[PATCH v6 13/23] dmaengine: ste_dma40: Fix probe LCLA free

[Linus Walleij <linusw@kernel.org>]

When LCLA is placed in ESRAM, d40_probe() stores a devm_ioremap()
address in lcla_pool.base and leaves base_unaligned unset. The
destroy_cache error path can then pass the ioremap address to
free_pages().

Only free lcla_pool.base with free_pages() when the driver allocated the
LCLA pool from normal memory. The ESRAM mapping is devm-managed.

Fixes: 339f5041089a ("dmaengine: ste_dma40: Use managed resources")
Reported-by: sashiko-bot@kernel.org
Closes: https://lore.kernel.org/dmaengine/20260819225114.AE1511F000E9@smtp.kernel.org/
Assisted-by: LLM
Signed-off-by: Linus Walleij <linusw@kernel.org>
---
 drivers/dma/ste_dma40.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 8998466faa76..b25e9ed5fcb9 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -3913,7 +3913,8 @@ static int __init d40_probe(struct platform_device *pdev)
 				 SZ_1K * base->num_phy_chans,
 				 DMA_TO_DEVICE);
 
-	if (!base->lcla_pool.base_unaligned && base->lcla_pool.base)
+	if (!base->plat_data->use_esram_lcla &&
+	    !base->lcla_pool.base_unaligned && base->lcla_pool.base)
 		free_pages((unsigned long)base->lcla_pool.base,
 			   base->lcla_pool.alloc_order);
 

-- 
2.55.0