {
 		sr_err("Invalid bus specified: %d.", bus);
 		return NULL;
 	}