Use a distinct return code for SPI commands with unsupported/invalid length
Some drivers support only a few combinations of read/write length and
return error otherwise. Having a distinct return code for this error
means we can handle it in upper layers.
Corresponding to flashrom svn r653.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
diff --git a/spi.h b/spi.h
index aa80c43..3050ccf 100644
--- a/spi.h
+++ b/spi.h
@@ -108,5 +108,6 @@
/* Error codes */
#define SPI_INVALID_OPCODE -2
#define SPI_INVALID_ADDRESS -3
+#define SPI_INVALID_LENGTH -4
#endif /* !__SPI_H__ */