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dm: dump.c: Fix segfault when entry->of_match is NULL

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Currently, dm drivers command produces a segfault:
=> dm drivers
Driver                Compatible
--------------------------------
Segmentation fault (core dumped)

This is caused by a NULL pointer dereference of entry->of_match.
Add a check to prevent this.

Signed-off-by: Ovidiu Panait <ovpanait@gmail.com>
Cc: Sean Anderson <seanga2@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
This commit is contained in:
Ovidiu Panait 2020-04-05 19:47:40 +03:00 • committed by Simon Glass
parent dfd5321bec
commit 02197fa749
1 changed files with 2 additions and 1 deletions
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3
drivers/core/dump.c
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@ -107,7 +107,8 @@ void dm_dump_drivers(void)
puts("Driver Compatible\n"); puts("Driver Compatible\n");
puts("--------------------------------\n"); puts("--------------------------------\n");
for (entry = d; entry < d + n_ents; entry++) { for (entry = d; entry < d + n_ents; entry++) {
for (match = entry->of_match; match->compatible; match++) for (match = entry->of_match;
match && match->compatible; match++)
printf("%-20.20s %s\n", printf("%-20.20s %s\n",
match == entry->of_match ? entry->name : "", match == entry->of_match ? entry->name : "",
match->compatible); match->compatible);