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authorKyösti Mälkki <kyosti.malkki@gmail.com>2019-02-26 17:17:24 +0200
committerKyösti Mälkki <kyosti.malkki@gmail.com>2019-03-04 13:06:40 +0000
commit44206e38bf6e3ddd6a628ceab0c2c982ca6660b3 (patch)
treec451baf7f6fdcde8150d1621560af776f01e46dc /src/southbridge/intel
parent62b4b4496190c69b3e0f8562a3c560913af119bf (diff)
downloadcoreboot-44206e38bf6e3ddd6a628ceab0c2c982ca6660b3.tar.xz
sb/intel/common: Fix SMBus block commands
Fix regression after commit c38d543 sb/intel/common: SMBus complete_command() When evaluating HSTSTS register, BYTE_DONE bit must be excluded from transaction completion and error criteria. Change-Id: I49cc43d1fa58250988cc41b2ca747b9f1d7586d6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/31622 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/southbridge/intel')
-rw-r--r--src/southbridge/intel/common/smbus.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/southbridge/intel/common/smbus.c b/src/southbridge/intel/common/smbus.c
index a842a61222..9ae01ad178 100644
--- a/src/southbridge/intel/common/smbus.c
+++ b/src/southbridge/intel/common/smbus.c
@@ -74,7 +74,10 @@ static int host_completed(u8 status)
{
if (status & SMBHSTSTS_HOST_BUSY)
return 0;
- status &= ~(SMBHSTSTS_SMBALERT_STS | SMBHSTSTS_INUSE_STS);
+
+ /* These status bits do not imply completion of transaction. */
+ status &= ~(SMBHSTSTS_BYTE_DONE | SMBHSTSTS_INUSE_STS |
+ SMBHSTSTS_SMBALERT_STS);
return status != 0;
}
@@ -89,8 +92,9 @@ static int recover_master(int smbus_base, int ret)
static int cb_err_from_stat(u8 status)
{
- /* Ignore the "In Use" status... */
- status &= ~(SMBHSTSTS_SMBALERT_STS | SMBHSTSTS_INUSE_STS);
+ /* These status bits do not imply errors. */
+ status &= ~(SMBHSTSTS_BYTE_DONE | SMBHSTSTS_INUSE_STS |
+ SMBHSTSTS_SMBALERT_STS);
if (status == SMBHSTSTS_INTR)
return 0;