Re: Patch [2/2] DaVinci CPPI TX DMA tasklet

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On Thu, Aug 21, 2008 at 07:28:42PM +0530, ext Swaminathan S wrote:
> 
>     Signed-off-by: Swaminathan S <swami.iyer@xxxxxx>
>     
>     This patch implements a tasklet to poll for TX Endpoint FIFO
>     empty status before completing a transfer.  This is required
>     in the context of DaVinci CPPI DMA Tx transfers.  CPPI
>     DMA engine generates completion interrupt before the data
>     actually moves out of TX FIFO and the driver needs to save the
>     Data toggle after ensuring that the FIFO is empty.

same comments from before.

> diff --git a/drivers/usb/musb/davinci.c b/drivers/usb/musb/davinci.c
> index d443a61..9dd24c3 100644
> --- a/drivers/usb/musb/davinci.c
> +++ b/drivers/usb/musb/davinci.c
> @@ -421,6 +421,12 @@ int __init musb_platform_init(struct musb *musb)
>  		musb_readb(tibase, DAVINCI_USB_CTRL_REG));
>  
>  	musb->isr = davinci_interrupt;
> +#ifdef CONFIG_USB_MUSB_HDRC_HCD

use if (is_host_capable()) instead.

> +		if (hw_ep->fifo_flush_check) {
> +			csr = musb_readw(hw_ep->regs, MUSB_TXCSR);
> +			if (((csr & MUSB_TXCSR_FIFONOTEMPTY) ||
> +				(csr & MUSB_TXCSR_TXPKTRDY)))
> +				sch_tsklt = 1;
> +			else {

put {} on both branches.

> +

this new line is unnecessary

this was just a primary overview. I wanna test more this patch since it
changes a bit musb_ep_program() which would affect all archs using musb.

I'll leave my n810 testing during this weekend and get back to you later
on.

-- 
balbi
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