A couple of reliability improvements for Microchip Polarfire FPGA manager: * move SPI I/O buffers out of stack * rewrite status polling routine in a time measurable way Also improve mpf_ops_write() code readability by separating single data frame writing routine. ChangeLog: v1: [https://lore.kernel.org/linux-fpga/20221223123854.8023-1-i.bornyakov@xxxxxxxxxxx/] v2: * split into 3 distinct patches [https://lore.kernel.org/linux-fpga/20221226142326.8111-1-i.bornyakov@xxxxxxxxxxx/] v3: * fix polling stop condition in mpf_poll_status() as Ilpo suggested. [https://lore.kernel.org/linux-fpga/20221227100450.2257-1-i.bornyakov@xxxxxxxxxxx/] v4: * more verbose comment for mpf_poll_status() [https://lore.kernel.org/linux-fpga/20221229104604.2496-1-i.bornyakov@xxxxxxxxxxx/] v5: * revord "fpga: microchip-spi: move SPI I/O buffers out of stack" commit message "Use allocated buffers" -> "Use cacheline aligned buffers" * drop __aligned(ARCH_KMALLOC_MINALIGN) attribute of struct mpf_priv member "rx". tx and rx are used synchronously by dma, they could share a cacheline. Ivan Bornyakov (3): fpga: microchip-spi: move SPI I/O buffers out of stack fpga: microchip-spi: rewrite status polling in a time measurable way fpga: microchip-spi: separate data frame write routine drivers/fpga/microchip-spi.c | 145 +++++++++++++++++++---------------- 1 file changed, 79 insertions(+), 66 deletions(-) -- 2.38.2
