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c1b4071ec3
Add dma_alloc_attrs() and dma_free_attrs() helpers to fix a build
error when CONFIG_HAS_DMA is not enabled.
Note that when CONFIG_HAS_DMA is enabled, dma_alloc_attrs() and
dma_free_attrs() are included in both bindings_generated.rs and
bindings_helpers_generated.rs. The former takes precedence so behavior
remains unchanged in that case.
This fixes the following build error on UML:
error[E0425]: cannot find function `dma_alloc_attrs` in crate `bindings`
--> rust/kernel/dma.rs:171:23
|
171 | bindings::dma_alloc_attrs(
| ^^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_alloc_pages`
|
::: rust/bindings/bindings_generated.rs:44568:5
|
44568 | / pub fn dma_alloc_pages(
44569 | | dev: *mut device,
44570 | | size: usize,
44571 | | dma_handle: *mut dma_addr_t,
44572 | | dir: dma_data_direction,
44573 | | gfp: gfp_t,
44574 | | ) -> *mut page;
| |___________________- similarly named function `dma_alloc_pages` defined here
error[E0425]: cannot find function `dma_free_attrs` in crate `bindings`
--> rust/kernel/dma.rs:293:23
|
293 | bindings::dma_free_attrs(
| ^^^^^^^^^^^^^^ help: a function with a similar name exists: `dma_free_pages`
|
::: rust/bindings/bindings_generated.rs:44577:5
|
44577 | / pub fn dma_free_pages(
44578 | | dev: *mut device,
44579 | | size: usize,
44580 | | page: *mut page,
44581 | | dma_handle: dma_addr_t,
44582 | | dir: dma_data_direction,
44583 | | );
| |______- similarly named function `dma_free_pages` defined here
Fixes:
|
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.