On Tue, 26 Jan 2021 07:55:29 +0100, Hui Wang wrote: > > > On 1/25/21 10:32 PM, Takashi Iwai wrote: > > On Mon, 25 Jan 2021 04:21:18 +0100, > > Hui Wang wrote: > >> This change adds audio jack injection feature through debugfs, with > >> this feature, we could validate alsa userspace changes by injecting > >> plugin or plugout events to the non-phantom audio jacks. > >> > >> With this change, the sound core will build the folders > >> $debugfs_mount_dir/sound/cardN if SND_DEBUG and DEBUG_FS are enabled. > <snip> > >> + return -ENOMEM; > >> + > >> + /* replace the chars which are not suitable for folder's name with _ */ > >> + for (i = 0; i < strlen(tname); i++) > > No need to use strlen(), just check the NUL character on tname[i]. > OK, will change it to: for (i = 0; tname[i] != '\0'; i++) Even the "!= '\0" part can be dropped, too :) for (i = 0; tname[i]; i++) .... Takashi