fpga: altera: cyclon2: Check function pointer before calling

As already done for the 'pre' function, a check is added to not follow a
NULL pointer, if somebody has not assigned a 'post' function.

Signed-off-by: Alexander Dahl <ada@thorsis.com>

diff --git a/drivers/fpga/cyclon2.c b/drivers/fpga/cyclon2.c
index ab979b0..c929cd2 100644 (file)
--- a/drivers/fpga/cyclon2.c
+++ b/drivers/fpga/cyclon2.c
@@ -183,8 +183,12 @@ static int CYC2_ps_load(Altera_desc *desc, const void *buf, size_t bsize)
                else
                        puts("Fail.\n");
 #endif
-               (*fn->post) (cookie);
 
+               /*
+                * Run the post configuration function if there is one.
+                */
+               if (*fn->post)
+                       (*fn->post) (cookie);
        } else {
                printf("%s: NULL Interface function table!\n", __func__);
        }