kernel/linux.git/drivers/fpga, branch v6.19.11

fpga: dfl: use subsys_initcall to allow built-in drivers to be added

2026-03-04T12:21:01+00:00

[ Upstream commit 267f53140c9d0bf270bbe0148082e9b8e5011273 ] The dfl code adds a bus. If it is built-in and there is a built-in driver as well, the dfl module_init may be called after the driver module_init, leading to a failure to register the driver as the bus has not been added yet. Use subsys_initcall, which guarantees it will be called before the drivers init code. Without the fix, we see failures like this: [ 0.479475] Driver 'intel-m10-bmc' was unable to register with bus_type 'dfl' because the bus was not initialized. Cc: stable@vger.kernel.org Fixes: 9ba3a0aa09fe ("fpga: dfl: create a dfl bus type to support DFL devices") Signed-off-by: Thadeu Lima de Souza Cascardo Link: https://lore.kernel.org/r/20251215-dfl_subsys-v1-1-21807bad6b10@igalia.com Reviewed-by: Xu Yilun Signed-off-by: Xu Yilun Signed-off-by: Sasha Levin

fpga: of-fpga-region: Fail if any bridge is missing

2026-03-04T12:20:39+00:00

[ Upstream commit c141c8221bc5089de915d9f26044df892c343c7e ] When parsing the region bridge list from the "fpga-bridges" device tree property, the of-fpga-region driver will silently ignore bridges which fail to be obtained, for example due to a missing bridge driver or invalid phandle. This can lead to hardware issues if a region bridge stays coupled when partial programming is performed. Fail if any of the bridges specified in "fpga-bridges" cannot be obtained. Signed-off-by: Romain Gantois Link: https://lore.kernel.org/r/20251127-of-fpga-region-fail-if-bridges-not-found-v1-1-ca674f8d07eb@bootlin.com Reviewed-by: Xu Yilun Signed-off-by: Xu Yilun Signed-off-by: Sasha Levin

fpga: altera-cvp: Use pci_find_vsec_capability() when probing FPGA device

2025-11-10T07:03:13+00:00

Currently altera_cvp_probe() open-codes pci_find_vsec_capability(). Refactor the former to use the latter. With that done: - use the VSEC ID as per datasheet [1] - update the error message accordingly Link: https://www.intel.com/content/www/us/en/docs/programmable/683763/23-1/vendor-specific-header-register.html [1] Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20251109201729.3220460-1-andriy.shevchenko@linux.intel.com Reviewed-by: Xu Yilun Signed-off-by: Xu Yilun

fpga: xilinx-spi: Add missing spi_device_id table

2025-11-10T07:02:07+00:00

The "xlnx,fpga-slave-serial" devicetree compatible string currently misses its SPI device ID entry. Without an spi_device_id table, the driver still works with device tree, but triggers the following runtime warning when registered via SPI core: SPI driver xlnx-slave-spi has no spi_device_id for xlnx,fpga-slave-serial Fix it by adding a corresponding spi_device_id table entry. Signed-off-by: Fabio Estevam Link: https://lore.kernel.org/r/20251026110237.986279-1-festevam@gmail.com [ Yilun: Remove extra whitespaces ] Reviewed-by: Xu Yilun Signed-off-by: Xu Yilun

fpga: zynq_fpga: Fix the wrong usage of dma_map_sgtable()

2025-08-19T10:54:45+00:00

dma_map_sgtable() returns only 0 or the error code. Read sgt->nents to get the number of mapped segments. Fixes: 37e00703228a ("zynq_fpga: use sgtable-based scatterlist wrappers") Reported-by: Pavel Pisa Closes: https://lore.kernel.org/linux-fpga/202508041548.22955.pisa@fel.cvut.cz/ Reviewed-by: Jason Gunthorpe Reviewed-by: Marek Szyprowski Signed-off-by: Xu Yilun Tested-by: Pavel Pisa Link: https://lore.kernel.org/r/20250806070605.1920909-2-yilun.xu@linux.intel.com Signed-off-by: Greg Kroah-Hartman

zynq_fpga: use sgtable-based scatterlist wrappers

2025-06-18T02:36:55+00:00

Use common wrappers operating directly on the struct sg_table objects to fix incorrect use of statterlists related calls. dma_unmap_sg() function has to be called with the number of elements originally passed to the dma_map_sg() function, not the one returned in sgtable's nents. CC: stable@vger.kernel.org Fixes: 425902f5c8e3 ("fpga zynq: Use the scatterlist interface") Signed-off-by: Marek Szyprowski Reviewed-by: Jason Gunthorpe Reviewed-by: Xu Yilun Link: https://lore.kernel.org/r/20250616120932.1090614-1-m.szyprowski@samsung.com Signed-off-by: Xu Yilun

Merge tag 'fpga-for-6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/fpga/linux-fpga into char-misc-next

2025-05-21T12:08:44+00:00

Xu writes: FPGA Manager changes for 6.16-rc1 - Peter hands over the maintain role of m10bmc-sec driver to Matthew. - Qasim's change fix potential NULL pointer for fpga test. All patches have been reviewed on the mailing list, and have been in the last linux-next releases (as part of our for-next branch). Signed-off-by: Xu Yilun * tag 'fpga-for-6.16-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/fpga/linux-fpga: fpga: fix potential null pointer deref in fpga_mgr_test_img_load_sgt() fpga: m10bmc-sec: change contact for secure update driver

fpga: fix potential null pointer deref in fpga_mgr_test_img_load_sgt()

2025-05-05T16:37:00+00:00

fpga_mgr_test_img_load_sgt() allocates memory for sgt using kunit_kzalloc() however it does not check if the allocation failed. It then passes sgt to sg_alloc_table(), which passes it to __sg_alloc_table(). This function calls memset() on sgt in an attempt to zero it out. If the allocation fails then sgt will be NULL and the memset will trigger a NULL pointer dereference. Fix this by checking the allocation with KUNIT_ASSERT_NOT_ERR_OR_NULL(). Reviewed-by: Marco Pagani Fixes: ccbc1c302115 ("fpga: add an initial KUnit suite for the FPGA Manager") Signed-off-by: Qasim Ijaz Acked-by: Xu Yilun Link: https://lore.kernel.org/r/20250422153737.5264-1-qasdev00@gmail.com Signed-off-by: Xu Yilun

fpga: tests: add module descriptions

2025-04-12T00:32:38+00:00

Modules without a description now cause a warning: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fpga/tests/fpga-bridge-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fpga/tests/fpga-mgr-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/fpga/tests/fpga-region-test.o Link: https://lkml.kernel.org/r/20250324173242.1501003-4-arnd@kernel.org Fixes: 6c6c1fc09de3 ("modpost: require a MODULE_DESCRIPTION()") Signed-off-by: Arnd Bergmann Cc: Hao Wu Cc: Jeff Johnson Cc: Marco Pagani Cc: Masahiro Yamada Cc: Moritz Fischer Cc: Russ Weight Cc: Stehen Rothwell Cc: Tom Rix Cc: Xu Yilun Signed-off-by: Andrew Morton

fpga: versal: remove incorrect of_match_ptr annotation

2025-03-01T09:37:31+00:00

Building with W=1 shows a warning about versal_fpga_of_match being unused when CONFIG_OF is disabled: drivers/fpga/versal-fpga.c:62:34: error: unused variable 'versal_fpga_of_match' [-Werror,-Wunused-const-variable] Acked-by: Xu Yilun Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20250225163510.4168911-1-arnd@kernel.org Signed-off-by: Xu Yilun