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sb/intel/common: Reset Pre-OP after atomic SPI cycle is finished 

Make sure that the Pre-Op register is cleared when an atomic cycle has
been finished without errors.

Change-Id: Ied88337125b125474b411e2f39f668171d15bfac
Signed-off-by: Werner Zeh <werner.zeh@siemens.com>
Reviewed-on: https://review.coreboot.org/c/29634
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
This commit is contained in:
Werner Zeh 2018-11-14 10:55:52 +01:00 committed by Patrick Georgi
parent 26d706bb33
commit f13a6f9e05
1 changed files with 3 additions and 1 deletions
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4
src/southbridge/intel/common/spi.c
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@ -2,6 +2,7 @@
* Copyright (c) 2011 The Chromium OS Authors. * Copyright (c) 2011 The Chromium OS Authors.
* Copyright (C) 2009, 2010 Carl-Daniel Hailfinger * Copyright (C) 2009, 2010 Carl-Daniel Hailfinger
* Copyright (C) 2011 Stefan Tauner * Copyright (C) 2011 Stefan Tauner
* Copyright (C) 2018 Siemens AG
* *
* This program is free software; you can redistribute it and/or * This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as * modify it under the terms of the GNU General Public License as
@ -608,7 +609,7 @@ static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout,
return -1; return -1;
} }
return 0; goto spi_xfer_exit;
} }
/* /*
@ -673,6 +674,7 @@ static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout,
} }
} }
spi_xfer_exit:
/* Clear atomic preop now that xfer is done */ /* Clear atomic preop now that xfer is done */
writew_(0, cntlr->preop); writew_(0, cntlr->preop);