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mmc: sdhci-of-bst: Fix memory leak in sdhci_bst_alloc_bounce_buffer()

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In sdhci_bst_alloc_bounce_buffer(), if dma_alloc_coherent() fails, the
function immediately returns -ENOMEM without releasing the reserved
memory, which results in a memory leak.

Add the missing of_reserved_mem_device_release() call before returning
-ENOMEM to properly clean up the reserved memory.

Fixes: 695824f456 ("mmc: sdhci: add Black Sesame Technologies BST C1200 controller driver")
Signed-off-by: Felix Gu <ustc.gu@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Felix Gu
2026-03-02 21:47:12 +08:00
committed by Ulf Hansson
parent 824254f3c2
commit 670f524fae
1 changed files with 3 additions and 1 deletions
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4
drivers/mmc/host/sdhci-of-bst.c
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@@ -425,8 +425,10 @@ static int sdhci_bst_alloc_bounce_buffer(struct sdhci_host *host)
host->bounce_buffer = dma_alloc_coherent(mmc_dev(mmc), bounce_size,
&host->bounce_addr, GFP_KERNEL);
if (!host->bounce_buffer)
if (!host->bounce_buffer) {
of_reserved_mem_device_release(mmc_dev(mmc));
return -ENOMEM;
}
host->bounce_buffer_size = bounce_size;