Commit d07e9fad authored by Alamy Liu's avatar Alamy Liu Committed by Ulf Hansson

mmc: cqhci: Fix a tiny potential memory leak on error condition

Free up the allocated memory in the case of error return

The value of mmc_host->cqe_enabled stays 'false'. Thus, cqhci_disable
(mmc_cqe_ops->cqe_disable) won't be called to free the memory.  Also,
cqhci_disable() seems to be designed to disable and free all resources, not
suitable to handle this corner case.

Fixes: a4080225 ("mmc: cqhci: support for command queue enabled host")
Signed-off-by: default avatarAlamy Liu <alamy.liu@gmail.com>
Acked-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 27ec9dc1
...@@ -217,12 +217,21 @@ static int cqhci_host_alloc_tdl(struct cqhci_host *cq_host) ...@@ -217,12 +217,21 @@ static int cqhci_host_alloc_tdl(struct cqhci_host *cq_host)
cq_host->desc_size, cq_host->desc_size,
&cq_host->desc_dma_base, &cq_host->desc_dma_base,
GFP_KERNEL); GFP_KERNEL);
if (!cq_host->desc_base)
return -ENOMEM;
cq_host->trans_desc_base = dmam_alloc_coherent(mmc_dev(cq_host->mmc), cq_host->trans_desc_base = dmam_alloc_coherent(mmc_dev(cq_host->mmc),
cq_host->data_size, cq_host->data_size,
&cq_host->trans_desc_dma_base, &cq_host->trans_desc_dma_base,
GFP_KERNEL); GFP_KERNEL);
if (!cq_host->desc_base || !cq_host->trans_desc_base) if (!cq_host->trans_desc_base) {
dmam_free_coherent(mmc_dev(cq_host->mmc), cq_host->desc_size,
cq_host->desc_base,
cq_host->desc_dma_base);
cq_host->desc_base = NULL;
cq_host->desc_dma_base = 0;
return -ENOMEM; return -ENOMEM;
}
pr_debug("%s: cqhci: desc-base: 0x%p trans-base: 0x%p\n desc_dma 0x%llx trans_dma: 0x%llx\n", pr_debug("%s: cqhci: desc-base: 0x%p trans-base: 0x%p\n desc_dma 0x%llx trans_dma: 0x%llx\n",
mmc_hostname(cq_host->mmc), cq_host->desc_base, cq_host->trans_desc_base, mmc_hostname(cq_host->mmc), cq_host->desc_base, cq_host->trans_desc_base,
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment