diff options
| author | Tomoya MORINAGA <tomoya.rohm@gmail.com> | 2012-01-12 11:27:09 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-22 16:21:43 -0700 |
| commit | d5e285ee81a3daa1c46f30a61de5832cfb0c8f6c (patch) | |
| tree | 9969278504f96ab9cca7eb13cd5a6999e97e9c4b | |
| parent | c1fb81ad2e7692b01588c34e02368b284f60960c (diff) | |
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>
| -rw-r--r-- | drivers/usb/gadget/pch_udc.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index 654d79d5bf1b..2231122aab29 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -576,9 +576,7 @@ 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); @@ -2422,6 +2420,11 @@ 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); } /** |