This patch fixes checkpatch.pl errors for assignment in if condition.
It also removes unused readq / readl function calls.

As Andrew had disabled the compilation of drivers for 32 bit,
I have modified format specifiers in few VPRINTKs to avoid warnings
during 64 bit compilation.
Signed-off-by: NAkhil Bhansali <abhansali@stec-inc.com>
Reviewed-by: NRamprasad Chinthekindi <rchinthekindi@stec-inc.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>