diff options
Diffstat (limited to 'meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0014-musb_gadget-suppress-parasitic-TX-interrupts-with.patch')
| -rw-r--r-- | meta/recipes-kernel/linux/linux-omap-2.6.29/musb/0014-musb_gadget-suppress-parasitic-TX-interrupts-with.patch | 32 |
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 + |