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| author | Geoff Levand <geoff@infradead.org> | 2021-06-03 19:17:02 +0000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-06-10 21:44:58 +1000 |
| commit | 9733862e50fdba55e7f1554e4286fcc5302ff28e (patch) | |
| tree | f47f7de30d0a26d9b0513602093203ab0c97e893 /arch/powerpc/include/asm/ps3.h | |
| parent | 472b440fd26822c645befe459172dafdc2d225de (diff) | |
| download | linux-stable-9733862e50fdba55e7f1554e4286fcc5302ff28e.tar.gz linux-stable-9733862e50fdba55e7f1554e4286fcc5302ff28e.tar.bz2 linux-stable-9733862e50fdba55e7f1554e4286fcc5302ff28e.zip | |
powerpc/ps3: Add dma_mask to ps3_dma_region
Commit f959dcd6ddfd29235030e8026471ac1b022ad2b0 (dma-direct: Fix
potential NULL pointer dereference) added a null check on the
dma_mask pointer of the kernel's device structure.
Add a dma_mask variable to the ps3_dma_region structure and set
the device structure's dma_mask pointer to point to this new variable.
Fixes runtime errors like these:
# WARNING: Fixes tag on line 10 doesn't match correct format
# WARNING: Fixes tag on line 10 doesn't match correct format
ps3_system_bus_match:349: dev=8.0(sb_01), drv=8.0(ps3flash): match
WARNING: CPU: 0 PID: 1 at kernel/dma/mapping.c:151 .dma_map_page_attrs+0x34/0x1e0
ps3flash sb_01: ps3stor_setup:193: map DMA region failed
Signed-off-by: Geoff Levand <geoff@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/562d0c9ea0100a30c3b186bcc7adb34b0bbd2cd7.1622746428.git.geoff@infradead.org
Diffstat (limited to 'arch/powerpc/include/asm/ps3.h')
| -rw-r--r-- | arch/powerpc/include/asm/ps3.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/ps3.h b/arch/powerpc/include/asm/ps3.h index 7df145901def..8a0d8fb35328 100644 --- a/arch/powerpc/include/asm/ps3.h +++ b/arch/powerpc/include/asm/ps3.h @@ -71,6 +71,7 @@ struct ps3_dma_region_ops; * @bus_addr: The 'translated' bus address of the region. * @len: The length in bytes of the region. * @offset: The offset from the start of memory of the region. + * @dma_mask: Device dma_mask. * @ioid: The IOID of the device who owns this region * @chunk_list: Opaque variable used by the ioc page manager. * @region_ops: struct ps3_dma_region_ops - dma region operations @@ -85,6 +86,7 @@ struct ps3_dma_region { enum ps3_dma_region_type region_type; unsigned long len; unsigned long offset; + u64 dma_mask; /* driver variables (set by ps3_dma_region_create) */ unsigned long bus_addr; |