[PATCH 1/1] phy: intel: Fix compilation error on FIELD_PREP usage

From: Dilip Kota
Date: Tue May 26 2020 - 04:45:02 EST

FIELD_PREP expects mask variable datatype as unsigned long and constant.
Make the mask argument in combo_phy_w32_off_mask () as unsigned long const

Error reported as:
In file included from include/linux/build_bug.h:5,
from include/linux/bitfield.h:10,
from drivers/phy/intel/phy-intel-combo.c:8:
drivers/phy/intel/phy-intel-combo.c: In function 'combo_phy_w32_off_mask':
include/linux/bitfield.h:52:28: warning: comparison is always false due to limited range of data type [-Wtype-limits]

include/linux/compiler.h:350:38: error: call to '__compiletime_assert_37' declared with attribute error: FIELD_PREP: mask is not constant
94 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); | ^~~~~~~~~~~~~~~~
drivers/phy/intel/phy-intel-combo.c:137:13: note: in expansion of macro 'FIELD_PREP'
137 | reg_val |= FIELD_PREP(mask, val);
| ^~~~~~~~~~

Fixes: ac0a95a3ea78 ("phy: intel: Add driver support for ComboPhy")
Signed-off-by: Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx>
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
drivers/phy/intel/phy-intel-combo.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/intel/phy-intel-combo.c b/drivers/phy/intel/phy-intel-combo.c
index c2a35be4cdfb..05b7d724ceb0 100644
--- a/drivers/phy/intel/phy-intel-combo.c
+++ b/drivers/phy/intel/phy-intel-combo.c
@@ -128,7 +128,7 @@ static int intel_cbphy_pcie_refclk_cfg(struct intel_cbphy_iphy *iphy, bool set)

static inline void combo_phy_w32_off_mask(void __iomem *base, unsigned int reg,
- u32 mask, u32 val)
+ unsigned long const mask, u32 val)
u32 reg_val;