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soc/intel/tigerlake: Avoid NULL pointer dereference 

Coverity detects pointer dev as FORWARD_NULL. Add sanity check
for dev to prevent NULL pointer dereference if dev did not point
to the audio device.

BUG=CID 1420208
TEST=Built image successfully.

Change-Id: I2a62da44c7044f9dc281eae0949f7f7b612ab238
Signed-off-by: John Zhao <john.zhao@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39261
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
This commit is contained in:
John Zhao 2020-03-03 10:48:25 -08:00 committed by Patrick Georgi
parent 58cf6030f5
commit 97fe371b9f
1 changed files with 5 additions and 1 deletions
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6
src/soc/intel/tigerlake/romstage/fsp_params_jsl.c
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@ -95,7 +95,11 @@ static void soc_memory_init_params(FSP_M_CONFIG *m_cfg,
m_cfg->DdiPortCDdc = config->DdiPortCDdc;
/* Audio */
m_cfg->PchHdaEnable = pcidev_path_on_root(PCH_DEVFN_HDA) ? dev->enabled : 0;
dev = pcidev_path_on_root(PCH_DEVFN_HDA);
if (!dev)
m_cfg->PchHdaEnable = 0;
else
m_cfg->PchHdaEnable = dev->enabled;
m_cfg->PchHdaDspEnable = config->PchHdaDspEnable;
m_cfg->PchHdaAudioLinkHdaEnable = config->PchHdaAudioLinkHdaEnable;