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From 39aa3c69f61bba28856a3eef3fe4ab37a3968e88 Mon Sep 17 00:00:00 2001
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From: Jonathon Jongsma <jjongsma@redhat.com>
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Date: Thu, 10 Aug 2017 10:41:57 -0500
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Subject: [PATCH usbredir] Don't print warning when resetting a missing device
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When usbredirhost clears the current device, it resets the device and
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attempts to re-attach the kernel driver for the device. The current
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device is cleared when the API user explicitly sets a new device with
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usbredirhost_set_device(). However, some API users call
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usbredirhost_set_device(..., NULL) to clear the current device when the
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redirected device has been unplugged. In this scenario, resetting the
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device will fail and print a warning to the terminal. Since this is an
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expected scenario, we should simply handle it rather than printing an
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warning.
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Resolves: rhbz#1442963
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Signed-off-by: Jonathon Jongsma <jjongsma@redhat.com>
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Acked-by: Frediano Ziglio <fziglio@redhat.com>
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---
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usbredirhost/usbredirhost.c | 6 +++++-
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1 file changed, 5 insertions(+), 1 deletion(-)
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diff --git a/usbredirhost/usbredirhost.c b/usbredirhost/usbredirhost.c
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index a6bf8b3..3666227 100644
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--- a/usbredirhost/usbredirhost.c
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+++ b/usbredirhost/usbredirhost.c
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@@ -604,7 +604,11 @@ static void usbredirhost_release(struct usbredirhost *host, int attach_drivers)
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if (!(host->quirks & QUIRK_DO_NOT_RESET)) {
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r = libusb_reset_device(host->handle);
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if (r != 0) {
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- ERROR("error resetting device: %s", libusb_error_name(r));
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+ /* if we're releasing the device because it was removed, resetting
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+ * will fail. Don't print a warning in this situation */
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+ if (r != LIBUSB_ERROR_NO_DEVICE) {
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+ ERROR("error resetting device: %s", libusb_error_name(r));
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+ }
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return;
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}
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}
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--
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2.13.6
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