usb: usb_ep_get() fixes
-----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABAgAGBQJcbTZcAAoJEEy22O7T6HE4VzIP/A0YgJA9qsRWiNeTjbXZz5Hm U7x3W9l+B8QZrzT1Ib9wXDKcMn7dolT9JIWZSOQHX6LJIaMUvLyM3eFye7sC3k4A 9TKeBDH7il+2YlhjGjQQodq/qNhK1krEKdit6Ttr/IAPLDXMsPOWMqlrlicH2sny EZvRiCiKNreR/Sn0BDpsnasVoNL9NvKbURTNG+EmZJWprYAE+IPKfL+Vcy5MvNKe rVPk8LvuzEBupcfbyZQBcCNi9rQGJUFEYSDt4bbUI/EZYGKeLIMHCuTiWj+T34wN FHZSKpOd8+uYuHLTQjRHdH/jjoRMXHAMIhE2JxbDYVKxDa9nhKlUtbw45z4S9Obl gdtDqum3WdP2OnnKGkl0gU2JDGPzavYWyn+ii3UUsFfXKhJnnlUNKxdn2KWu0jjf Z2mr76Hf7IsB9VBzhjrnLmINtuLoc51kIBFSJF9anU2bisfhRKe151hwaHnTtJH7 HaJWKhbrckny4Q9FyAeL3c/gthzJIOTPbMCghTJHbt2X7vO5XxDTTU61rnh47eSS wMtm8/7iJHol86mJJ/CgcuMHSe/PDHF3HeeF0thdYKZ8Sq9VyO/cRxqD6o8OuqqH pEI52C2PKiDUMxj2Q4CSZM8p0mt5zMLGGrej1fa1rDBm4As05f7LJNZ2ez2P+w7G AIBEfKcWtoIWB01x3Uqp =fahv -----END PGP SIGNATURE----- Merge remote-tracking branch 'remotes/kraxel/tags/usb-20190220-pull-request' into staging usb: usb_ep_get() fixes # gpg: Signature made Wed 20 Feb 2019 11:13:32 GMT # gpg: using RSA key 4CB6D8EED3E87138 # gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full] # gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full] # gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full] # Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138 * remotes/kraxel/tags/usb-20190220-pull-request: usb: remove unnecessary NULL device check from usb_ep_get() usb: add device checks before redirector calls to usb_ep_get() usb: check device is not NULL before calling usb_ep_get() uhci: check device is not NULL before calling usb_ep_get() ohci: check device is not NULL before calling usb_ep_get() ehci: check device is not NULL before calling usb_ep_get() xhci: check device is not NULL before calling usb_ep_get() xhci: add asserts to help with static code analysis usb: rearrange usb_ep_get() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
commit
039e406603
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@ -717,15 +717,13 @@ struct USBEndpoint *usb_ep_get(USBDevice *dev, int pid, int ep)
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{
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struct USBEndpoint *eps;
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if (dev == NULL) {
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return NULL;
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}
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eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out;
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assert(dev != NULL);
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if (ep == 0) {
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return &dev->ep_ctl;
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}
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assert(pid == USB_TOKEN_IN || pid == USB_TOKEN_OUT);
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assert(ep > 0 && ep <= USB_MAX_ENDPOINTS);
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eps = (pid == USB_TOKEN_IN) ? dev->ep_in : dev->ep_out;
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return eps + ep - 1;
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}
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@ -1439,9 +1439,12 @@ static int ehci_process_itd(EHCIState *ehci,
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qemu_sglist_add(&ehci->isgl, ptr1 + off, len);
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}
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pid = dir ? USB_TOKEN_IN : USB_TOKEN_OUT;
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dev = ehci_find_device(ehci, devaddr);
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if (dev == NULL) {
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ehci_trace_guest_bug(ehci, "no device found");
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return -1;
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}
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pid = dir ? USB_TOKEN_IN : USB_TOKEN_OUT;
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ep = usb_ep_get(dev, pid, endp);
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if (ep && ep->type == USB_ENDPOINT_XFER_ISOC) {
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usb_packet_setup(&ehci->ipacket, pid, ep, 0, addr, false,
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@ -628,11 +628,11 @@ static void musb_packet(MUSBState *s, MUSBEndPoint *ep,
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/* A wild guess on the FADDR semantics... */
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dev = usb_find_device(&s->port, ep->faddr[idx]);
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uep = usb_ep_get(dev, pid, ep->type[idx] & 0xf);
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id = pid;
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if (uep) {
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id |= (dev->addr << 16) | (uep->nr << 8);
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if (dev == NULL) {
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return;
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}
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uep = usb_ep_get(dev, pid, ep->type[idx] & 0xf);
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id = pid | (dev->addr << 16) | (uep->nr << 8);
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usb_packet_setup(&ep->packey[dir].p, pid, uep, 0, id, false, true);
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usb_packet_addbuf(&ep->packey[dir].p, ep->buf[idx], len);
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ep->packey[dir].ep = ep;
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@ -848,6 +848,10 @@ static int ohci_service_iso_td(OHCIState *ohci, struct ohci_ed *ed,
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bool int_req = relative_frame_number == frame_count &&
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OHCI_BM(iso_td.flags, TD_DI) == 0;
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dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
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if (dev == NULL) {
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trace_usb_ohci_td_dev_error();
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return 1;
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}
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ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
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usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, false, int_req);
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usb_packet_addbuf(&ohci->usb_packet, ohci->usb_buf, len);
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@ -1071,6 +1075,10 @@ static int ohci_service_td(OHCIState *ohci, struct ohci_ed *ed)
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return 1;
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}
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dev = ohci_find_device(ohci, OHCI_BM(ed->flags, ED_FA));
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if (dev == NULL) {
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trace_usb_ohci_td_dev_error();
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return 1;
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}
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ep = usb_ep_get(dev, pid, OHCI_BM(ed->flags, ED_EN));
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usb_packet_setup(&ohci->usb_packet, pid, ep, 0, addr, !flag_r,
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OHCI_BM(td.flags, TD_DI) == 0);
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@ -858,13 +858,15 @@ static int uhci_handle_td(UHCIState *s, UHCIQueue *q, uint32_t qh_addr,
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/* Allocate new packet */
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if (q == NULL) {
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USBDevice *dev = uhci_find_device(s, (td->token >> 8) & 0x7f);
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USBEndpoint *ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf);
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USBDevice *dev;
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USBEndpoint *ep;
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if (ep == NULL) {
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dev = uhci_find_device(s, (td->token >> 8) & 0x7f);
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if (dev == NULL) {
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return uhci_handle_td_error(s, td, td_addr, USB_RET_NODEV,
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int_mask);
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}
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ep = usb_ep_get(dev, pid, (td->token >> 15) & 0xf);
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q = uhci_queue_new(s, qh_addr, td, ep);
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}
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async = uhci_async_alloc(q, td_addr);
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@ -2607,6 +2607,7 @@ static void xhci_port_update(XHCIPort *port, int is_detach)
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{
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uint32_t pls = PLS_RX_DETECT;
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assert(port);
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port->portsc = PORTSC_PP;
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if (!is_detach && xhci_port_have_device(port)) {
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port->portsc |= PORTSC_CCS;
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@ -3215,6 +3216,7 @@ static void xhci_wakeup(USBPort *usbport)
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XHCIState *xhci = usbport->opaque;
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XHCIPort *port = xhci_lookup_port(xhci, usbport);
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assert(port);
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if (get_field(port->portsc, PORTSC_PLS) != PLS_U3) {
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return;
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}
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@ -3274,10 +3276,10 @@ static USBEndpoint *xhci_epid_to_usbep(XHCIEPContext *epctx)
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return NULL;
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}
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uport = epctx->xhci->slots[epctx->slotid - 1].uport;
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token = (epctx->epid & 1) ? USB_TOKEN_IN : USB_TOKEN_OUT;
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if (!uport) {
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if (!uport || !uport->dev) {
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return NULL;
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}
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token = (epctx->epid & 1) ? USB_TOKEN_IN : USB_TOKEN_OUT;
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return usb_ep_get(uport->dev, token, epctx->epid >> 1);
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}
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@ -1728,6 +1728,7 @@ static void usbredir_ep_info(void *priv,
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USBRedirDevice *dev = priv;
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int i;
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assert(dev != NULL);
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for (i = 0; i < MAX_ENDPOINTS; i++) {
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dev->endpoint[i].type = ep_info->type[i];
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dev->endpoint[i].interval = ep_info->interval[i];
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@ -2125,7 +2126,7 @@ static int usbredir_post_load(void *priv, int version_id)
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{
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USBRedirDevice *dev = priv;
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if (dev->parser == NULL) {
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if (dev == NULL || dev->parser == NULL) {
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return 0;
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}
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