From 7ac1102b227b36550452b663fd39ab1c09378a95 Mon Sep 17 00:00:00 2001 From: Vlad Karpovich Date: Tue, 15 Aug 2023 12:29:08 -0500 Subject: [PATCH] firmware: cs_dsp: Fix new control name check Before adding a new FW control, its name is checked against existing controls list. But the string length in strncmp used to compare controls names is taken from the list, so if beginnings of the controls are matching, then the new control is not created. For example, if CAL_R control already exists, CAL_R_SELECTED is not created. The fix is to compare string lengths as well. Fixes: 6477960755fb ("ASoC: wm_adsp: Move check for control existence") Signed-off-by: Vlad Karpovich Link: https://lore.kernel.org/r/20230815172908.3454056-1-vkarpovi@opensource.cirrus.com Signed-off-by: Mark Brown --- drivers/firmware/cirrus/cs_dsp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c index 6a9aa97..49b70c7 100644 --- a/drivers/firmware/cirrus/cs_dsp.c +++ b/drivers/firmware/cirrus/cs_dsp.c @@ -978,7 +978,8 @@ static int cs_dsp_create_control(struct cs_dsp *dsp, ctl->alg_region.alg == alg_region->alg && ctl->alg_region.type == alg_region->type) { if ((!subname && !ctl->subname) || - (subname && !strncmp(ctl->subname, subname, ctl->subname_len))) { + (subname && (ctl->subname_len == subname_len) && + !strncmp(ctl->subname, subname, ctl->subname_len))) { if (!ctl->enabled) ctl->enabled = 1; return 0; -- 2.7.4