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usb: gadget: pch_udc: Reduce redundant interrupt 

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>
This commit is contained in:
Tomoya MORINAGA 2012-01-12 11:27:09 +09:00 committed by Felipe Balbi
parent 1c575d2d2e
commit 833310402c
1 changed files with 6 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/usb/gadget/pch_udc.c
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@ -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);
}
/**