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From 213c59501bbd6da8c56e95f90f8a8c6af2682002 Mon Sep 17 00:00:00 2001
From: Razvan Stefanescu <razvan.stefanescu@freescale.com>
Date: Thu, 18 Feb 2016 10:54:40 +0200
Subject: [PATCH 217/226] dpaa2-evb: Add object version check
Abort probing if DPDMUX object version is smaller than required.
Signed-off-by: Razvan Stefanescu <razvan.stefanescu@freescale.com>
---
drivers/staging/fsl-dpaa2/evb/evb.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
--- a/drivers/staging/fsl-dpaa2/evb/evb.c
+++ b/drivers/staging/fsl-dpaa2/evb/evb.c
@@ -44,6 +44,10 @@
#include "dpdmux.h"
#include "dpdmux-cmd.h"
+/* Minimal supported DPDMUX version */
+#define DPDMUX_MIN_VER_MAJOR 5
+#define DPDMUX_MIN_VER_MINOR 0
+
/* IRQ index */
#define DPDMUX_MAX_IRQ_NUM 2
@@ -1004,6 +1008,17 @@ static int evb_init(struct fsl_mc_device
goto err_close;
}
+ /* Minimum supported DPDMUX version check */
+ if (priv->attr.version.major < DPDMUX_MIN_VER_MAJOR ||
+ (priv->attr.version.major == DPDMUX_MIN_VER_MAJOR &&
+ priv->attr.version.minor < DPDMUX_MIN_VER_MINOR)) {
+ dev_err(dev, "DPDMUX version %d.%d not supported. Use %d.%d or greater.\n",
+ priv->attr.version.major, priv->attr.version.minor,
+ DPDMUX_MIN_VER_MAJOR, DPDMUX_MIN_VER_MAJOR);
+ err = -ENOTSUPP;
+ goto err_close;
+ }
+
err = dpdmux_reset(priv->mc_io, 0, priv->mux_handle);
if (unlikely(err)) {
dev_err(dev, "dpdmux_reset err %d\n", err);
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