The era of hand-rolled HIWORD_UPDATE macros is over, at least for those drivers that use constant masks.
Like many other Rockchip drivers, dwmac-rk has its own HIWORD_UPDATE macro. Its semantics allow us to redefine it as a wrapper to the shared hw_bitfield.h FIELD_PREP_WM16 macros though. Replace the implementation of this driver's very own HIWORD_UPDATE macro with an instance of FIELD_PREP_WM16 from hw_bitfield.h. This keeps the diff easily reviewable, while giving us more compile-time error checking. The related GRF_BIT macro is left alone for now; any attempt to rework the code to not use its own solution here would likely end up harder to review and less pretty for the time being. Signed-off-by: Nicolas Frattaroli <nicolas.frattar...@collabora.com> --- drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c index 79b92130a03faafbd26a0edf1a73199ecbb6e82b..0a1a83817ec19f3a42bc2d90f8b274575d60e278 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c @@ -8,6 +8,7 @@ */ #include <linux/stmmac.h> +#include <linux/hw_bitfield.h> #include <linux/bitops.h> #include <linux/clk.h> #include <linux/phy.h> @@ -150,7 +151,7 @@ static int rk_set_clk_mac_speed(struct rk_priv_data *bsp_priv, } #define HIWORD_UPDATE(val, mask, shift) \ - ((val) << (shift) | (mask) << ((shift) + 16)) + (FIELD_PREP_WM16((mask) << (shift), (val))) #define GRF_BIT(nr) (BIT(nr) | BIT(nr+16)) #define GRF_CLR_BIT(nr) (BIT(nr+16)) -- 2.50.0
