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/it87spi.c b/it87spi.c
index d5f7a51..41ce6db 100644
--- a/it87spi.c
+++ b/it87spi.c
@@ -170,7 +170,7 @@
if (readcnt > 3) {
printf("%s called with unsupported readcnt %i.\n",
__FUNCTION__, readcnt);
- return 1;
+ return SPI_INVALID_LENGTH;
}
switch (writecnt) {
case 1:
@@ -200,7 +200,7 @@
default:
printf("%s called with unsupported writecnt %i.\n",
__FUNCTION__, writecnt);
- return 1;
+ return SPI_INVALID_LENGTH;
}
/*
* Start IO, 33 or 16 MHz, readcnt input bytes, writecnt output bytes.