Re: SanDisk 4.3+ iNAND eMMC devices TRIM bug workaround.

2011-04-12 Thread Andrei Warkentin
On Tue, Apr 12, 2011 at 11:57 AM, Chris Ball wrote: > Hi Andrei, > > On Mon, Apr 11 2011, Andrei Warkentin wrote: >> This fixes the out-of-spec erase/trim support. CMD38 argument >> is passed through an EXT_CSD byte instead of as the command >> argument. This has the effect that trims act as group

Re: SanDisk 4.3+ iNAND eMMC devices TRIM bug workaround.

2011-04-12 Thread Chris Ball
Hi Andrei, On Mon, Apr 11 2011, Andrei Warkentin wrote: > This fixes the out-of-spec erase/trim support. CMD38 argument > is passed through an EXT_CSD byte instead of as the command > argument. This has the effect that trims act as group erases, > erasing more data than necessary. Secure trims/era

SanDisk 4.3+ iNAND eMMC devices TRIM bug workaround.

2011-04-11 Thread Andrei Warkentin
This fixes the out-of-spec erase/trim support. CMD38 argument is passed through an EXT_CSD byte instead of as the command argument. This has the effect that trims act as group erases, erasing more data than necessary. Secure trims/erases were also affected. N.B. This depends on the mmc_switch patc