[PATCH] omap3isp: ispstat: fix potential NULL pointer dereference

[Gustavo A. R. Silva]

new_conf is indirectly dereferenced before it is null checked, hence
there is a potential null pointer dereference.

Fix this by moving the pointer dereference after new_conf has been
properly null checked.

Addresses-Coverity-ID: 1468386 ("Dereference before null check")
Signed-off-by: Gustavo A. R. Silva <gust...@embeddedor.com>
---
 drivers/media/platform/omap3isp/ispstat.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/omap3isp/ispstat.c 
b/drivers/media/platform/omap3isp/ispstat.c
index 0b31f6c..549c7ab 100644
--- a/drivers/media/platform/omap3isp/ispstat.c
+++ b/drivers/media/platform/omap3isp/ispstat.c
@@ -522,8 +522,8 @@ int omap3isp_stat_config(struct ispstat *stat, void 
*new_conf)
 {
        int ret;
        unsigned long irqflags;
-       struct ispstat_generic_config *user_cfg = new_conf;
-       u32 buf_size = user_cfg->buf_size;
+       struct ispstat_generic_config *user_cfg;
+       u32 buf_size;
 
        if (!new_conf) {
                dev_dbg(stat->isp->dev, "%s: configuration is NULL\n",
@@ -531,6 +531,9 @@ int omap3isp_stat_config(struct ispstat *stat, void 
*new_conf)
                return -EINVAL;
        }
 
+       user_cfg = new_conf;
+       buf_size = user_cfg->buf_size;
+
        mutex_lock(&stat->ioctl_lock);
 
        dev_dbg(stat->isp->dev,
-- 
2.7.4