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path: root/drivers/auxdisplay/ht16k33.c
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Diffstat (limited to 'drivers/auxdisplay/ht16k33.c')
-rw-r--r--drivers/auxdisplay/ht16k33.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/auxdisplay/ht16k33.c b/drivers/auxdisplay/ht16k33.c
index f66b45b235b0..ba6370974574 100644
--- a/drivers/auxdisplay/ht16k33.c
+++ b/drivers/auxdisplay/ht16k33.c
@@ -278,7 +278,7 @@ static bool ht16k33_keypad_scan(struct ht16k33_keypad *keypad)
}
}
input_sync(keypad->dev);
- memcpy(keypad->last_key_state, new_state, sizeof(new_state));
+ memcpy(keypad->last_key_state, new_state, sizeof(u16) * keypad->cols);
return pressed;
}
@@ -353,6 +353,12 @@ static int ht16k33_keypad_probe(struct i2c_client *client,
err = matrix_keypad_parse_of_params(&client->dev, &rows, &cols);
if (err)
return err;
+ if (rows > HT16K33_MATRIX_KEYPAD_MAX_ROWS ||
+ cols > HT16K33_MATRIX_KEYPAD_MAX_COLS) {
+ dev_err(&client->dev, "%u rows or %u cols out of range in DT\n",
+ rows, cols);
+ return -ERANGE;
+ }
keypad->rows = rows;
keypad->cols = cols;

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