[PATCH] mtd: spi-nor: hisi-sfc: Add of_node_put() before break

[PATCH] mtd: spi-nor: hisi-sfc: Add of_node_put() before break

[Nishka Dasgupta]

Each iteration of for_each_available_child_of_node puts the previous
node, but in the case of a break from the middle of the loop, there
is no put, thus causing a memory leak. Hence add an of_node_put before
the break.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
---
 drivers/mtd/spi-nor/hisi-sfc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/mtd/spi-nor/hisi-sfc.c b/drivers/mtd/spi-nor/hisi-sfc.c
index dea43ea3eea3..6dac9dd8bf42 100644
--- a/drivers/mtd/spi-nor/hisi-sfc.c
+++ b/drivers/mtd/spi-nor/hisi-sfc.c
@@ -401,6 +401,7 @@ static int hisi_spi_nor_register_all(struct hifmc_host *host)
 
 		if (host->num_chip == HIFMC_MAX_CHIP_NUM) {
 			dev_warn(dev, "Flash device number exceeds the maximum chipselect number\n");
+			of_node_put(np);
 			break;
 		}
 	}
-- 
2.19.1


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Re: [PATCH] mtd: spi-nor: hisi-sfc: Add of_node_put() before break

[Tudor.Ambarus]

On 08/15/2019 09:03 AM, Nishka Dasgupta wrote:
> External E-Mail
> 
> 
> Each iteration of for_each_available_child_of_node puts the previous
> node, but in the case of a break from the middle of the loop, there
> is no put, thus causing a memory leak. Hence add an of_node_put before
> the break.
> Issue found with Coccinelle.
> 
> Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
> ---
>  drivers/mtd/spi-nor/hisi-sfc.c | 1 +
>  1 file changed, 1 insertion(+)
> 

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git,
spi-nor/next branch.

Thanks,
ta
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