Commit 20b5d24c authored Jun 14, 2019 by Bitan Biswas Committed by Jassi Brar Jul 10, 2019

mailbox: tegra: avoid resume NULL mailboxes



If Tegra HSP device tree does not have 'shared irqs',
mailboxes pointer is NULL. Add non-NULL HSP mailboxes
check in resume callback before tegra_hsp_mailbox_startup()
call and prevent NULL pointer exception.

Signed-off-by: Bitan Biswas <bbiswas@nvidia.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>

parent b1a39953

drivers/mailbox/tegra-hsp.c

+6 −4

Original line number	Diff line number	Diff line
		@@ -782,12 +782,14 @@ static int __maybe_unused tegra_hsp_resume(struct device *dev)
		tegra_hsp_doorbell_startup(db->channel.chan);
		}

		if (hsp->mailboxes) {
		for (i = 0; i < hsp->num_sm; i++) {
		struct tegra_hsp_mailbox *mb = &hsp->mailboxes[i];

		if (mb->channel.chan->cl)
		tegra_hsp_mailbox_startup(mb->channel.chan);
		}
		}

		return 0;
		}