From: Richard Fitzgerald Date: Thu, 27 Nov 2025 10:39:47 +0000 (+0000) Subject: firmware: cs_dsp: Use kvzalloc() to allocate control caches X-Git-Tag: v6.19-rc1~156^2~3^2~10 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c45d5d9803a4fb7d3e7f590094b7a2abcfe74ef6;p=thirdparty%2Fkernel%2Flinux.git firmware: cs_dsp: Use kvzalloc() to allocate control caches Use kvzalloc() instead of kzalloc() to allocate memory to cache the content of a firmware control. Most firmware controls are only small, typically a few bytes. But on some firmware there can be much larger controls for coefficient or model data. The overhead of kvzalloc() is negligible because most control allocs can be satisfied by the normal kmalloc() that kvzalloc() will try first. Signed-off-by: Richard Fitzgerald Link: https://patch.msgid.link/20251127103947.1094934-1-rf@opensource.cirrus.com Signed-off-by: Mark Brown --- diff --git a/drivers/firmware/cirrus/cs_dsp.c b/drivers/firmware/cirrus/cs_dsp.c index 216d2987fe443..60a2061c444c0 100644 --- a/drivers/firmware/cirrus/cs_dsp.c +++ b/drivers/firmware/cirrus/cs_dsp.c @@ -989,7 +989,7 @@ static void cs_dsp_signal_event_controls(struct cs_dsp *dsp, static void cs_dsp_free_ctl_blk(struct cs_dsp_coeff_ctl *ctl) { - kfree(ctl->cache); + kvfree(ctl->cache); kfree(ctl->subname); kfree(ctl); } @@ -1039,7 +1039,7 @@ static int cs_dsp_create_control(struct cs_dsp *dsp, ctl->type = type; ctl->offset = offset; ctl->len = len; - ctl->cache = kzalloc(ctl->len, GFP_KERNEL); + ctl->cache = kvzalloc(ctl->len, GFP_KERNEL); if (!ctl->cache) { ret = -ENOMEM; goto err_ctl_subname; @@ -1057,7 +1057,7 @@ static int cs_dsp_create_control(struct cs_dsp *dsp, err_list_del: list_del(&ctl->list); - kfree(ctl->cache); + kvfree(ctl->cache); err_ctl_subname: kfree(ctl->subname); err_ctl: