From 3b7e759a4110690c9617b1ffa6a7c96a343a330d Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Thu, 18 Apr 2013 11:57:21 +0200 Subject: [PATCH] usb: better speed mismatch error reporting Report the supported speeds for device and port in the error message. Also add the speeds to the tracepoint. And while being at it drop the redundant error message in usb_desc_attach, usb_device_attach will report the error anyway. Signed-off-by: Gerd Hoffmann --- hw/usb/bus.c | 36 ++++++++++++++++++++++++++++++++---- hw/usb/desc.c | 2 -- trace-events | 2 +- 3 files changed, 33 insertions(+), 7 deletions(-) diff --git a/hw/usb/bus.c b/hw/usb/bus.c index b10c290cf4..d1827be101 100644 --- a/hw/usb/bus.c +++ b/hw/usb/bus.c @@ -417,19 +417,47 @@ void usb_release_port(USBDevice *dev) bus->nfree++; } +static void usb_mask_to_str(char *dest, size_t size, + unsigned int speedmask) +{ + static const struct { + unsigned int mask; + const char *name; + } speeds[] = { + { .mask = USB_SPEED_MASK_FULL, .name = "full" }, + { .mask = USB_SPEED_MASK_HIGH, .name = "high" }, + { .mask = USB_SPEED_MASK_SUPER, .name = "super" }, + }; + int i, pos = 0; + + for (i = 0; i < ARRAY_SIZE(speeds); i++) { + if (speeds[i].mask & speedmask) { + pos += snprintf(dest + pos, size - pos, "%s%s", + pos ? "+" : "", + speeds[i].name); + } + } +} + int usb_device_attach(USBDevice *dev) { USBBus *bus = usb_bus_from_device(dev); USBPort *port = dev->port; + char devspeed[32], portspeed[32]; assert(port != NULL); assert(!dev->attached); - trace_usb_port_attach(bus->busnr, port->path); + usb_mask_to_str(devspeed, sizeof(devspeed), dev->speedmask); + usb_mask_to_str(portspeed, sizeof(portspeed), port->speedmask); + trace_usb_port_attach(bus->busnr, port->path, + devspeed, portspeed); if (!(port->speedmask & dev->speedmask)) { - error_report("Warning: speed mismatch trying to attach " - "usb device %s to bus %s", - dev->product_desc, bus->qbus.name); + error_report("Warning: speed mismatch trying to attach" + " usb device \"%s\" (%s speed)" + " to bus \"%s\", port \"%s\" (%s speed)", + dev->product_desc, devspeed, + bus->qbus.name, port->path, portspeed); return -1; } diff --git a/hw/usb/desc.c b/hw/usb/desc.c index b389381326..fce303e9c8 100644 --- a/hw/usb/desc.c +++ b/hw/usb/desc.c @@ -522,8 +522,6 @@ void usb_desc_attach(USBDevice *dev) } else if (desc->full && (dev->port->speedmask & USB_SPEED_MASK_FULL)) { dev->speed = USB_SPEED_FULL; } else { - fprintf(stderr, "usb: port/device speed mismatch for \"%s\"\n", - usb_device_get_product_desc(dev)); return; } usb_desc_setdefaults(dev); diff --git a/trace-events b/trace-events index e587487a3b..ffaa3f472e 100644 --- a/trace-events +++ b/trace-events @@ -277,7 +277,7 @@ usb_packet_state_fault(int bus, const char *port, int ep, void *p, const char *o # hw/usb/bus.c usb_port_claim(int bus, const char *port) "bus %d, port %s" -usb_port_attach(int bus, const char *port) "bus %d, port %s" +usb_port_attach(int bus, const char *port, const char *devspeed, const char *portspeed) "bus %d, port %s, devspeed %s, portspeed %s" usb_port_detach(int bus, const char *port) "bus %d, port %s" usb_port_release(int bus, const char *port) "bus %d, port %s"