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Open Source and information security mailing list archives
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Date: Sun, 03 Sep 2006 12:32:45 +0200 From: Pierre Ossman <drzeus-list@...eus.cx> To: Alex Dubov <oakad@...oo.com>, linux-kernel@...r.kernel.org Subject: Re: Support for TI FlashMedia (pci id 104c:8033, 104c:803b) flash card readers Russell King wrote: > It's really the bus we care about at this stage, since the errors we > receive are along the lines of "the card reported that the last data > block had a CRC error", "we encountered an underrun condition during > the last data block", or "the card didn't request data before we > timed out", etc. > > Basically, the transfer of the next block confirms that the previous > block was successfully received by the card. > > Ehm... Now I'm a bit confused. At the point of a bus error, there difference between the data sent to the bus and the data successfully received by the card should amount to one block (as the last block got NACK:ed for whatever reason). If we expect host drivers to report the bytes sent to the bus, we need to subtract one block from the value reported to the block layer. Rgds Pierre -- VGER BF report: H 1.64317e-09 - 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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