linux-stable.git/include/linux/fpga, branch v5.15.208

fpga: region: add owner module and take its refcount

2024-06-16T11:39:38+00:00

[ Upstream commit b7c0e1ecee403a43abc89eb3e75672b01ff2ece9 ]

The current implementation of the fpga region assumes that the low-level
module registers a driver for the parent device and uses its owner pointer
to take the module's refcount. This approach is problematic since it can
lead to a null pointer dereference while attempting to get the region
during programming if the parent device does not have a driver.

To address this problem, add a module owner pointer to the fpga_region
struct and use it to take the module's refcount. Modify the functions for
registering a region to take an additional owner module parameter and
rename them to avoid conflicts. Use the old function names for helper
macros that automatically set the module that registers the region as the
owner. This ensures compatibility with existing low-level control modules
and reduces the chances of registering a region without setting the owner.

Also, update the documentation to keep it consistent with the new interface
for registering an fpga region.

Fixes: 0fa20cdfcc1f ("fpga: fpga-region: device tree control for FPGA")
Suggested-by: Greg Kroah-Hartman 
Suggested-by: Xu Yilun 
Reviewed-by: Russ Weight 
Signed-off-by: Marco Pagani 
Acked-by: Xu Yilun 
Link: https://lore.kernel.org/r/20240419083601.77403-1-marpagan@redhat.com
Signed-off-by: Xu Yilun 
Signed-off-by: Sasha Levin

fpga: region: Use standard dev_release for class driver

2024-06-16T11:39:38+00:00

[ Upstream commit 8886a579744fbfa53e69aa453ed10ae3b1f9abac ]

The FPGA region class driver data structure is being treated as a
managed resource instead of using the standard dev_release call-back
function to release the class data structure. This change removes the
managed resource code and combines the create() and register()
functions into a single register() or register_full() function.

The register_full() function accepts an info data structure to provide
flexibility in passing optional parameters. The register() function
supports the current parameter list for users that don't require the
use of optional parameters.

Signed-off-by: Russ Weight 
Reviewed-by: Xu Yilun 
Acked-by: Xu Yilun 
Signed-off-by: Moritz Fischer 
Stable-dep-of: b7c0e1ecee40 ("fpga: region: add owner module and take its refcount")
Signed-off-by: Sasha Levin

fpga: fix spelling mistakes

2021-07-22T02:54:21+00:00

Run the fpga subsystem through aspell.

Signed-off-by: Tom Rix 
Reviewed-by: Fernando Pacheco 
Signed-off-by: Moritz Fischer

fpga: altera-pr-ip: Remove function alt_pr_unregister

2021-06-15T07:27:35+00:00

Remove the alt_pr_unregister() function; it is no longer used.

Signed-off-by: Russ Weight 
Reviewed-by: Xu Yilun 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20210614170909.232415-2-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

fpga-mgr: change FPGA indirect article to an

2021-06-09T12:51:25+00:00

Change use of 'a fpga' to 'an fpga'

Signed-off-by: Tom Rix 
Link: https://lore.kernel.org/r/20210608212350.3029742-9-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman

fpga: bridge: change FPGA indirect article to an

2021-06-09T12:51:25+00:00

Change use of 'a fpga' to 'an fpga'

Signed-off-by: Tom Rix 
Link: https://lore.kernel.org/r/20210608212350.3029742-8-trix@redhat.com
Signed-off-by: Greg Kroah-Hartman

fpga: fpga-mgr: Add devm_fpga_mgr_register() API

2020-12-01T17:49:32+00:00

Add a devm_fpga_mgr_register() API that can be used to register a FPGA
Manager that was created using devm_fpga_mgr_create().

Introduce a struct fpga_mgr_devres that makes the devres
allocation a little bit more readable and gets reused for
devm_fpga_mgr_create() devm_fpga_mgr_register().

Reviewed-by: Tom Rix 
Signed-off-by: Moritz Fischer 
Link: https://lore.kernel.org/r/20201115195127.284487-2-mdf@kernel.org
Signed-off-by: Greg Kroah-Hartman

include: fpga: adi-axi-common.h: add version helper macros

2020-04-19T15:56:21+00:00

The format for all ADI AXI IP cores is the same.
i.e. 'major.minor.patch'.

This patch adds the helper macros to be re-used in ADI AXI drivers.

Acked-by: Moritz Fischer 
Signed-off-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

include: fpga: adi-axi-common.h: fixup whitespace tab -> space

2020-04-19T15:56:21+00:00

The initial version use a tab between '#define' & 'ADI_AXI_REG_VERSION'.
This changes it to space. The change is purely cosmetic.

Acked-by: Moritz Fischer 
Signed-off-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

fpga: altera-pr-ip: Make alt_pr_unregister function void

2019-07-24T21:11:52+00:00

Make alt_pr_unregister function void, since it always returns 0,
and nothing would act on the value anyways.

Signed-off-by: Moritz Fischer