Useful to determine size of devcoreump before writing it out.
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Signed-off-by: Matthew Brost <matthew.br...@intel.com>
---
drivers/gpu/drm/drm_print.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
index cf24dfdeb6b2..a1a4de9f9c44 100644
--- a/drivers/gpu/drm/drm_print.c
+++ b/drivers/gpu/drm/drm_print.c
@@ -100,8 +100,9 @@ void __drm_puts_coredump(struct drm_printer *p, const char
*str)
copy = iterator->remain;
/* Copy out the bit of the string that we need */
- memcpy(iterator->data,
- str + (iterator->start - iterator->offset), copy);
+ if (iterator->data)
+ memcpy(iterator->data,
+ str + (iterator->start - iterator->offset),
copy);
iterator->offset = iterator->start + copy;
iterator->remain -= copy;
@@ -110,7 +111,8 @@ void __drm_puts_coredump(struct drm_printer *p, const char
*str)
len = min_t(ssize_t, strlen(str), iterator->remain);
- memcpy(iterator->data + pos, str, len);
+ if (iterator->data)
+ memcpy(iterator->data + pos, str, len);
iterator->offset += len;
iterator->remain -= len;
@@ -140,8 +142,9 @@ void __drm_printfn_coredump(struct drm_printer *p, struct
va_format *vaf)
if ((iterator->offset >= iterator->start) && (len < iterator->remain)) {
ssize_t pos = iterator->offset - iterator->start;
- snprintf(((char *) iterator->data) + pos,
- iterator->remain, "%pV", vaf);
+ if (iterator->data)
+ snprintf(((char *) iterator->data) + pos,
+ iterator->remain, "%pV", vaf);
iterator->offset += len;
iterator->remain -= len;
--
2.34.1
