diff options
Diffstat (limited to 'recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.16/0053-usb-gadget-pch_udc-Reduce-redundant-interrupt.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.16/0053-usb-gadget-pch_udc-Reduce-redundant-interrupt.patch | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.16/0053-usb-gadget-pch_udc-Reduce-redundant-interrupt.patch b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.16/0053-usb-gadget-pch_udc-Reduce-redundant-interrupt.patch new file mode 100644 index 00000000..681f166d --- /dev/null +++ b/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.16/0053-usb-gadget-pch_udc-Reduce-redundant-interrupt.patch @@ -0,0 +1,55 @@ +From e7a01f05195272844be9a3e9abae0d18086cbc69 Mon Sep 17 00:00:00 2001 +From: Tomoya MORINAGA <tomoya.rohm@gmail.com> +Date: Thu, 12 Jan 2012 11:27:09 +0900 +Subject: [PATCH 53/68] usb: gadget: pch_udc: Reduce redundant interrupt + +commit 833310402c54ad9b676b465fc53ad276b13d36be upstream. + +ISSUE: +USB Suspend interrupts occur frequently. + +CAUSE: +When it is called pch_udc_reconnect() in USB Suspend, it repeats reset and +Suspend. + +SOLUTION: +pch_udc_reconnect() does not enable all interrupts. When an enumeration event +occurred the driver enables all interrupts. + +Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com> +Signed-off-by: Felipe Balbi <balbi@ti.com> +Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> +--- + drivers/usb/gadget/pch_udc.c | 9 ++++++--- + 1 file changed, 6 insertions(+), 3 deletions(-) + +diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c +index f232e65..870897ac 100644 +--- a/drivers/usb/gadget/pch_udc.c ++++ b/drivers/usb/gadget/pch_udc.c +@@ -568,9 +568,7 @@ static void pch_udc_reconnect(struct pch_udc_dev *dev) + /* enable device interrupts */ + /* pch_udc_enable_interrupts() */ + pch_udc_bit_clr(dev, UDC_DEVIRQMSK_ADDR, +- UDC_DEVINT_UR | UDC_DEVINT_US | +- UDC_DEVINT_ENUM | +- UDC_DEVINT_SI | UDC_DEVINT_SC); ++ UDC_DEVINT_UR | UDC_DEVINT_ENUM); + + /* Clear the disconnect */ + pch_udc_bit_set(dev, UDC_DEVCTL_ADDR, UDC_DEVCTL_RES); +@@ -2419,6 +2417,11 @@ static void pch_udc_svc_enum_interrupt(struct pch_udc_dev *dev) + pch_udc_set_dma(dev, DMA_DIR_TX); + pch_udc_set_dma(dev, DMA_DIR_RX); + pch_udc_ep_set_rrdy(&(dev->ep[UDC_EP0OUT_IDX])); ++ ++ /* enable device interrupts */ ++ pch_udc_enable_interrupts(dev, UDC_DEVINT_UR | UDC_DEVINT_US | ++ UDC_DEVINT_ES | UDC_DEVINT_ENUM | ++ UDC_DEVINT_SI | UDC_DEVINT_SC); + } + + /** +-- +1.7.10 + |