goofy mtd m25p80 patches in GIT ...
david-b at pacbell.net
Mon Oct 20 04:04:17 EDT 2008
On Monday 20 October 2008, David Woodhouse wrote:
> On Sun, 2008-10-19 at 15:35 -0700, David Brownell wrote:
> > [resend cc'ing linux-mtd, sorry]
> > I noticed a couple goofy patches in MTD GIT, while poking around
> > wondering what happened to some patches that I expected would
> > already have gotten upstream. Details below.
> Did you find the patches you expected to be going upstream?
Yes, sorry to have not made that explicit.
The were the mtd_dataflash.c patches.
(And I'm hoping we'll see an MTD "pull" request
for 2.6.28-rc0 ... )
> > First:
> > http://git.kernel.org/?p=linux/kernel/git/dwmw2/mtd-2.6.git;a=commitdiff;h=faff37508a104e9ec5285d5adecaab7e8dde472a
> > That patch is goofy because the command in question is *NOT* a block
> > erase command. It's a chip-erase command ... entirely unlike the
> > existing *real* block erase commands used in the driver.
> > Could we get a fix that provides the correct name for the operations?
> > Having real block commands, and this new thing, is at the very least
> > confusing...
> Makes sense. Chen Gong?
> > Second:
> > http://git.kernel.org/?p=linux/kernel/git/dwmw2/mtd-2.6.git;a=commitdiff;h=75d0ee2202b5740e94e913d8a52f91c6557c4c81
> > That's just plain wrong ... the original code is correct, but the
> > patch changed it to be incorrect. (DMA from the stack is never
> > legal.)
> Ah, so spi_write() uses DMA, but spi_write_then_read() does not?
> Not entirely intuitive :)
Maybe not ... but documented.
(More info in response to Chen Gong.)
> David Woodhouse Open Source Technology Centre
> David.Woodhouse at intel.com Intel Corporation
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