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David Brownell 082c8cb4e5 spi device setup gets better error checking

This updates some error reporting paths in SPI device setup:

 - Move validation logic for SPI chipselects to spi_new_device(),
   which is where it should always have been.

 - In spi_new_device(), emit error messages if the device can't
   be created.  This is LOTS better than a silent failure; though
   eventually, the calling convention should probably change to
   use the <linux/err.h> conventions.

 - Includes one previously-missing check:  SPI masters must always
   have at least one chipselect, even for dedicated busses which
   always keep it selected!

It also adds a FIXME (IDR for dynamic ID allocation) so the issue doesn't live
purely in my mailbox.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2007-07-31 15:39:44 -07:00

at25.c

sysfs: add parameter "struct bin_attribute *" in .read/.write methods for sysfs binary attributes

2007-07-11 16:09:09 -07:00

atmel_spi.c

atmel_spi: don't always deselect chip between messages

2007-07-17 10:23:05 -07:00

atmel_spi.h

[PATCH] SPI: atmel_spi driver

2007-02-14 08:09:53 -08:00

au1550_spi.c

SPI controller drivers: check for unsupported modes