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Subject: media: ti-vpe: cal: avoid FIELD_GET assertion
Author:  Arnd Bergmann <[email protected]>
Date:    Fri Dec 4 00:07:30 2020 +0100

FIELD_GET() must only be used with a mask that is a compile-time
constant:

drivers/media/platform/ti-vpe/cal.h: In function 'cal_read_field':
include/linux/compiler_types.h:320:38: error: call to 
'__compiletime_assert_247' declared with attribute error: FIELD_GET: mask is 
not constant
include/linux/bitfield.h:46:3: note: in expansion of macro 'BUILD_BUG_ON_MSG'
   46 |   BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask),  \
      |   ^~~~~~~~~~~~~~~~
drivers/media/platform/ti-vpe/cal.h:220:9: note: in expansion of macro 
'FIELD_GET'
  220 |  return FIELD_GET(mask, cal_read(cal, offset));
      |         ^~~~~~~~~

The problem here is that the function is not always inlined. Mark it
__always_inline to avoid the problem.

Signed-off-by: Arnd Bergmann <[email protected]>
Reviewed-by: Laurent Pinchart <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>

 drivers/media/platform/ti-vpe/cal.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

---

diff --git a/drivers/media/platform/ti-vpe/cal.h 
b/drivers/media/platform/ti-vpe/cal.h
index 60f5f7480b17..d471b7f82519 100644
--- a/drivers/media/platform/ti-vpe/cal.h
+++ b/drivers/media/platform/ti-vpe/cal.h
@@ -259,7 +259,7 @@ static inline void cal_write(struct cal_dev *cal, u32 
offset, u32 val)
        iowrite32(val, cal->base + offset);
 }
 
-static inline u32 cal_read_field(struct cal_dev *cal, u32 offset, u32 mask)
+static __always_inline u32 cal_read_field(struct cal_dev *cal, u32 offset, u32 
mask)
 {
        return FIELD_GET(mask, cal_read(cal, offset));
 }

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