The DP device identification string read from the DPCD registers is 6 characters long at max. and we store it in a char array of the same length without space for the NULL terminator. Fix this by increasing the array size to 7 and initialize it to an empty string. v2: Use %*pE format specifier (Jani) Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx> --- drivers/gpu/drm/drm_dp_helper.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 3e6fe82..2d42760 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -544,7 +544,7 @@ void drm_dp_downstream_debug(struct seq_file *m, DP_DETAILED_CAP_INFO_AVAILABLE; int clk; int bpc; - char id[6]; + char id[6] = ""; int len; uint8_t rev[2]; int type = port_cap[0] & DP_DS_PORT_TYPE_MASK; @@ -584,7 +584,8 @@ void drm_dp_downstream_debug(struct seq_file *m, } drm_dp_downstream_id(aux, id); - seq_printf(m, "\t\tID: %s\n", id); + len = strnlen(id, 6); + seq_printf(m, "\t\tID: %*pE\n", len, id); len = drm_dp_dpcd_read(aux, DP_BRANCH_HW_REV, &rev[0], 1); if (len > 0) -- 2.7.4 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
