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authorArtem Bityutskiy <dedekind1@gmail.com>2010-07-17 20:08:33 +0300
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2010-07-26 08:37:00 +0300
commitf1e870c3e9a1a80be7a1d886d61ccac0f8e97e10 (patch)
tree6860d01fa73cba0bb5de6fcf4a19b7a2ac007e55 /COPYING
parent05f56bf49ee0de8979c29c11f61a01e30e964444 (diff)
libmtd: support MEMERASE64
This patch is base on Kevin Cernekee's patch posted to the MTD mailing list. It adds MEMERASE64 support to the 'mtd_erase()' call. Now it first tries to use MEMERASE64, and if that is not supported, falls back to the old MEMERASE ioctl. This patch also introduces an 'offs64_ioctl' flag to the libmtd descriptor. However, we cannot initialize it in 'libmtd_open()', because we need an MTD device node, which we do not have in 'libmtd_open()'. Thus, we firs mark this flag as "uninitialized", and at the first invocation of 'mtd_erase()' we initialize it. This also means that we have to pass the limbtd descriptor to 'mtd_erase()', to save the flag value. This, in turn, requires tweaking 'mtd_erase()' users. This is not very nice, but good enough so far. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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