tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

dmaengine: xilinx: xdma: Fix data synchronisation in xdma_channel_isr()

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2075154

commit 462237d2d93fc9e9221d1cf9f773954d27da83c0 upstream.

Requests the vchan lock before using xdma->stop_request.

Fixes: 6a40fb824596 ("dmaengine: xilinx: xdma: Fix synchronization issue")
Cc: stable@vger.kernel.org
Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com>
Link: https://lore.kernel.org/r/20240607-xdma-fixes-v2-1-0282319ce345@bootlin.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Roxana Nicolescu <roxana.nicolescu@canonical.com>
This commit is contained in:
Louis Chauvet
2024-06-07 10:34:38 +02:00
committed by Roxana Nicolescu
parent ab59ee3548
commit d8d7aff50f
1 changed files with 2 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/dma/xilinx/xdma.c
+2 -2
View File
@@ -885,11 +885,11 @@ static irqreturn_t xdma_channel_isr(int irq, void *dev_id)
u32 st;
bool repeat_tx;
spin_lock(&xchan->vchan.lock);
if (xchan->stop_requested)
complete(&xchan->last_interrupt);
spin_lock(&xchan->vchan.lock);
/* get submitted request */
vd = vchan_next_desc(&xchan->vchan);
if (!vd)