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* [PATCH] dmaengine: acpi: Put the CSRT table after using it
@ 2020-07-22  9:54 Hanjun Guo
  0 siblings, 0 replies; only message in thread
From: Hanjun Guo @ 2020-07-22  9:54 UTC (permalink / raw)
  To: Dan Williams, Vinod Koul; +Cc: dmaengine, linux-kernel, Hanjun Guo

The acpi_get_table() should be coupled with acpi_put_table() if
the mapped table is not used at runtime to release the table
mapping, put the CSRT table buf after using it.

Signed-off-by: Hanjun Guo <>
 drivers/dma/acpi-dma.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/acpi-dma.c b/drivers/dma/acpi-dma.c
index 8a05db3..dcbcb71 100644
--- a/drivers/dma/acpi-dma.c
+++ b/drivers/dma/acpi-dma.c
@@ -135,11 +135,13 @@ static void acpi_dma_parse_csrt(struct acpi_device *adev, struct acpi_dma *adma)
 		if (ret < 0) {
 				 "error in parsing resource group\n");
-			return;
+			break;
 		grp = (struct acpi_csrt_group *)((void *)grp + grp->length);
+	acpi_put_table((struct acpi_table_header *)csrt);

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2020-07-22  9:54 [PATCH] dmaengine: acpi: Put the CSRT table after using it Hanjun Guo

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