1 files changed, 32 insertions, 0 deletions

diff --git a/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0014-musb_gadget-suppress-parasitic-TX-interrupts-with.patch b/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0014-musb_gadget-suppress-parasitic-TX-interrupts-with.patch
new file mode 100644
index 0000000000..08e08a8538
--- /dev/null
+++ b/meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0014-musb_gadget-suppress-parasitic-TX-interrupts-with.patch
@@ -0,0 +1,32 @@
+From 7766f2ea909b73f56d21746485069e02839b75f1 Mon Sep 17 00:00:00 2001
+From: Sergei Shtylyov <sshtylyov-hkdhdckH98+B+jHODAdFcQ@public.gmane.org>
+Date: Fri, 27 Mar 2009 12:53:32 -0700
+Subject: [PATCH] musb_gadget: suppress "parasitic" TX interrupts with CPPI
+
+Suppress "parasitic" endpoint interrupts in the DMA mode
+when using CPPI DMA driver; they're caused by the MUSB gadget
+driver using the DMA request mode 0 instead of the mode 1.
+
+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_gadget.c |    3 ++-
+ 1 files changed, 2 insertions(+), 1 deletions(-)
+
+diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
+index f79440c..bc197b2 100644
+--- a/drivers/usb/musb/musb_gadget.c
++++ b/drivers/usb/musb/musb_gadget.c
+@@ -349,7 +349,8 @@ static void txstate(struct musb *musb, struct musb_request *req)
+ #elif defined(CONFIG_USB_TI_CPPI_DMA)
+                /* program endpoint CSR first, then setup DMA */
+                csr &= ~(MUSB_TXCSR_P_UNDERRUN | MUSB_TXCSR_TXPKTRDY);
+-               csr |= MUSB_TXCSR_MODE | MUSB_TXCSR_DMAENAB;
++               csr |= MUSB_TXCSR_DMAENAB | MUSB_TXCSR_DMAMODE |
++                      MUSB_TXCSR_MODE;
+                musb_writew(epio, MUSB_TXCSR,
+                        (MUSB_TXCSR_P_WZC_BITS & ~MUSB_TXCSR_P_UNDERRUN)
+                                | csr);
+-- 
+1.6.0.4
+