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[Jemoic] [DeepinKernel SIG] drm/mwv207: add parentheses to evaluate the bitwise operator first #494

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Fix a comlipe error with clang-19:

drivers/gpu/drm/mwv207/mwv207_bo.c:165:6: error: logical not is only applied to the left hand side of this bitwise operator [-Werror,-Wlogical-not-parentheses]
165 | if (!jbo->flags & (1<<0))
| ^ ~
drivers/gpu/drm/mwv207/mwv207_bo.c:165:6: note: add parentheses after the '!' to evaluate the bitwise operator first
165 | if (!jbo->flags & (1<<0))
| ^
| ( )
drivers/gpu/drm/mwv207/mwv207_bo.c:165:6: note: add parentheses around left hand side expression to silence this warning
165 | if (!jbo->flags & (1<<0))
| ^
| ( )
1 error generated.

Fix a comlipe error with clang-19:

drivers/gpu/drm/mwv207/mwv207_bo.c:165:6: error: logical not is only applied to the left hand side of this bitwise operator [-Werror,-Wlogical-not-parentheses]
  165 |         if (!jbo->flags & (1<<0))
      |             ^           ~
drivers/gpu/drm/mwv207/mwv207_bo.c:165:6: note: add parentheses after the '!' to evaluate the bitwise operator first
  165 |         if (!jbo->flags & (1<<0))
      |             ^
      |              (                  )
drivers/gpu/drm/mwv207/mwv207_bo.c:165:6: note: add parentheses around left hand side expression to silence this warning
  165 |         if (!jbo->flags & (1<<0))
      |             ^
      |             (          )
1 error generated.

Signed-off-by: WangYuli <[email protected]>
@Avenger-285714 Avenger-285714 merged commit ec7f206 into deepin-community:linux-6.6.y Nov 25, 2024
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deepin pr auto review

关键摘要:

  • 代码中的位运算符优先级可能导致逻辑错误,建议使用括号明确优先级
  • 检查jbo->flags是否为0时,应该使用jbo->flags == 0而不是(!jbo->flags)

是否建议立即修改:

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