FIELD_PREP expects constant arguments. Istead of doing FIELD_PREP
operation on the arguments of combo_phy_w32_off_mask(), pass the
final FIELD_PREP value as an argument.

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);
|             ^~~~~~~~~~

../include/linux/compiler.h:392:38: error: call to__compiletime_assert_137
 declared with attribute error:
BUILD_BUG_ON failed: (((mask) + (1ULL << (__builtin_ffsll(mask) - 1))) & 
(((mask) + (1ULL << (__builtin_ffsll(mask) - 1))) - 1)) != 0
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)

../include/linux/bitfield.h:94:3: note: in expansion of macro __BF_FIELD_CHECK
   __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
   ^~~~~~~~~~~~~~~~
../drivers/phy/intel/phy-intel-combo.c:137:13: note: in expansion of macro 
FIELD_PREP
  reg_val |= FIELD_PREP(mask, val);
             ^~~~~~~~~~

Fixes: ac0a95a3ea78 ("phy: intel: Add driver support for ComboPhy")
Signed-off-by: Dilip Kota <eswara.k...@linux.intel.com>
Reported-by: kbuild test robot <l...@intel.com>
Reported-by: Randy Dunlap <rdun...@infradead.org>
---
 drivers/phy/intel/phy-intel-combo.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/intel/phy-intel-combo.c 
b/drivers/phy/intel/phy-intel-combo.c
index c2a35be4cdfb..254ea7cba7ca 100644
--- a/drivers/phy/intel/phy-intel-combo.c
+++ b/drivers/phy/intel/phy-intel-combo.c
@@ -134,7 +134,7 @@ static inline void combo_phy_w32_off_mask(void __iomem 
*base, unsigned int reg,
 
        reg_val = readl(base + reg);
        reg_val &= ~mask;
-       reg_val |= FIELD_PREP(mask, val);
+       reg_val |= val;
        writel(reg_val, base + reg);
 }
 
@@ -169,7 +169,7 @@ static int intel_cbphy_pcie_en_pad_refclk(struct 
intel_cbphy_iphy *iphy)
                return 0;
 
        combo_phy_w32_off_mask(cbphy->app_base, PCIE_PHY_GEN_CTRL,
-                              PCIE_PHY_CLK_PAD, 0);
+                              PCIE_PHY_CLK_PAD, FIELD_PREP(PCIE_PHY_CLK_PAD, 
0));
 
        /* Delay for stable clock PLL */
        usleep_range(50, 100);
@@ -192,7 +192,7 @@ static int intel_cbphy_pcie_dis_pad_refclk(struct 
intel_cbphy_iphy *iphy)
                return 0;
 
        combo_phy_w32_off_mask(cbphy->app_base, PCIE_PHY_GEN_CTRL,
-                              PCIE_PHY_CLK_PAD, 1);
+                              PCIE_PHY_CLK_PAD, FIELD_PREP(PCIE_PHY_CLK_PAD, 
1));
 
        return 0;
 }
@@ -385,7 +385,7 @@ static int intel_cbphy_calibrate(struct phy *phy)
 
        /* trigger auto RX adaptation */
        combo_phy_w32_off_mask(cr_base, CR_ADDR(PCS_XF_ATE_OVRD_IN_2, id),
-                              ADAPT_REQ_MSK, 3);
+                              ADAPT_REQ_MSK, FIELD_PREP(ADAPT_REQ_MSK, 3));
        /* Wait RX adaptation to finish */
        ret = readl_poll_timeout(cr_base + CR_ADDR(PCS_XF_RX_ADAPT_ACK, id),
                                 val, val & RX_ADAPT_ACK_BIT, 10, 5000);
@@ -396,7 +396,7 @@ static int intel_cbphy_calibrate(struct phy *phy)
 
        /* Stop RX adaptation */
        combo_phy_w32_off_mask(cr_base, CR_ADDR(PCS_XF_ATE_OVRD_IN_2, id),
-                              ADAPT_REQ_MSK, 0);
+                              ADAPT_REQ_MSK, FIELD_PREP(ADAPT_REQ_MSK, 0));
 
        return ret;
 }
-- 
2.11.0

Reply via email to