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authorRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:14:24 +0100
committerRichard Purdie <rpurdie@linux.intel.com>2010-08-27 15:29:45 +0100
commit29d6678fd546377459ef75cf54abeef5b969b5cf (patch)
tree8edd65790e37a00d01c3f203f773fe4b5012db18 /meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0017-musb_host-refactor-URB-giveback.patch
parentda49de6885ee1bc424e70bc02f21f6ab920efb55 (diff)
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Major layout change to the packages directory
Having one monolithic packages directory makes it hard to find things and is generally overwhelming. This commit splits it into several logical sections roughly based on function, recipes.txt gives more information about the classifications used. The opportunity is also used to switch from "packages" to "recipes" as used in OpenEmbedded as the term "packages" can be confusing to people and has many different meanings. Not all recipes have been classified yet, this is just a first pass at separating things out. Some packages are moved to meta-extras as they're no longer actively used or maintained. Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0017-musb_host-refactor-URB-giveback.patch')
-rw-r--r--meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0017-musb_host-refactor-URB-giveback.patch132
1 files changed, 132 insertions, 0 deletions
diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0017-musb_host-refactor-URB-giveback.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0017-musb_host-refactor-URB-giveback.patch
new file mode 100644
index 000000000..4a520dff8
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0017-musb_host-refactor-URB-giveback.patch
@@ -0,0 +1,132 @@
+From 013056a09afd324e729d64b9a0e66a004604e1d6 Mon Sep 17 00:00:00 2001
+From: Sergei Shtylyov <sshtylyov-hkdhdckH98+B+jHODAdFcQ@public.gmane.org>
+Date: Fri, 27 Mar 2009 12:58:31 -0700
+Subject: [PATCH] musb_host: refactor URB giveback
+
+As musb_advance_schedule() is now the only remaning
+caller of musb_giveback() (and the only valid context
+of such call), just fold the latter into the former
+and then rename __musb_giveback() into musb_giveback().
+
+This is a net minor shrink.
+
+Signed-off-by: Sergei Shtylyov <sshtylyov-hkdhdckH98+B+jHODAdFcQ@public.gmane.org>
+Signed-off-by: David Brownell <dbrownell-Rn4VEauK+AKRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
+---
+ drivers/usb/musb/musb_host.c | 54 +++++++++++++++--------------------------
+ 1 files changed, 20 insertions(+), 34 deletions(-)
+
+diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
+index bc89079..e833959 100644
+--- a/drivers/usb/musb/musb_host.c
++++ b/drivers/usb/musb/musb_host.c
+@@ -292,9 +292,8 @@ start:
+ }
+ }
+
+-/* caller owns controller lock, irqs are blocked */
+-static void
+-__musb_giveback(struct musb *musb, struct urb *urb, int status)
++/* Context: caller owns controller lock, IRQs are blocked */
++static void musb_giveback(struct musb *musb, struct urb *urb, int status)
+ __releases(musb->lock)
+ __acquires(musb->lock)
+ {
+@@ -347,14 +346,22 @@ static inline void musb_save_toggle(struct musb_qh *qh, int is_in,
+ usb_settoggle(urb->dev, qh->epnum, !is_in, csr ? 1 : 0);
+ }
+
+-/* caller owns controller lock, irqs are blocked */
+-static struct musb_qh *
+-musb_giveback(struct musb_qh *qh, struct urb *urb, int status)
++/*
++ * Advance this hardware endpoint's queue, completing the specified URB and
++ * advancing to either the next URB queued to that qh, or else invalidating
++ * that qh and advancing to the next qh scheduled after the current one.
++ *
++ * Context: caller owns controller lock, IRQs are blocked
++ */
++static void musb_advance_schedule(struct musb *musb, struct urb *urb,
++ struct musb_hw_ep *hw_ep, int is_in)
+ {
++ struct musb_qh *qh = musb_ep_get_qh(hw_ep, is_in);
+ struct musb_hw_ep *ep = qh->hw_ep;
+- struct musb *musb = ep->musb;
+- int is_in = usb_pipein(urb->pipe);
+ int ready = qh->is_ready;
++ int status;
++
++ status = (urb->status == -EINPROGRESS) ? 0 : urb->status;
+
+ /* save toggle eagerly, for paranoia */
+ switch (qh->type) {
+@@ -363,13 +370,13 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status)
+ musb_save_toggle(qh, is_in, urb);
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+- if (status == 0 && urb->error_count)
++ if (urb->error_count)
+ status = -EXDEV;
+ break;
+ }
+
+ qh->is_ready = 0;
+- __musb_giveback(musb, urb, status);
++ musb_giveback(musb, urb, status);
+ qh->is_ready = ready;
+
+ /* reclaim resources (and bandwidth) ASAP; deschedule it, and
+@@ -413,31 +420,10 @@ musb_giveback(struct musb_qh *qh, struct urb *urb, int status)
+ break;
+ }
+ }
+- return qh;
+-}
+-
+-/*
+- * Advance this hardware endpoint's queue, completing the specified urb and
+- * advancing to either the next urb queued to that qh, or else invalidating
+- * that qh and advancing to the next qh scheduled after the current one.
+- *
+- * Context: caller owns controller lock, irqs are blocked
+- */
+-static void
+-musb_advance_schedule(struct musb *musb, struct urb *urb,
+- struct musb_hw_ep *hw_ep, int is_in)
+-{
+- struct musb_qh *qh = musb_ep_get_qh(hw_ep, is_in);
+-
+- if (urb->status == -EINPROGRESS)
+- qh = musb_giveback(qh, urb, 0);
+- else
+- qh = musb_giveback(qh, urb, urb->status);
+
+ if (qh != NULL && qh->is_ready) {
+ DBG(4, "... next ep%d %cX urb %p\n",
+- hw_ep->epnum, is_in ? 'R' : 'T',
+- next_urb(qh));
++ hw_ep->epnum, is_in ? 'R' : 'T', next_urb(qh));
+ musb_start_urb(musb, is_in, qh);
+ }
+ }
+@@ -2080,7 +2066,7 @@ static int musb_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
+
+ ret = 0;
+ qh->is_ready = 0;
+- __musb_giveback(musb, urb, 0);
++ musb_giveback(musb, urb, 0);
+ qh->is_ready = ready;
+
+ /* If nothing else (usually musb_giveback) is using it
+@@ -2164,7 +2150,7 @@ musb_h_disable(struct usb_hcd *hcd, struct usb_host_endpoint *hep)
+ * will activate any of these as it advances.
+ */
+ while (!list_empty(&hep->urb_list))
+- __musb_giveback(musb, next_urb(qh), -ESHUTDOWN);
++ musb_giveback(musb, next_urb(qh), -ESHUTDOWN);
+
+ hep->hcpriv = NULL;
+ list_del(&qh->ring);
+--
+1.6.0.4
+