Prevent submission of empty read requests in linux_spi

The submission of zero-sized read requests in a write-only transaction
fails at least for omap2_mcspi drivers and is pointless in general.

This patch does not address the implementation of zero-sized writes (which
would need to skip the write command), as there are no flash transactions
not starting with a command.

Corresponding to flashrom svn r1513.

Signed-off-by: Michael Karcher <>
Acked-by: Stefan Tauner <>
1 file changed