Hello,

the yaffs_read() function uses yaffs_file_rd() to obtain the data from the 
flash.  Lets have a look at yaffs_file_rd() and suppose n_bytes > 0.  Thus we 
have n > 0.  I suppose n_copy is never negative.  In the loop n is only 
modified via n -= n_copy and thus n_copy must be greater than zero at some time 
otherwise we loop for ever. The n_done is only modified via n_done += n_copy 
and since n_copy is greater than zero at some time the n_done will be greater 
than zero too.  Thus the return value of yaffs_file_rd() is greater than zero 
iff n_bytes is greater than zero.

This means that the yaffs_read() never returns an error status in case we have 
an uncorrectable ECC error on the flash (YAFFS_ECC_RESULT_UNFIXED)?

Kind regards,
	Sebastian

PS: The yaffs_rd_data_obj() returns an error status, but it is discarded in 
yaffs_file_rd().

-- 
Sebastian Huber, embedded brains GmbH

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