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.pandi...@intel.com>
---
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
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