Commit d2c85ac2 authored by Insu Yun's avatar Insu Yun Committed by Sebastian Reichel
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hsi: correctly handle return value of kzalloc 



Since kzalloc can be failed in memory pressure,
its return value should be checked and handled.

Signed-off-by: default avatarInsu Yun <wuninsu@gmail.com>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent e74eba04

drivers/hsi/hsi.c

+11 −1
Original line number Diff line number Diff line
@@ -85,12 +85,14 @@ struct hsi_client *hsi_new_client(struct hsi_port *port, 


	cl = kzalloc(sizeof(*cl), GFP_KERNEL);

	if (!cl)

		return NULL;

		goto err;



	cl->tx_cfg = info->tx_cfg;

	if (cl->tx_cfg.channels) {

		size = cl->tx_cfg.num_channels * sizeof(*cl->tx_cfg.channels);

		cl->tx_cfg.channels = kzalloc(size , GFP_KERNEL);

		if (!cl->tx_cfg.channels)

			goto err_tx;

		memcpy(cl->tx_cfg.channels, info->tx_cfg.channels, size);

	}
@@ -98,6 +100,8 @@ struct hsi_client *hsi_new_client(struct hsi_port *port, 
	if (cl->rx_cfg.channels) {

		size = cl->rx_cfg.num_channels * sizeof(*cl->rx_cfg.channels);

		cl->rx_cfg.channels = kzalloc(size , GFP_KERNEL);

		if (!cl->rx_cfg.channels)

			goto err_rx;

		memcpy(cl->rx_cfg.channels, info->rx_cfg.channels, size);

	}
@@ -114,6 +118,12 @@ struct hsi_client *hsi_new_client(struct hsi_port *port, 
	}



	return cl;

err_rx:

	kfree(cl->tx_cfg.channels);

err_tx:

	kfree(cl);

err:

	return NULL;

}

EXPORT_SYMBOL_GPL(hsi_new_client);