bna: Simplify DMA setting
authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Sat, 8 Jan 2022 16:16:16 +0000 (17:16 +0100)
committerJakub Kicinski <kuba@kernel.org>
Mon, 10 Jan 2022 00:52:18 +0000 (16:52 -0800)
commit9aaa82d2e8d5d39472aebef5d3fcf033421b645f
tree3721a2ed2bbf60d4481ef71ee91c57717aaf9e42
parentba8a5863497251ca32786ad3db5e24b7375ddde2
bna: Simplify DMA setting

As stated in [1], dma_set_mask() with a 64-bit mask will never fail if
dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.

So, if dma_set_mask_and_coherent() succeeds, 'using_dac' is known to be
'true'. This variable can be removed.

Simplify code and remove some dead code accordingly.

[1]: https://lkml.org/lkml/2021/6/7/398

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/1d5a7b3f4fa735f1233c3eb3fa07e71df95fad75.1641658516.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/ethernet/brocade/bna/bnad.c