Ivan Bornyakov 1da53d23a4 fpga: microchip-spi: move SPI I/O buffers out of stack ... As spi-summary doc says: > I/O buffers use the usual Linux rules, and must be DMA-safe. > You'd normally allocate them from the heap or free page pool. > Don't use the stack, or anything that's declared "static". Replace spi_write() with spi_write_then_read(), which is dma-safe for on-stack buffers. Use cacheline aligned buffers for transfers used in spi_sync_transfer(). Although everything works OK with stack-located I/O buffers, better follow the doc to be safe. Fixes: 5f8d4a9008 ("fpga: microchip-spi: add Microchip MPF FPGA manager") Signed-off-by: Ivan Bornyakov <i.bornyakov@metrotek.ru> Acked-by: Conor Dooley <conor.dooley@microchip.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20221230092922.18822-2-i.bornyakov@metrotek.ru Signed-off-by: Xu Yilun <yilun.xu@intel.com>		2023-01-28 23:20:24 +08:00
..
altera-cvp.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
altera-fpga2sdram.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
altera-freeze-bridge.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
altera-hps2fpga.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
altera-pr-ip-core-plat.c	fpga: fpga-mgr: altera-pr-ip: Simplify registration	2020-12-01 18:49:32 +01:00
altera-pr-ip-core.c	fpga: altera-pr-ip: fix unsigned comparison with less than zero	2022-06-10 15:48:23 +08:00
altera-ps-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
dfl-afu-dma-region.c	fpga: dfl: afu: convert get_user_pages() --> pin_user_pages()	2020-06-18 18:12:06 -07:00
dfl-afu-error.c	fpga: dfl: afu: harden port enable logic	2021-03-24 11:15:04 -07:00
dfl-afu-main.c	fpga: dfl: afu: harden port enable logic	2021-03-24 11:15:04 -07:00
dfl-afu-region.c	fpga: dfl: afu: add afu sub feature support	2018-07-15 13:55:47 +02:00
dfl-afu.h	fpga: dfl: afu: harden port enable logic	2021-03-24 11:15:04 -07:00
dfl-fme-br.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
dfl-fme-error.c	fpga: dfl: fme: add interrupt support for global error reporting	2020-07-06 21:35:42 -07:00
dfl-fme-main.c	fpga: dfl: fme: add interrupt support for global error reporting	2020-07-06 21:35:42 -07:00
dfl-fme-mgr.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
dfl-fme-perf.c	fpga: dfl: fme: Fix cpu hotplug issue in performance reporting	2021-07-27 11:05:16 -07:00
dfl-fme-pr.c	fpga: fix spelling mistakes	2021-07-21 19:54:21 -07:00
dfl-fme-pr.h	fpga: dfl: fme: add partial reconfiguration sub feature support	2018-07-15 13:55:46 +02:00
dfl-fme-region.c	fpga: region: Use standard dev_release for class driver	2021-11-28 14:02:41 -08:00
dfl-fme.h	fpga: dfl: fme: add performance reporting support	2020-04-28 15:49:28 +02:00
dfl-n3000-nios.c	fpga: fix spelling mistakes	2021-07-21 19:54:21 -07:00
dfl-pci.c	fpga: dfl-pci: Add IDs for Intel N6000, N6001 and C6100 cards	2022-08-15 11:38:31 +08:00
dfl.c	fpga: prevent integer overflow in dfl_feature_ioctl_set_irq()	2022-09-04 01:48:00 +08:00
dfl.h	fpga: dfl: Allow Port to be linked to FME's DFL	2022-05-10 16:05:38 +08:00
fpga-bridge.c	fpga: Directly use ida_alloc()/free()	2022-06-08 17:04:39 +08:00
fpga-mgr.c	fpga: fpga-mgr: Fix spelling mistake "bitsream" -> "bitstream"	2022-06-29 15:18:18 +08:00
fpga-region.c	fpga: Directly use ida_alloc()/free()	2022-06-08 17:04:39 +08:00
ice40-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
intel-m10-bmc-sec-update.c	Char/Misc and other driver changes for 6.1-rc1	2022-10-08 08:56:37 -07:00
Kconfig	Char/Misc driver changes for 6.2-rc1	2022-12-16 03:49:24 -08:00
lattice-sysconfig-spi.c	fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager	2022-10-25 14:44:03 +08:00
lattice-sysconfig.c	fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager	2022-10-25 14:44:03 +08:00
lattice-sysconfig.h	fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager	2022-10-25 14:44:03 +08:00
machxo2-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
Makefile	fpga: lattice-sysconfig-spi: add Lattice sysCONFIG FPGA manager	2022-10-25 14:44:03 +08:00
microchip-spi.c	fpga: microchip-spi: move SPI I/O buffers out of stack	2023-01-28 23:20:24 +08:00
of-fpga-region.c	fpga: fpga-region: fix kernel-doc formatting issues	2022-05-10 16:05:00 +08:00
socfpga-a10.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
socfpga.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
stratix10-soc.c	fpga: stratix10-soc: Do not use ret uninitialized in s10_probe()	2021-12-02 20:07:17 -08:00
ts73xx-fpga.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
versal-fpga.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
xilinx-pr-decoupler.c	fpga: bridge: Use standard dev_release for class driver	2021-11-28 14:02:13 -08:00
xilinx-spi.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00
zynq-fpga.c	fpga: zynq: Switch to use dev_err_probe() helper	2022-10-25 14:25:02 +08:00
zynqmp-fpga.c	fpga: mgr: Use standard dev_release for class driver	2021-11-28 13:59:13 -08:00