[PATCH AUTOSEL 5.4 02/43] dmaengine: acpi: Put the CSRT table after using it

From: Sasha Levin
Date: Mon Sep 07 2020 - 12:36:26 EST


From: Hanjun Guo <guohanjun@xxxxxxxxxx>

[ Upstream commit 7eb48dd094de5fe0e216b550e73aa85257903973 ]

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 <guohanjun@xxxxxxxxxx>
Link: https://lore.kernel.org/r/1595411661-15936-1-git-send-email-guohanjun@xxxxxxxxxx
Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 8a05db3343d39..dcbcb712de6e8 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) {
dev_warn(&adev->dev,
"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);
}

/**
--
2.25.1