From 3c19d124c7521aeef6e4f28755c649a58c2860b6 Mon Sep 17 00:00:00 2001 From: Nikias Bassen Date: Thu, 20 Aug 2009 00:11:25 +0200 Subject: Only try to set configuration if needed. --- usbmuxd/usb-linux.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) (limited to 'usbmuxd/usb-linux.c') diff --git a/usbmuxd/usb-linux.c b/usbmuxd/usb-linux.c index 6e99a95..9634d14 100644 --- a/usbmuxd/usb-linux.c +++ b/usbmuxd/usb-linux.c @@ -279,11 +279,19 @@ static int usb_discover(void) usbmuxd_log(LL_WARNING, "Could not open device %d-%d: %d", bus, address, res); continue; } - if((res = libusb_set_configuration(handle, USB_CONFIGURATION)) != 0) { - usbmuxd_log(LL_WARNING, "Could not set configuration %d for device %d-%d: %d", USB_CONFIGURATION, bus, address, res); + int current_config = 0; + if((res = libusb_get_configuration(handle, ¤t_config)) != 0) { + usbmuxd_log(LL_WARNING, "Could not get configuration for device %d-%d: %d", bus, address, res); libusb_close(handle); continue; } + if (current_config != devdesc.bNumConfigurations) { + if((res = libusb_set_configuration(handle, devdesc.bNumConfigurations)) != 0) { + usbmuxd_log(LL_WARNING, "Could not set configuration %d for device %d-%d: %d", devdesc.bNumConfigurations, bus, address, res); + libusb_close(handle); + continue; + } + } if((res = libusb_claim_interface(handle, USB_INTERFACE)) != 0) { usbmuxd_log(LL_WARNING, "Could not claim interface %d for device %d-%d: %d", USB_INTERFACE, bus, address, res); libusb_close(handle); -- cgit v1.1-32-gdbae