diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-27 10:45:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-28 16:38:58 +0100 |
| commit | b046c6fec04e88c33e65500678fcaf700ccc5a40 (patch) | |
| tree | f79102748ebc3f8ef797f80f375436c7cc7b3f2d /drivers/dma | |
| parent | cd26d53a27d604bc25636abf90e6fef52604c9fc (diff) | |
Revert "dmaengine: imx-sdma: Fix memory leak"
This reverts commit af8eca600b408a0e59d2848dfcfad60413f626a9 which is
commit 02939cd167095f16328a1bd5cab5a90b550606df upstream.
Andreas writes:
This patch breaks our imx6 board with the attached trace.
Reverting the patch makes it boot again.
Reported-by: Andreas Tobler <andreas.tobler@onway.ch>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Robin Gong <yibin.gong@nxp.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/imx-sdma.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c index d66a7fdff898..ceb82e74f5b4 100644 --- a/drivers/dma/imx-sdma.c +++ b/drivers/dma/imx-sdma.c @@ -738,8 +738,12 @@ static void sdma_start_desc(struct sdma_channel *sdmac) return; } sdmac->desc = desc = to_sdma_desc(&vd->tx); - - list_del(&vd->node); + /* + * Do not delete the node in desc_issued list in cyclic mode, otherwise + * the desc allocated will never be freed in vchan_dma_desc_free_list + */ + if (!(sdmac->flags & IMX_DMA_SG_LOOP)) + list_del(&vd->node); sdma->channel_control[channel].base_bd_ptr = desc->bd_phys; sdma->channel_control[channel].current_bd_ptr = desc->bd_phys; @@ -1040,6 +1044,7 @@ static void sdma_channel_terminate_work(struct work_struct *work) spin_lock_irqsave(&sdmac->vc.lock, flags); vchan_get_all_descriptors(&sdmac->vc, &head); + sdmac->desc = NULL; spin_unlock_irqrestore(&sdmac->vc.lock, flags); vchan_dma_desc_free_list(&sdmac->vc, &head); } @@ -1047,19 +1052,11 @@ static void sdma_channel_terminate_work(struct work_struct *work) static int sdma_disable_channel_async(struct dma_chan *chan) { struct sdma_channel *sdmac = to_sdma_chan(chan); - unsigned long flags; - - spin_lock_irqsave(&sdmac->vc.lock, flags); sdma_disable_channel(chan); - if (sdmac->desc) { - vchan_terminate_vdesc(&sdmac->desc->vd); - sdmac->desc = NULL; + if (sdmac->desc) schedule_work(&sdmac->terminate_worker); - } - - spin_unlock_irqrestore(&sdmac->vc.lock, flags); return 0; } |