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From 5366dc8896ca7cf028db73643860821b189a1dfd Mon Sep 17 00:00:00 2001
From: Horia Geanta <horia.geanta@nxp.com>
Date: Mon, 11 Apr 2016 11:50:26 -0500
Subject: [PATCH 175/226] staging: fsl-mc: add quirk handling for dpseci
objects < 4.0
dpseci objects < 4.0 are not coherent-- in spite of the fact
that the MC reports them to be coherent in certain versions.
Add a special case to set the no shareability flag for dpseci
objects < 4.0.
Signed-off-by: Horia Geanta <horia.geanta@nxp.com>
(Stuart: reworded commit message, updated comment in patch)
Signed-off-by: Stuart Yoder <stuart.yoder@nxp.com>
Acked-by: German Rivera <german.rivera@nxp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/staging/fsl-mc/bus/dprc-driver.c | 9 +++++++++
1 file changed, 9 insertions(+)
--- a/drivers/staging/fsl-mc/bus/dprc-driver.c
+++ b/drivers/staging/fsl-mc/bus/dprc-driver.c
@@ -312,6 +312,15 @@ int dprc_scan_objects(struct fsl_mc_devi
continue;
}
+ /*
+ * add a quirk for all versions of dpsec < 4.0...none
+ * are coherent regardless of what the MC reports.
+ */
+ if ((strcmp(obj_desc->type, "dpseci") == 0) &&
+ (obj_desc->ver_major < 4))
+ obj_desc->flags |=
+ DPRC_OBJ_FLAG_NO_MEM_SHAREABILITY;
+
irq_count += obj_desc->irq_count;
dev_dbg(&mc_bus_dev->dev,
"Discovered object: type %s, id %d\n",
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