spi: at25 driver is for EEPROM not FLASH
commit3f86f14c0fc9fdb0984e64209df2f47895a07151
authorDavid Brownell <david-b@pacbell.net>
Wed, 5 Dec 2007 07:45:10 +0000 (4 23:45 -0800)
committerLinus Torvalds <torvalds@woody.linux-foundation.org>
Wed, 5 Dec 2007 17:21:18 +0000 (5 09:21 -0800)
tree9dd400b97efa5260c31044efd5687a4d91c04bb7
parent068f4070868c801c7d7aa1ae1193c1c854193545
spi: at25 driver is for EEPROM not FLASH

Add comment to at25 driver that it's for EEPROM chips, not FLASH
chips ... the AT25 series has both types of chip, and sometimes
they're even pin-compatible.  The command sets are different, as
is the treatment of erasure.  (FLASH needs explicit erasure, but
with EEPROM it's implicit.)  Note that all vendors seem to have
this same confusion in their *25* series SPI memory parts.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
drivers/spi/at25.c