On Wed, May 11, 2011 at 07:54:57PM +0530, Kishore Kadiyala wrote: > When reading/writing a subpage (When HW ECC is not available/enabled) > for number of bytes not aligned to 4, the mis-aligned bytes are handled > first (by cpu copy method) before enabling the Prefetch engine to/from > 'p'(start of buffer 'buf'). Then it reads/writes rest of the bytes with > the help of Prefetch engine, if available, or again using cpu copy method. > Currently, reading/writing of rest of bytes, is not done correctly since > its trying to read/write again to/from begining of buffer 'buf', > overwriting the mis-aligned bytes. > > Read & write using prefetch engine got broken in commit '2c01946c'. > We never hit a scenario of not getting 'gpmc_prefetch_enable' call > success. So, problem did not get caught up. > > Signed-off-by: Kishore Kadiyala <kishore.kadiyala@xxxxxx> > Signed-off-by: Vimal Singh <vimal.newwork@xxxxxxxxx> > Reported-by: Bryan DE FARIA <bdefaria@xxxxxxxxxxxxxxxxxxx> > --- > drivers/mtd/nand/omap2.c | 12 +++++------- > 1 files changed, 5 insertions(+), 7 deletions(-) <formletter> This is not the correct way to submit patches for inclusion in the stable kernel tree. Please read Documentation/stable_kernel_rules.txt for how to do this properly. </formletter> -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
