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Date: Sun, 15 Jul 2007 17:52:30 +0800 From: Bryan Wu <bryan.wu@...log.com> To: Michael Buesch <mb@...sch.de> Cc: bryan.wu@...log.com, Jeff Garzik <jeff@...zik.org>, LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org, Andrew Morton <akpm@...ux-foundation.org> Subject: Re: [PATCH 1/3] Blackfin ethernet driver: on chip ethernet MAC controller driver On Sun, 2007-07-15 at 11:36 +0200, Michael Buesch wrote: > On Sunday 15 July 2007 11:16:56 Bryan Wu wrote: > > In current Blackfin DMA allocation/free, the return value from > > bfin_mac_alloc() is used as the dma_handle, here it is the > > tx_desc/rx_desc. > > The "dma_handle" is useless in the following code. > > I think a comment has to be added, at least, as it's very confusing. No problem, it should be. > > > This is some magic code for PHY ID. In the future, we will rewrite some > > code based on kernel phy abstraction layer to support more phy device. > > Ok, nice idea. > > > > Unwind the allocations above, if registering fails. > > > > > > > In fact, it is safe. Because if registering fails, bf537mac_probe will > > return none zero to bfin_mac_probe which will do free_netdev. > > Hm, weren't there some DMA allocations, too? Are they free'd properly? > Oh, the DMA allocation happens in bf537mac_open not in bf537mac_probe. so when registering fails, only free_netdev should be ok. I sent out a new driver patch for #2 try, please give us some comments Thanks - Bryan Wu - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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