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  • Vincenzo Frascino's avatar
    tee: optee: Fix compilation issue with nommu · 9e0caab8
    Vincenzo Frascino authored and Jens Wiklander's avatar Jens Wiklander committed
    The optee driver uses specific page table types to verify if a memory
    region is normal. These types are not defined in nommu systems. Trying
    to compile the driver in these systems results in a build error:
      linux/drivers/tee/optee/call.c: In function ‘is_normal_memory’:
      linux/drivers/tee/optee/call.c:533:26: error: ‘L_PTE_MT_MASK’ undeclared
         (first use in this function); did you mean ‘PREEMPT_MASK’?
         return (pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC;
      linux/drivers/tee/optee/call.c:533:26: note: each undeclared identifier is
         reported only once for each function it appears in
      linux/drivers/tee/optee/call.c:533:44: error: ‘L_PTE_MT_WRITEALLOC’ undeclared
         (first use in this function)
         return (pgprot_val(p) & L_PTE_MT_MASK) == L_PTE_MT_WRITEALLOC;
    Make the optee driver depend on MMU to fix the compilation issue.
    Signed-off-by: default avatarVincenzo Frascino <>
    [jw: update commit title]
    Signed-off-by: default avatarJens Wiklander <>