Hi Peng,

On 7/13/2026 2:12 PM, Peng Fan wrote:
Hi Tanmay,

On Mon, Jul 13, 2026 at 12:20:10AM +0530, Kathpalia, Tanmay wrote:
On 7/12/2026 6:37 PM, Peng Fan (OSS) wrote:
From: Peng Fan <[email protected]>

sdhci_init() allocates a 512KB aligned bounce buffer for controllers
with SDHCI_QUIRK_32BIT_DMA_ADDR. In the non-DM code path, sdhci_init()
is registered as ops->init and called on every mmc_init(). Each call
allocates a new buffer without checking or freeing the previous one,
leaking 512KB per re-initialization.

Fix by guarding the allocation with !host->align_buffer so it only
allocates on the first call.

Signed-off-by: Peng Fan <[email protected]>
Signed-off-by: Tanmay Kathpalia <[email protected]>
This should be R-b or A-b. I will use R-b if no objections.


Yes, R-b is fine.

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