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