* [PATCH AUTOSEL 4.14 1/3] virtio_console: break out of buf poll on remove
@ 2022-03-16 14:18 Sasha Levin
2022-03-16 14:18 ` [PATCH AUTOSEL 4.14 2/3] ethernet: sun: Free the coherent when failing in probing Sasha Levin
2022-03-16 14:18 ` [PATCH AUTOSEL 4.14 3/3] spi: Fix invalid sgs value Sasha Levin
0 siblings, 2 replies; 3+ messages in thread
From: Sasha Levin @ 2022-03-16 14:18 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Michael S. Tsirkin, Sasha Levin, amit, gregkh, virtualization
From: "Michael S. Tsirkin" <mst@redhat.com>
[ Upstream commit 0e7174b9d5877130fec41fb4a16e0c2ee4958d44 ]
A common pattern for device reset is currently:
vdev->config->reset(vdev);
.. cleanup ..
reset prevents new interrupts from arriving and waits for interrupt
handlers to finish.
However if - as is common - the handler queues a work request which is
flushed during the cleanup stage, we have code adding buffers / trying
to get buffers while device is reset. Not good.
This was reproduced by running
modprobe virtio_console
modprobe -r virtio_console
in a loop.
Fix this up by calling virtio_break_device + flush before reset.
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1786239
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/char/virtio_console.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index 0fb3a8e62e62..2140d401523f 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -2001,6 +2001,13 @@ static void virtcons_remove(struct virtio_device *vdev)
list_del(&portdev->list);
spin_unlock_irq(&pdrvdata_lock);
+ /* Device is going away, exit any polling for buffers */
+ virtio_break_device(vdev);
+ if (use_multiport(portdev))
+ flush_work(&portdev->control_work);
+ else
+ flush_work(&portdev->config_work);
+
/* Disable interrupts for vqs */
vdev->config->reset(vdev);
/* Finish up work that's lined up */
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH AUTOSEL 4.14 2/3] ethernet: sun: Free the coherent when failing in probing
2022-03-16 14:18 [PATCH AUTOSEL 4.14 1/3] virtio_console: break out of buf poll on remove Sasha Levin
@ 2022-03-16 14:18 ` Sasha Levin
2022-03-16 14:18 ` [PATCH AUTOSEL 4.14 3/3] spi: Fix invalid sgs value Sasha Levin
1 sibling, 0 replies; 3+ messages in thread
From: Sasha Levin @ 2022-03-16 14:18 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Zheyu Ma, Andrew Lunn, David S . Miller, Sasha Levin, kuba,
tanghui20, christophe.jaillet, netdev
From: Zheyu Ma <zheyuma97@gmail.com>
[ Upstream commit bb77bd31c281f70ec77c9c4f584950a779e05cf8 ]
When the driver fails to register net device, it should free the DMA
region first, and then do other cleanup.
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/sun/sunhme.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/sun/sunhme.c b/drivers/net/ethernet/sun/sunhme.c
index 9e983e1d8249..7522f277e912 100644
--- a/drivers/net/ethernet/sun/sunhme.c
+++ b/drivers/net/ethernet/sun/sunhme.c
@@ -3165,7 +3165,7 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
if (err) {
printk(KERN_ERR "happymeal(PCI): Cannot register net device, "
"aborting.\n");
- goto err_out_iounmap;
+ goto err_out_free_coherent;
}
pci_set_drvdata(pdev, hp);
@@ -3198,6 +3198,10 @@ static int happy_meal_pci_probe(struct pci_dev *pdev,
return 0;
+err_out_free_coherent:
+ dma_free_coherent(hp->dma_dev, PAGE_SIZE,
+ hp->happy_block, hp->hblock_dvma);
+
err_out_iounmap:
iounmap(hp->gregs);
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH AUTOSEL 4.14 3/3] spi: Fix invalid sgs value
2022-03-16 14:18 [PATCH AUTOSEL 4.14 1/3] virtio_console: break out of buf poll on remove Sasha Levin
2022-03-16 14:18 ` [PATCH AUTOSEL 4.14 2/3] ethernet: sun: Free the coherent when failing in probing Sasha Levin
@ 2022-03-16 14:18 ` Sasha Levin
1 sibling, 0 replies; 3+ messages in thread
From: Sasha Levin @ 2022-03-16 14:18 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Biju Das, Lad Prabhakar, Geert Uytterhoeven, Mark Brown,
Sasha Levin, linux-spi
From: Biju Das <biju.das.jz@bp.renesas.com>
[ Upstream commit 1a4e53d2fc4f68aa654ad96d13ad042e1a8e8a7d ]
max_seg_size is unsigned int and it can have a value up to 2^32
(for eg:-RZ_DMAC driver sets dma_set_max_seg_size as U32_MAX)
When this value is used in min_t() as an integer type, it becomes
-1 and the value of sgs becomes 0.
Fix this issue by replacing the 'int' data type with 'unsigned int'
in min_t().
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20220307184843.9994-1-biju.das.jz@bp.renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 71f74015efb9..d26aefed16ac 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -774,10 +774,10 @@ static int spi_map_buf(struct spi_controller *ctlr, struct device *dev,
int i, ret;
if (vmalloced_buf || kmap_buf) {
- desc_len = min_t(int, max_seg_size, PAGE_SIZE);
+ desc_len = min_t(unsigned int, max_seg_size, PAGE_SIZE);
sgs = DIV_ROUND_UP(len + offset_in_page(buf), desc_len);
} else if (virt_addr_valid(buf)) {
- desc_len = min_t(int, max_seg_size, ctlr->max_dma_len);
+ desc_len = min_t(unsigned int, max_seg_size, ctlr->max_dma_len);
sgs = DIV_ROUND_UP(len, desc_len);
} else {
return -EINVAL;
--
2.34.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-03-16 14:20 UTC | newest]
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