BMC/Intel-BMC/linux.git/drivers/char/xillybus, branch dev-4.3

char: xillybus: Allow 64-bit DMA on PCIe interface

2015-08-05T19:27:09+00:00

Until now, only 32-bit DMA addressing was allowed, following a report on some old Intel machine that dropped 64-bit PCIe packets, even though pci_set_dma_mask() was successful with DMA_BIT_MASK(64). But then came TI's Keystone II chip (ARM Cortex A15 + DSPs), which refuses 32-bit DMA addressing (for good reasons). So 64-bit DMA is allowed as a fallback option. Signed-off-by: Eli Billauer Signed-off-by: Greg Kroah-Hartman

xillybus: XILLYBUS_OF should depend on HAS_DMA

2015-05-24T19:24:35+00:00

If NO_DMA=y: drivers/built-in.o: In function `xilly_of_unmap': xillybus_of.c:(.text+0xa860e): undefined reference to `dma_unmap_single' drivers/built-in.o: In function `xilly_map_single_of': xillybus_of.c:(.text+0xa8668): undefined reference to `dma_map_single' xillybus_of.c:(.text+0xa8676): undefined reference to `dma_mapping_error' xillybus_of.c:(.text+0xa86ca): undefined reference to `dma_unmap_single' drivers/built-in.o: In function `xilly_dma_sync_single_for_device_of': xillybus_of.c:(.text+0xa8700): undefined reference to `dma_sync_single_for_cpu' drivers/built-in.o: In function `xilly_dma_sync_single_for_cpu_of': xillybus_of.c:(.text+0xa8726): undefined reference to `dma_sync_single_for_cpu' Signed-off-by: Geert Uytterhoeven Acked-by: Eli Billauer -- v2: - Add Acked-by, send to char and misc drivers maintainers. Signed-off-by: Greg Kroah-Hartman

char: xillybus: Don't return -EFAULT on user-triggered flush

2015-04-03T14:15:30+00:00

The API allows the application to flush a host-to-FPGA stream by calling write() with the data count set to zero. Before this patch, copy_from_user() was called with a non-zero byte count, which possibly made it attempt to read from unmapped user memory. Such attempts caused the driver to return -EFAULT instead of 0, even though the desired operation went through fine. This patch ensures the driver returns 0 on a successful flush. Signed-off-by: Eli Billauer Signed-off-by: Greg Kroah-Hartman

char: constify of_device_id array

2015-03-16T20:10:28+00:00

of_device_id is always used as const. (See driver.of_match_table and open firmware functions) Signed-off-by: Fabian Frederick Signed-off-by: Greg Kroah-Hartman

char: xillybus: drop owner assignment from platform_drivers

2014-10-20T14:20:21+00:00

A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang

xillybus: Move out of staging

2014-09-24T06:44:16+00:00

This driver has been functional and stable throughout the year it has spent in the staging area. It has been patched for minor bugs, coding style issues and improvements during this period. This is the second submission of this move-out, after making several style improvements, as suggested by Dan Carpenter. Signed-off-by: Eli Billauer Signed-off-by: Greg Kroah-Hartman