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| author |   Alistair Popple <alistair@popple.id.au> | 2018-04-11 16:38:55 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2018-04-24 09:46:57 +1000 |
| commit | a1409adac748f0db655e096521bbe6904aadeb98 (patch) | |
| tree | aa0b71b847bac835ef5bd59704f308d4b2e0998f /arch/powerpc/include/asm/powernv.h | |
| parent | powerpc/powernv/npu: Add lock to prevent race in concurrent context init/destroy (diff) | |
| download | linux-dev-a1409adac748f0db655e096521bbe6904aadeb98.tar.xz linux-dev-a1409adac748f0db655e096521bbe6904aadeb98.zip | |
powerpc/powernv/npu: Prevent overwriting of pnv_npu2_init_contex() callback parameters
There is a single npu context per set of callback parameters. Callers
should be prevented from overwriting existing callback values so
instead return an error if different parameters are passed.
Fixes: 1ab66d1fbada ("powerpc/powernv: Introduce address translation services for Nvlink2")
Cc: stable@vger.kernel.org # v4.12+
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Reviewed-by: Mark Hairgrove <mhairgrove@nvidia.com>
Tested-by: Mark Hairgrove <mhairgrove@nvidia.com>
Reviewed-by: Balbir Singh <bsingharora@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/powernv.h')
| -rw-r--r-- | arch/powerpc/include/asm/powernv.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/powernv.h b/arch/powerpc/include/asm/powernv.h index d1c2d2e658cf..2f3ff7a27881 100644 --- a/arch/powerpc/include/asm/powernv.h +++ b/arch/powerpc/include/asm/powernv.h @@ -15,7 +15,7 @@ extern void powernv_set_nmmu_ptcr(unsigned long ptcr); extern struct npu_context *pnv_npu2_init_context(struct pci_dev *gpdev, unsigned long flags, - struct npu_context *(*cb)(struct npu_context *, void *), + void (*cb)(struct npu_context *, void *), void *priv); extern void pnv_npu2_destroy_context(struct npu_context *context, struct pci_dev *gpdev); |