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Use a distinct return code for SPI commands with unsupported/invalid length

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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>
This commit is contained in:
Carl-Daniel Hailfinger
2009-07-14 10:26:56 +00:00
parent 78e4e12712
commit 142e30fcaa
6 changed files with 23 additions and 11 deletions
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3
wbsio_spi.c
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@ -154,7 +154,8 @@ int wbsio_spi_send_command(unsigned int writecnt, unsigned int readcnt,
if (!mode) {
fprintf(stderr, "%s: unsupported command type wr=%d rd=%d\n",
__func__, writecnt, readcnt);
return 1;
/* Command type refers to the number of bytes read/written. */
return SPI_INVALID_LENGTH;
}
OUTB(writearr[0], wbsio_spibase);