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soc/nvidia/tegra210: Add null pointer check 

Check that tx is not null before accessing it, similar to the previous
if statements.

Change-Id: I820cb670026bb12a54c63227aa04e778fd49c66a
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Found-by: Coverity CID 1294805
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34530
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
This commit is contained in:
Jacob Garber 2019-07-23 15:45:20 -06:00 committed by Patrick Georgi
parent e24585c834
commit bd00fb1366
1 changed files with 1 additions and 1 deletions
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src/soc/nvidia/tegra210/dsi.c
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@ -769,7 +769,7 @@ static ssize_t tegra_dsi_host_transfer(struct mipi_dsi_host *host,
tegra_dsi_writel(dsi, value, DSI_WR_DATA); tegra_dsi_writel(dsi, value, DSI_WR_DATA);
/* write payload (if any) */ /* write payload (if any) */
if (msg->tx_len > 2) { if (tx && msg->tx_len > 2) {
for (j = 2; j < msg->tx_len; j += 4) { for (j = 2; j < msg->tx_len; j += 4) {
value = 0; value = 0;