Re: [PATCH 5/7] iommu/dma: add support for non-strict mode

From: kbuild test robot
Date: Fri Jun 01 2018 - 13:52:22 EST


Hi Zhen,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v4.17-rc7 next-20180601]
[cannot apply to iommu/next]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Zhen-Lei/add-non-strict-mode-support-for-arm-smmu-v3/20180602-000418
config: x86_64-randconfig-x008-201821 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All warnings (new ones prefixed by >>):

drivers//iommu/amd_iommu.c: In function 'amd_iommu_capable':
>> drivers//iommu/amd_iommu.c:3053:2: warning: enumeration value 'IOMMU_CAP_NON_STRICT' not handled in switch [-Wswitch]
switch (cap) {
^~~~~~

vim +/IOMMU_CAP_NON_STRICT +3053 drivers//iommu/amd_iommu.c

645c4c8d arch/x86/kernel/amd_iommu.c Joerg Roedel 2008-12-02 3050
ab636481 drivers/iommu/amd_iommu.c Joerg Roedel 2014-09-05 3051 static bool amd_iommu_capable(enum iommu_cap cap)
dbb9fd86 arch/x86/kernel/amd_iommu.c Sheng Yang 2009-03-18 3052 {
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27 @3053 switch (cap) {
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27 3054 case IOMMU_CAP_CACHE_COHERENCY:
ab636481 drivers/iommu/amd_iommu.c Joerg Roedel 2014-09-05 3055 return true;
bdddadcb drivers/iommu/amd_iommu.c Joerg Roedel 2012-07-02 3056 case IOMMU_CAP_INTR_REMAP:
ab636481 drivers/iommu/amd_iommu.c Joerg Roedel 2014-09-05 3057 return (irq_remapping_enabled == 1);
cfdeec22 drivers/iommu/amd_iommu.c Will Deacon 2014-10-27 3058 case IOMMU_CAP_NOEXEC:
cfdeec22 drivers/iommu/amd_iommu.c Will Deacon 2014-10-27 3059 return false;
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27 3060 }
80a506b8 arch/x86/kernel/amd_iommu.c Joerg Roedel 2010-07-27 3061
ab636481 drivers/iommu/amd_iommu.c Joerg Roedel 2014-09-05 3062 return false;
dbb9fd86 arch/x86/kernel/amd_iommu.c Sheng Yang 2009-03-18 3063 }
dbb9fd86 arch/x86/kernel/amd_iommu.c Sheng Yang 2009-03-18 3064

:::::: The code at line 3053 was first introduced by commit
:::::: 80a506b8fdcfa868bb53eb740f928217d0966fc1 x86/amd-iommu: Export cache-coherency capability

:::::: TO: Joerg Roedel <joerg.roedel@xxxxxxx>
:::::: CC: Joerg Roedel <joerg.roedel@xxxxxxx>

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