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: 5f8d4a900830 ("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