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disp: msm: sde: add proper null checks

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This change adds proper null checks after using
kcalloc and returns early to avoid accessing null ptr.

Change-Id: I948ad37eb120e00c5f6e3ae2e3b967819cbd233b
Signed-off-by: Samantha Tran <samtran@codeaurora.org>
This commit is contained in:
Samantha Tran
2019-05-29 20:42:05 -07:00
parent 2eeed8c7ff
commit 005b2d46d0
1 changed files with 4 additions and 0 deletions
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4
msm/sde/sde_core_irq.c
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@@ -470,6 +470,10 @@ void sde_core_irq_preinstall(struct sde_kms *sde_kms)
sizeof(atomic_t), GFP_KERNEL);
sde_kms->irq_obj.irq_counts = kcalloc(sde_kms->irq_obj.total_irqs,
sizeof(atomic_t), GFP_KERNEL);
if (!sde_kms->irq_obj.irq_cb_tbl || !sde_kms->irq_obj.enable_counts
|| !sde_kms->irq_obj.irq_counts)
return;
for (i = 0; i < sde_kms->irq_obj.total_irqs; i++) {
INIT_LIST_HEAD(&sde_kms->irq_obj.irq_cb_tbl[i]);
atomic_set(&sde_kms->irq_obj.enable_counts[i], 0);