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| author | Gwendal Grignou <gwendal@chromium.org> | 2022-02-09 06:09:47 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2022-03-14 10:39:04 +0100 |
| commit | f97ec5d75e9261a5da78dc28a8955b7cc0c4468b (patch) | |
| tree | db761c2a913842c3ecb9ca7f96f892e628852ae9 /Documentation/virt/kvm/mmu.rst | |
| parent | HID: nintendo: check the return value of alloc_workqueue() (diff) | |
| download | linux-f97ec5d75e9261a5da78dc28a8955b7cc0c4468b.tar.xz linux-f97ec5d75e9261a5da78dc28a8955b7cc0c4468b.zip | |
HID: intel-ish-hid: Use dma_alloc_coherent for firmware update
Allocating memory with kmalloc and GPF_DMA32 is not allowed, the
allocator will ignore the attribute.
Instead, use dma_alloc_coherent() API as we allocate a small amount of
memory to transfer firmware fragment to the ISH.
On Arcada chromebook, after the patch the warning:
"Unexpected gfp: 0x4 (GFP_DMA32). Fixing up to gfp: 0xcc0 (GFP_KERNEL). Fix your code!"
is gone. The ISH firmware is loaded properly and we can interact with
the ISH:
> ectool --name cros_ish version
...
Build info: arcada_ish_v2.0.3661+3c1a1c1ae0 2022-02-08 05:37:47 @localhost
Tool version: v2.0.12300-900b03ec7f 2022-02-08 10:01:48 @localhost
Fixes: commit 91b228107da3 ("HID: intel-ish-hid: ISH firmware loader client driver")
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'Documentation/virt/kvm/mmu.rst')
0 files changed, 0 insertions, 0 deletions