Nitworthy comments :).
On Thu, Apr 03, 2014 at 07:18:00PM +0300, Stanimir Varbanov wrote:
[..]
> +++ b/drivers/crypto/qce/dma.c
[..]
> +int qce_dma_request(struct device *dev, struct qce_dma_data *dma)
> +{
> + unsigned int memsize;
> + void *va;
> + int ret;
> +
> + dma->txchan = dma_request_slave_channel_reason(dev, "tx");
> + if (IS_ERR(dma->txchan)) {
> + ret = PTR_ERR(dma->txchan);
> + return ret;
> + }
> +
> + dma->rxchan = dma_request_slave_channel_reason(dev, "rx");
> + if (IS_ERR(dma->rxchan)) {
> + ret = PTR_ERR(dma->rxchan);
> + goto error_rx;
> + }
> +
> + memsize = QCE_RESULT_BUF_SZ + QCE_IGNORE_BUF_SZ;
> + va = kzalloc(memsize, GFP_KERNEL);
> + if (!va) {
> + ret = -ENOMEM;
> + goto error_nomem;
> + }
> +
> + dma->result_buf = va;
> + dma->ignore_buf = dma->result_buf + QCE_RESULT_BUF_SZ;
> +
> + return 0;
> +error_nomem:
> + if (!IS_ERR(dma->rxchan))
How could this condition ever be false?
> + dma_release_channel(dma->rxchan);
> +error_rx:
> + if (!IS_ERR(dma->txchan))
Same here.
> + dma_release_channel(dma->txchan);
> + return ret;
> +}
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