qlcnic: Eliminate duplicate barriers on weakly-ordered archs
authorSinan Kaya <okaya@codeaurora.org>
Sun, 25 Mar 2018 14:39:16 +0000 (10:39 -0400)
committerDavid S. Miller <davem@davemloft.net>
Mon, 26 Mar 2018 16:47:55 +0000 (12:47 -0400)
commitf9442ac498a86b1b0ec383a332be2635fbb1ed98
tree265762dc52f5a1e0bc31bba3e34df3c4dcea04e6
parent3c95c567322e1dfaa7e0348171181aaf63aa6049
qlcnic: Eliminate duplicate barriers on weakly-ordered archs

Code includes wmb() followed by writel(). writel() already has a
barrier on some architectures like arm64.

This ends up CPU observing two barriers back to back before executing
the register write.

Since code already has an explicit barrier call, changing writel() to
writel_relaxed().

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Acked-by: Manish Chopra <manish.chopra@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c