Only probe for chips with compatible bus protocols

It doesn't make sense to probe for SPI chips on a LPC host, nor does it
make sense to probe for LPC chips on a Parallel host.

This change is backwards compatible, but adding host protocol info to
chipset init functions will speed up probing.

Once all chipset init functions are updated and the Winbond W29EE011 and
AMIC A49LF040A chip definitions are updated, the W29EE011 workaround can
be deleted as the W29/A49 conflict magically disappears.

Tested on real hardware and

Corresponding to flashrom svn r560.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>

1 files changed, 12 insertions, 3 deletions

diff --git a/it87spi.c b/it87spi.c
index d9f93e6..2528b91 100644
--- a/it87spi.c
+++ b/it87spi.c
@@ -109,14 +109,23 @@ int it87spi_common_init(void)
 
 int it87spi_init(void)
 {
-	get_io_perms();
+	int ret;
 
-	return it87spi_common_init();
+	get_io_perms();
+	ret = it87spi_common_init();
+	if (!ret)
+		buses_supported = CHIP_BUSTYPE_SPI;
+	return ret;
 }
 
 int it87xx_probe_spi_flash(const char *name)
 {
-	return it87spi_common_init();
+	int ret;
+
+	ret = it87spi_common_init();
+	if (!ret)
+		buses_supported |= CHIP_BUSTYPE_SPI;
+	return ret;
 }
 
 /*