提交 9f9ff20d 编写于 作者: D Dan Carpenter 提交者: Dan Williams

dma/shdma: move dereference below the NULL check

"param" can be NULL here, so only dereference it after the check.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>
上级 b30a3f62
......@@ -580,7 +580,6 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_slave_sg(
sh_chan = to_sh_chan(chan);
param = chan->private;
slave_addr = param->config->addr;
/* Someone calling slave DMA on a public channel? */
if (!param || !sg_len) {
......@@ -589,6 +588,8 @@ static struct dma_async_tx_descriptor *sh_dmae_prep_slave_sg(
return NULL;
}
slave_addr = param->config->addr;
/*
* if (param != NULL), this is a successfully requested slave channel,
* therefore param->config != NULL too.
......
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