Re: [PATCH v3 1/7] AMSO1100 Low Level Driver.

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



> > > +	/* Tell HW to xmit */
> > > +	__raw_writeq(cpu_to_be64(mapaddr), elem->hw_desc + C2_TXP_ADDR);
> > > +	__raw_writew(cpu_to_be16(maplen), elem->hw_desc + C2_TXP_LEN);
> > > +	__raw_writew(cpu_to_be16(TXP_HTXD_READY), elem->hw_desc + C2_TXP_FLAGS);
> > 
> > or here
> > 
> 
> No need here.  This logic submits the packet for transmission.  We don't
> assume it is transmitted until we (after a completion interrupt usually)
> read back the HTXD entry and see the TXP_HTXD_DONE bit set (see
> c2_tx_interrupt()). 

... but will that interrupt happen at all if these 3 writes never hit
the hardware?


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux