[SeaBIOS] [PATCH 05/19] usb: Remove cntl->defaultpipe cache.

[Kevin O'Connor]

Now that all pipes use a free list, there is no need to cache the
controller's default pipe.  The regular free list provides the same
capability.

Signed-off-by: Kevin O'Connor 
---
 src/usb-ehci.c |    1 -
 src/usb-ohci.c |    1 -
 src/usb-uhci.c |    1 -
 src/usb.c      |   37 +++++++++++++++++--------------------
 src/usb.h      |    1 -
 5 files changed, 17 insertions(+), 24 deletions(-)

diff --git a/src/usb-ehci.c b/src/usb-ehci.c
index 5717dc6..0678560 100644
--- a/src/usb-ehci.c
+++ b/src/usb-ehci.c
@@ -310,7 +310,6 @@ configure_ehci(void *data)

// Find devices
     int count = check_ehci_ports(cntl);
-    free_pipe(cntl->usb.defaultpipe);
     ehci_free_pipes(cntl);
     if (count)
         // Success
diff --git a/src/usb-ohci.c b/src/usb-ohci.c
index ac1eb37..d77727e 100644
--- a/src/usb-ohci.c
+++ b/src/usb-ohci.c
@@ -249,7 +249,6 @@ configure_ohci(void *data)
         goto err;

int count = check_ohci_ports(cntl);
-    free_pipe(cntl->usb.defaultpipe);
     ohci_free_pipes(cntl);
     if (! count)
         goto err;
diff --git a/src/usb-uhci.c b/src/usb-uhci.c
index 4f7fbb4..9d46762 100644
--- a/src/usb-uhci.c
+++ b/src/usb-uhci.c
@@ -220,7 +220,6 @@ configure_uhci(void *data)

// Find devices
     int count = check_uhci_ports(cntl);
-    free_pipe(cntl->usb.defaultpipe);
     uhci_free_pipes(cntl);
     if (count)
         // Success
diff --git a/src/usb.c b/src/usb.c
index f522e1a..e7ee6bc 100644
--- a/src/usb.c
+++ b/src/usb.c
@@ -246,19 +246,16 @@ usb_set_address(struct usbhub_s *hub, int port, int speed)
     if (cntl->maxaddr >= USB_MAXADDR)
         return NULL;

-    struct usb_pipe *defpipe = cntl->defaultpipe;
-    if (!defpipe) {
-        // Create a pipe for the default address.
-        struct usb_pipe dummy;
-        memset(&dummy, 0, sizeof(dummy));
-        dummy.cntl = cntl;
-        dummy.type = cntl->type;
-        dummy.maxpacket = 8;
-        dummy.path = (u64)-1;
-        cntl->defaultpipe = defpipe = alloc_default_control_pipe(&dummy);
-        if (!defpipe)
-            return NULL;
-    }
+    // Create a pipe for the default address.
+    struct usb_pipe dummy;
+    memset(&dummy, 0, sizeof(dummy));
+    dummy.cntl = cntl;
+    dummy.type = cntl->type;
+    dummy.maxpacket = 8;
+    dummy.path = (u64)-1;
+    struct usb_pipe *defpipe = alloc_default_control_pipe(&dummy);
+    if (!defpipe)
+        return NULL;
     defpipe->speed = speed;
     if (hub->pipe) {
         if (hub->pipe->speed == USB_HIGHSPEED) {
@@ -271,6 +268,9 @@ usb_set_address(struct usbhub_s *hub, int port, int speed)
     } else {
         defpipe->tt_devaddr = defpipe->tt_port = 0;
     }
+    if (hub->pipe)
+        defpipe->path = hub->pipe->path;
+    defpipe->path = (defpipe->path << 8) | port;

msleep(USB_TIME_RSTRCY);

@@ -281,19 +281,16 @@ usb_set_address(struct usbhub_s *hub, int port, int speed)
     req.wIndex = 0;
     req.wLength = 0;
     int ret = send_default_control(defpipe, &req, NULL);
-    if (ret)
+    if (ret) {
+        free_pipe(defpipe);
         return NULL;
+    }

msleep(USB_TIME_SETADDR_RECOVERY);

cntl->maxaddr++;
     defpipe->devaddr = cntl->maxaddr;
-    struct usb_pipe *pipe = alloc_default_control_pipe(defpipe);
-    defpipe->devaddr = 0;
-    if (hub->pipe)
-        pipe->path = hub->pipe->path;
-    pipe->path = (pipe->path << 8) | port;
-    return pipe;
+    return defpipe;
 }

// Called for every found device - see if a driver is available for
diff --git a/src/usb.h b/src/usb.h
index cc32eb7..47b25b6 100644
--- a/src/usb.h
+++ b/src/usb.h
@@ -22,7 +22,6 @@ struct usb_pipe {

// Common information for usb controllers.
 struct usb_s {
-    struct usb_pipe *defaultpipe;
     struct usb_pipe *freelist;
     struct mutex_s resetlock;
     struct pci_device *pci;