From 213c59501bbd6da8c56e95f90f8a8c6af2682002 Mon Sep 17 00:00:00 2001 From: Razvan Stefanescu 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 --- 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);