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Signed-off-by: Adrian Barna=C5=9B --- .../media/atomisp/pci/hive_isp_css_common/host/vmem.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vme= m.c b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c index a3fe03216389..f11b0448ed83 100644 --- a/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c +++ b/drivers/staging/media/atomisp/pci/hive_isp_css_common/host/vmem.c @@ -15,18 +15,23 @@ =20 /* Copied from SDK: sim_semantics.c */ =20 +static inline unsigned long long subword_bitmask(unsigned int start, unsig= ned int end) +{ + return GENMASK_ULL(end - 1, 0) & ~(GENMASK_ULL(start, 0) >> 1); +} + /* subword bits move like this: MSB[____xxxx____]LSB -> MSB[000000= 00xxxx]LSB */ static inline unsigned long long subword(unsigned long long w, unsigned int start, unsigned int end) { - return (w & (((1ULL << (end - 1)) - 1) << 1 | 1)) >> start; + return (w & GENMASK_ULL(end - 1, 0)) >> start; } =20 /* clears subword bits like this: MSB[xxxx____xxxx]LSB -> MSB[xxxx0000xxxx= ]LSB */ static inline unsigned long long clear_subword(unsigned long long w, unsigned int start, unsigned int end) { - return w & (~(((1ULL << (end - 1)) - 1) << 1 | 1) | ((1ULL << start) - 1)= ); + return w & ~subword_bitmask(start, end); } =20 #define uedge_bits (8 * sizeof(unsigned long long)) --=20 2.51.0.355.g5224444f11-goog