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27 March 2024, 02:37:15 UTC
Revision 2cfb8ce8c87802181ade74f5dadb3dded9bb4c7e authored by Jan Nikitenko on 13 March 2008, 19:32:39 UTC, committed by Linus Torvalds on 13 March 2008, 20:11:43 UTC 
spi_bitbang: short transfer status fix
 
SPI controller drivers return number of bytes actually transfered from
bitbang->txrx_bufs() method.  This updates handling of short transfers (where
the transfer size is less than requested):

 - Even zero byte short transfers should report errors;
 - Include short transfers in the total of transferred bytes;
 - Use EREMOTEIO (like USB) not EMSGSIZE to report short transfers

Short transfers don't normally mean invalid message sizes, but if the
underlying controller driver needs to use EMSGSIZE it can still do so.

[db: fix two more minor issues]
Signed-off-by: Jan Nikitenko <jan.nikitenko@gmail.com>
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>
1 parent 40369e1
History
Tip revision: 2cfb8ce8c87802181ade74f5dadb3dded9bb4c7e authored by Jan Nikitenko on 13 March 2008, 19:32:39 UTC
spi_bitbang: short transfer status fix
Tip revision: 2cfb8ce
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