[U-Boot] [PATCH 4/7] powerpc/mpc8xxx: check SPD length before using part number

[York Sun]

From: york <yorksun at freescale.com>

Only use DDR DIMM part number if SPD has valid length, to prevent from
display garbage in case SPD doesn't cover these fields.

Signed-off-by: York Sun <yorksun at freescale.com>
---
 arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c b/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c
index 756b15f..838cebe 100644
--- a/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c
+++ b/arch/powerpc/cpu/mpc8xxx/ddr/ddr3_dimm_params.c
@@ -114,7 +114,8 @@ ddr_compute_dimm_parameters(const ddr3_spd_eeprom_t *spd,
 	 * and copying the part name in ASCII from the SPD onto it
 	 */
 	memset(pdimm->mpart, 0, sizeof(pdimm->mpart));
-	memcpy(pdimm->mpart, spd->mpart, sizeof(pdimm->mpart) - 1);
+	if ((spd->info_size_crc & 0xF) > 1)
+		memcpy(pdimm->mpart, spd->mpart, sizeof(pdimm->mpart) - 1);
 
 	/* DIMM organization parameters */
 	pdimm->n_ranks = ((spd->organization >> 3) & 0x7) + 1;
-- 
1.7.0.4