mtd: nand: rearrange ONFI revision checking, add ONFI 2.3

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In checking for the ONFI revision, the first conditional (for checking
"unsupported" ONFI) seems unnecessary.  All ONFI revisions should be
backwards-compatible; even if this is not the case on some newer ONFI
revision, it should simply fail the second version-checking if-else block
(i.e., the bit-fields for 1.0, 2.0, etc. would not be set to 1). Thus, we
move our "unsupported" condition after having checked each bit field.

Also, it's simple enough to add a condition for ONFI revision 2.3. Note
that this does *NOT* mean we handle all new features of ONFI versions
above 1.0.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Florian Fainelli <ffainelli@freebox.fr>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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Brian Norris 2010-12-12 00:23:33 -08:00 • committed by David Woodhouse

parent 0b524fb931

commit b7b1a29d94

1 changed files with 12 additions and 8 deletions

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drivers/mtd/nand/nand_base.c

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