]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
ASoC: skl: Fix kernel warning due to zero NHTL entry
authorTakashi Iwai <tiwai@suse.de>
Wed, 3 Jan 2018 15:38:46 +0000 (16:38 +0100)
committerMark Brown <broonie@kernel.org>
Wed, 3 Jan 2018 15:42:20 +0000 (15:42 +0000)
commit20a1ea2222e7cbf96e9bf8579362e971491e6aea
tree10f5cb4ad4fece49a6cea56b24ac297b6e13929a
parent4fbd8d194f06c8a3fd2af1ce560ddb31f7ec8323
ASoC: skl: Fix kernel warning due to zero NHTL entry

I got the following kernel warning when loading snd-soc-skl module on
Dell Latitude 7270 laptop:
 memremap attempted on mixed range 0x0000000000000000 size: 0x0
 WARNING: CPU: 0 PID: 484 at kernel/memremap.c:98 memremap+0x8a/0x180
 Call Trace:
  skl_nhlt_init+0x82/0xf0 [snd_soc_skl]
  skl_probe+0x2ee/0x7c0 [snd_soc_skl]
  ....

It seems that the machine doesn't support the SKL DSP gives the empty
NHLT entry, and it triggers the warning.  For avoiding it, let do the
zero check before calling memremap().

Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
sound/soc/intel/skylake/skl-nhlt.c