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mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-12-12 21:44:06 +08:00
linux/drivers/spi
David Brownell bdff549ebe spi: spi_write_then_read() bugfixes
The "simplify spi_write_then_read()" patch included two regressions from
the 2.6.27 behaviors:

 - The data it wrote out during the (full duplex) read side
   of the transfer was not zeroed.

 - It fails completely on half duplex hardware, such as
   Microwire and most "3-wire" SPI variants.

So, revert that patch.  A revised version should be submitted at some
point, which can get the speedup on standard hardware (full duplex)
without breaking on less-capable half-duplex stuff.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: <stable@kernel.org>		[2.6.28.x, 2.6.29.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-13 15:04:30 -07:00
..
atmel_spi.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
atmel_spi.h [PATCH] SPI: atmel_spi driver 2007-02-14 08:09:53 -08:00
au1550_spi.c spi: au1550_spi full duplex dma fix 2008-12-01 19:55:24 -08:00
Kconfig spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom 2009-01-26 21:19:54 +01:00
Makefile spi: Move at25 (for SPI eeproms) to /drivers/misc/eeprom 2009-01-26 21:19:54 +01:00
mpc52xx_psc_spi.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
omap2_mcspi.c Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
omap_uwire.c Merge branch 'origin' into devel 2009-03-28 20:29:51 +00:00
orion_spi.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
pxa2xx_spi.c pxa2xx_spi: set spi_master.dma_alignment = 8 2009-04-07 08:31:07 -07:00
spi_bfin5xx.c spi_bfin5xx: remove unused IS_DMA_ALIGNED macro 2009-04-07 08:31:07 -07:00
spi_bitbang.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:37 -08:00
spi_butterfly.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-01-06 10:44:37 -08:00
spi_gpio.c spi-gpio: allow operation without CS signal 2009-04-02 19:04:51 -07:00
spi_imx.c spi_imx: set spi_master.dma_alignment = 4 2009-04-07 08:31:07 -07:00
spi_lm70llp.c hwmon: (lm70) Code streamlining and cleanup 2009-01-07 16:37:34 +01:00
spi_mpc83xx.c spi_mpc83xx: add OF platform driver bindings 2009-04-01 08:59:22 -07:00
spi_s3c24xx_gpio.c spi: fix spi_s3c24xx_gpio num_chipselect 2008-12-01 19:55:24 -08:00
spi_s3c24xx.c spi: use generic gpio calls in spi_s3c24xx_gpio 2009-01-06 15:59:19 -08:00
spi_sh_sci.c spi: fix platform driver hotplug/coldplug 2008-04-11 08:06:43 -07:00
spi_txx9.c spi: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:21 -07:00
spi.c spi: spi_write_then_read() bugfixes 2009-04-13 15:04:30 -07:00
spidev.c spi: avoid spidev crash when device is removed 2008-12-01 19:55:24 -08:00
tle62x0.c tle62x0 driver stops ignoring read errors 2007-11-14 18:45:42 -08:00
xilinx_spi.c powerpc/virtex/spi: Xilinx SPI driver not releasing memory 2009-03-11 09:36:20 -06:00