linux-stable.git/drivers/hsi/controllers, branch v4.9.331

HSI: omap_ssi_port: Fix dma_map_sg error check

2022-10-26T11:15:42+00:00

[ Upstream commit 551e325bbd3fb8b5a686ac1e6cf76e5641461cf2 ]

dma_map_sg return 0 on error, in case of error return -EIO
to caller.

Cc: Sebastian Reichel 
Cc: linux-kernel@vger.kernel.org (open list)
Fixes: b209e047bc74 ("HSI: Introduce OMAP SSI driver")
Signed-off-by: Jack Wang 
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

HSI: omap_ssi: Fix refcount leak in ssi_probe

2022-10-26T11:15:42+00:00

[ Upstream commit 9a2ea132df860177b33c9fd421b26c4e9a0a9396 ]

When returning or breaking early from a
for_each_available_child_of_node() loop, we need to explicitly call
of_node_put() on the child node to possibly release the node.

Fixes: b209e047bc74 ("HSI: Introduce OMAP SSI driver")
Signed-off-by: Miaoqian Lin 
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

HSI: omap_ssi: Don't jump to free ID in ssi_add_controller()

2020-12-29T12:44:56+00:00

[ Upstream commit 41fff6e19bc8d6d8bca79ea388427c426e72e097 ]

In current code, it jumps to ida_simple_remove() when ida_simple_get()
failes to allocate an ID. Just return to fix it.

Fixes: 0fae198988b8 ("HSI: omap_ssi: built omap_ssi and omap_ssi_port into one module")
Signed-off-by: Jing Xiangfeng 
Signed-off-by: Sebastian Reichel 
Signed-off-by: Sasha Levin

HSI: omap_ssi: drop pm_runtime_irq_safe

2016-06-27T22:40:08+00:00

pm_runtime_irq_safe increases the parents runtime usage
counter effectively keeping the OMAP SoC from idling.

Signed-off-by: Sebastian Reichel 
Acked-by: Tony Lindgren 
Tested-by: Pavel Machek

HSI: omap_ssi_port: use rpm autosuspend API

2016-06-27T22:40:03+00:00

Instead of immediately sending the SSI module to
sleep, wait some time in case of new incoming or
outgoing traffic.

Signed-off-by: Sebastian Reichel 
Tested-by: Pavel Machek

HSI: omap_ssi: call msg->complete() from process context

2016-06-27T22:40:00+00:00

msg->complete() should always be called from process context once
irq_safe runtime pm flag is no longer set for omap-ssi.

Signed-off-by: Sebastian Reichel 
Tested-by: Pavel Machek

HSI: omap_ssi_port: ensure clocks are kept enabled during transfer

2016-06-27T22:39:56+00:00

ensure, that clocks remain enabled, when a transfer is started.

Signed-off-by: Sebastian Reichel 
Tested-by: Pavel Machek

HSI: omap_ssi_port: replace pm_runtime_put_sync with non-sync variant

2016-06-27T22:39:43+00:00

There is no need to wait for hardware to really reach idle states,
so just release runtime PM asynchronously.

Signed-off-by: Sebastian Reichel 
Tested-by: Pavel Machek

HSI: omap_ssi_port: avoid calling runtime_pm_*_sync inside spinlock

2016-06-27T22:39:39+00:00

runtime_pm_*_sync can block when irq_safe flag is removed
from omap-ssi driver, so it may not be called while a
spinlock is held.

Signed-off-by: Sebastian Reichel 
Tested-by: Pavel Machek

HSI: omap_ssi_port: avoid pm_runtime_get_sync in ssi_start_dma and ssi_start_pio

2016-06-27T22:39:36+00:00

These functions may be called from atomic context,
so avoid synchronous runtime pm calls.

Signed-off-by: Sebastian Reichel 
Tested-by: Pavel Machek