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Thu, 5 Nov 2020 13:41:17 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-114-66.ams2.redhat.com [10.36.114.66]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7A7705D9D5; Thu, 5 Nov 2020 13:41:17 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id CC6B09AFB; Thu, 5 Nov 2020 14:41:12 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PATCH 6/6] xhci: move sanity checks Date: Thu, 5 Nov 2020 14:41:12 +0100 Message-Id: <20201105134112.25119-7-kraxel@redhat.com> In-Reply-To: <20201105134112.25119-1-kraxel@redhat.com> References: <20201105134112.25119-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/11/05 01:14:53 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" The v variable goes negative for reg < 0x20. Reorder the code to first sanity check then calculate v and assign intr to make sanity checkers happy. Buglink: https://bugs.launchpad.net/qemu/+bug/1902112 Signed-off-by: Gerd Hoffmann Reviewed-by: Philippe Mathieu-Daudé --- hw/usb/hcd-xhci.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/hw/usb/hcd-xhci.c b/hw/usb/hcd-xhci.c index d00bb0141dac..6dfb17cbe915 100644 --- a/hw/usb/hcd-xhci.c +++ b/hw/usb/hcd-xhci.c @@ -3010,14 +3010,17 @@ static void xhci_runtime_write(void *ptr, hwaddr reg, uint64_t val, unsigned size) { XHCIState *xhci = ptr; - int v = (reg - 0x20) / 0x20; - XHCIInterrupter *intr = &xhci->intr[v]; + XHCIInterrupter *intr; + int v; + trace_usb_xhci_runtime_write(reg, val); if (reg < 0x20) { trace_usb_xhci_unimplemented("runtime write", reg); return; } + v = (reg - 0x20) / 0x20; + intr = &xhci->intr[v]; switch (reg & 0x1f) { case 0x00: /* IMAN */