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| author | Xin Xiong <xiongx18@fudan.edu.cn> | 2022-03-04 16:53:32 +0800 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-03-14 16:58:41 +0100 |
| commit | fecbd4a317c95d73c849648c406bcf1b6a0ec1cf (patch) | |
| tree | 0507cd7d8467640c36a5d2cacea556ec6d8622f4 /drivers/mtd/nand/raw/nand_base.c | |
| parent | fba6eb4fc4e6819d9684d378ace339c4212d5ce1 (diff) | |
mtd: rawnand: atmel: fix refcount issue in atmel_nand_controller_init
The reference counting issue happens in several error handling paths
on a refcounted object "nc->dmac". In these paths, the function simply
returns the error code, forgetting to balance the reference count of
"nc->dmac", increased earlier by dma_request_channel(), which may
cause refcount leaks.
Fix it by decrementing the refcount of specific object in those error
paths.
Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver")
Co-developed-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Co-developed-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Signed-off-by: Xin Xiong <xiongx18@fudan.edu.cn>
Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220304085330.3610-1-xiongx18@fudan.edu.cn
Diffstat (limited to 'drivers/mtd/nand/raw/nand_base.c')
0 files changed, 0 insertions, 0 deletions