When calling debugfs functions, they can now return error values if something went wrong. If that happens, return a NULL as a *dentry to the relay core instead of passing it an illegal pointer. The relay core should be able to handle an illegal pointer, but add this check to be safe. Cc: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Cc: ath10k@xxxxxxxxxxxxxxxxxxx Cc: linux-wireless@xxxxxxxxxxxxxxx Cc: netdev@xxxxxxxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/net/wireless/ath/ath10k/spectral.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/spectral.c b/drivers/net/wireless/ath/ath10k/spectral.c index 653b6d013207..4a7fa3e4e99f 100644 --- a/drivers/net/wireless/ath/ath10k/spectral.c +++ b/drivers/net/wireless/ath/ath10k/spectral.c @@ -494,6 +494,9 @@ static struct dentry *create_buf_file_handler(const char *filename, buf_file = debugfs_create_file(filename, mode, parent, buf, &relay_file_operations); + if (IS_ERR(buf_file)) + return NULL; + *is_global = 1; return buf_file; } -- 2.20.1
