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The tasklet always is initialized with a non-NULL data argument. It is not possible for it to be called with a NULL data argument (unless something is very wrong in the tasklet code - in which case lots of stuff will break). Therefore, as plchan can never be NULL, remove this unnecessary BUG check. In pl08x_tasklet(), we've already dereferenced plchan->at, so it can't be NULL here. Remove this unnecessary BUG check. pl08x_fill_llis_for_desc() and pl08x_free_txd() are always called with a non-NULL txd argument - either as a consequence of the code paths or as a result of other checks already in place. We don't need to repeat the non-NULL check in these functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>