buf was used as destination and as parameter to sprintf
which triggers an undefined behaviour.
This commit removes this usage of sprintf and uses strcat
to append strings to buf variable.

Signed-off-by: Francois Berder <fber...@outlook.fr>
---
 board/freescale/t208xqds/eth_t208xqds.c | 40 ++++++++++++-------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/board/freescale/t208xqds/eth_t208xqds.c 
b/board/freescale/t208xqds/eth_t208xqds.c
index 9f299227e2..b55078c8fe 100644
--- a/board/freescale/t208xqds/eth_t208xqds.c
+++ b/board/freescale/t208xqds/eth_t208xqds.c
@@ -210,8 +210,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                   "phy_1gkx1");
                                fdt_status_okay_by_alias(fdt, "1gkx_pcs_mdio1");
-                               sprintf(buf, "%s%s%s", buf, "lane-c,",
-                                               (char *)lane_mode[0]);
+                               strcat(buf, "lane-c,");
+                               strcat(buf, (char *)lane_mode[0]);
                                out_be32(&srds_regs->srdspccr1, srds1_pccr1 |
                                         PCCR1_SGMIIH_KX_MASK);
                                break;
@@ -222,8 +222,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                   "phy_1gkx2");
                                fdt_status_okay_by_alias(fdt, "1gkx_pcs_mdio2");
-                               sprintf(buf, "%s%s%s", buf, "lane-d,",
-                                               (char *)lane_mode[0]);
+                               strcat(buf, "lane-d,");
+                               strcat(buf, (char *)lane_mode[0]);
                                out_be32(&srds_regs->srdspccr1, srds1_pccr1 |
                                         PCCR1_SGMIIG_KX_MASK);
                                break;
@@ -234,8 +234,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                   "phy_1gkx9");
                                fdt_status_okay_by_alias(fdt, "1gkx_pcs_mdio9");
-                               sprintf(buf, "%s%s%s", buf, "lane-a,",
-                                               (char *)lane_mode[0]);
+                               strcat(buf, "lane-a,");
+                               strcat(buf, (char *)lane_mode[0]);
                                out_be32(&srds_regs->srdspccr1, srds1_pccr1 |
                                         PCCR1_SGMIIE_KX_MASK);
                                break;
@@ -247,8 +247,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                                   "phy_1gkx10");
                                fdt_status_okay_by_alias(fdt,
                                                         "1gkx_pcs_mdio10");
-                               sprintf(buf, "%s%s%s", buf, "lane-b,",
-                                               (char *)lane_mode[0]);
+                               strcat(buf, "lane-b,");
+                               strcat(buf, (char *)lane_mode[0]);
                                out_be32(&srds_regs->srdspccr1, srds1_pccr1 |
                                         PCCR1_SGMIIF_KX_MASK);
                                break;
@@ -269,8 +269,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                   "phy_1gkx5");
                                fdt_status_okay_by_alias(fdt, "1gkx_pcs_mdio5");
-                               sprintf(buf, "%s%s%s", buf, "lane-g,",
-                                               (char *)lane_mode[0]);
+                               strcat(buf, "lane-g,");
+                               strcat(buf, (char *)lane_mode[0]);
                                out_be32(&srds_regs->srdspccr1, srds1_pccr1 |
                                         PCCR1_SGMIIC_KX_MASK);
                                break;
@@ -281,8 +281,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                   "phy_1gkx6");
                                fdt_status_okay_by_alias(fdt, "1gkx_pcs_mdio6");
-                               sprintf(buf, "%s%s%s", buf, "lane-h,",
-                                               (char *)lane_mode[0]);
+                               strcat(buf, "lane-h,");
+                               strcat(buf, (char *)lane_mode[0]);
                                out_be32(&srds_regs->srdspccr1, srds1_pccr1 |
                                         PCCR1_SGMIID_KX_MASK);
                                break;
@@ -328,8 +328,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                "phy_xfi9");
                                fdt_status_okay_by_alias(fdt, "xfi_pcs_mdio9");
-                               sprintf(buf, "%s%s%s", buf, "lane-a,",
-                                               (char *)lane_mode[1]);
+                               strcat(buf, "lane-a,");
+                               strcat(buf, (char *)lane_mode[1]);
                        }
                                break;
                        case FM1_10GEC2:
@@ -339,8 +339,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                "phy_xfi10");
                                fdt_status_okay_by_alias(fdt, "xfi_pcs_mdio10");
-                               sprintf(buf, "%s%s%s", buf, "lane-b,",
-                                               (char *)lane_mode[1]);
+                               strcat(buf, "lane-b,");
+                               strcat(buf, (char *)lane_mode[1]);
                        }
                                break;
                        case FM1_10GEC3:
@@ -350,8 +350,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                "phy_xfi1");
                                fdt_status_okay_by_alias(fdt, "xfi_pcs_mdio1");
-                               sprintf(buf, "%s%s%s", buf, "lane-c,",
-                                               (char *)lane_mode[1]);
+                               strcat(buf, "lane-c,");
+                               strcat(buf, (char *)lane_mode[1]);
                        }
                                break;
                        case FM1_10GEC4:
@@ -361,8 +361,8 @@ void board_ft_fman_fixup_port(void *fdt, char *compat, 
phys_addr_t addr,
                                fdt_set_phy_handle(fdt, compat, addr,
                                                "phy_xfi2");
                                fdt_status_okay_by_alias(fdt, "xfi_pcs_mdio2");
-                               sprintf(buf, "%s%s%s", buf, "lane-d,",
-                                               (char *)lane_mode[1]);
+                               strcat(buf, "lane-d,");
+                               strcat(buf, (char *)lane_mode[1]);
                        }
                                break;
                        default:
-- 
2.34.1

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