linux.git/drivers/memory, branch v5.11.8

memory: ti-aemif: Drop child node when jumping out loop

2021-03-04T11:13:43+00:00

[ Upstream commit 94e9dd43cf327366388c8f146bccdc6322c0d999 ]

Call of_node_put() to decrement the reference count of the child node
child_np when jumping out of the loop body of
for_each_available_child_of_node(), which is a macro that increments and
decrements the reference count of child node. If the loop is broken, the
reference of the child node should be dropped manually.

Fixes: 5a7c81547c1d ("memory: ti-aemif: introduce AEMIF driver")
Signed-off-by: Pan Bian 
Link: https://lore.kernel.org/r/20210121090359.61763-1-bianpan2016@163.com
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Sasha Levin

memory: mtk-smi: Fix PM usage counter unbalance in mtk_smi ops

2021-03-04T11:13:38+00:00

[ Upstream commit a2d522ff0f5cc26915c4ccee9457fd4b4e1edc48 ]

pm_runtime_get_sync will increment pm usage counter
even it failed. Forgetting to putting operation will
result in reference leak here. We fix it by replacing
it with pm_runtime_resume_and_get to keep usage counter
balanced.

Fixes: 4f0a1a1ae3519 ("memory: mtk-smi: Invoke pm runtime_callback to enable clocks")
Signed-off-by: Zhang Qilong 
Link: https://lore.kernel.org/r/20201123102118.3866195-1-zhangqilong3@huawei.com
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Sasha Levin

Merge tag 'memory-controller-drv-tegra-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers

2020-12-08T23:40:02+00:00

Memory controller drivers for v5.11 - Tegra SoC, part two

Continuation of work on Tegra SoC memory controllers towards adding
interconnect support and integration with devfreq.

This brings few more patches including one which removes/fixes annoying
warning if the DTS patches get applied.  This is expected and only
informs that new features of Tegra memory controller drivers will not be
enabled however the warning itself could look worrying.

* tag 'memory-controller-drv-tegra-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl:
  memory: tegra30: Support interconnect framework
  memory: tegra20: Support hardware versioning and clean up OPP table initialization
  dt-bindings: memory: tegra20-emc: Document opp-supported-hw property

Link: https://lore.kernel.org/r/20201207075758.5501-2-krzk@kernel.org
Signed-off-by: Arnd Bergmann

Merge tag 'memory-controller-drv-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers

2020-12-08T23:40:01+00:00

Memory controller drivers for v5.11, part two

1. Several fixes for Renesas RPC-IF driver.
2. Correct compile testing of TI EMIF SRAM driver.
3. Fix potential NULL pointer in JZ4780 NEMC driver.

* tag 'memory-controller-drv-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl:
  memory: jz4780_nemc: Fix potential NULL dereference in jz4780_nemc_probe()
  memory: ti-emif-sram: only build for ARMv7
  memory: renesas-rpc-if: Make rpcif_enable/disable_rpm() as static inline
  memory: renesas-rpc-if: Fix a node reference leak in rpcif_probe()
  memory: renesas-rpc-if: Fix unbalanced pm_runtime_enable in rpcif_{enable,disable}_rpm
  memory: renesas-rpc-if: Return correct value to the caller of rpcif_manual_xfer()

Link: https://lore.kernel.org/r/20201207075758.5501-1-krzk@kernel.org
Signed-off-by: Arnd Bergmann

memory: jz4780_nemc: Fix potential NULL dereference in jz4780_nemc_probe()

2020-12-05T13:57:52+00:00

platform_get_resource() may fail and return NULL, so we should
better check it's return value to avoid a NULL pointer dereference
a bit later in the code.

This is detected by Coccinelle semantic patch.

Fixes: 911a88829725 ("memory: jz4780-nemc: driver for the NEMC on JZ4780 SoCs")
Signed-off-by: Zhang Changzhong 
Acked-by: Paul Cercueil 
Link: https://lore.kernel.org/r/1607070717-32880-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Krzysztof Kozlowski

memory: ti-emif-sram: only build for ARMv7

2020-12-05T13:57:17+00:00

The driver can be compile-tested on all ARM machines, but
causes a failure when built for ARMv7-M:

arm-linux-gnueabi-ld: error: drivers/memory/ti-emif-sram-pm.o: conflicting architecture profiles A/M

Limit the target machines to configurations that have ARMv7 enabled.

Fixes: ea0c0ad6b6eb ("memory: Enable compile testing for most of the drivers")
Signed-off-by: Arnd Bergmann 
Link: https://lore.kernel.org/r/20201203230832.1481767-1-arnd@kernel.org
Signed-off-by: Krzysztof Kozlowski

memory: tegra30: Support interconnect framework

2020-12-05T13:54:36+00:00

Now Internal and External memory controllers are memory interconnection
providers. This allows us to use interconnect API for tuning of memory
configuration. EMC driver now supports OPPs and DVFS. MC driver now
supports tuning of memory arbitration latency, which needs to be done
for ISO memory clients, like a Display client for example.

Signed-off-by: Dmitry Osipenko 
Tested-by: Peter Geis 
Acked-by: Georgi Djakov 
Acked-by: Thierry Reding 
Link: https://lore.kernel.org/r/20201203192439.16177-4-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: tegra20: Support hardware versioning and clean up OPP table initialization

2020-12-05T13:53:59+00:00

Support hardware versioning, which is now required for Tegra20 EMC OPP.
Clean up OPP table initialization by using a error code returned by OPP
API for judging about the OPP table presence in a device-tree and remove
OPP regulator initialization because we're now going to use power domain
instead of a raw regulator. This puts Tegra20 EMC OPP preparation on par
with the Tegra30/124 EMC drivers.

Signed-off-by: Dmitry Osipenko 
Acked-by: Thierry Reding 
Link: https://lore.kernel.org/r/20201203192439.16177-3-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski

memory: renesas-rpc-if: Make rpcif_enable/disable_rpm() as static inline

2020-11-28T11:37:18+00:00

Define rpcif_enable_rpm() and rpcif_disable_rpm() as static
inline in the header instead of exporting them.

Suggested-by: Pavel Machek 
Signed-off-by: Lad Prabhakar 
Reviewed-by: Pavel Machek (CIP) 
Link: https://lore.kernel.org/r/20201126191146.8753-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Krzysztof Kozlowski

memory: renesas-rpc-if: Fix a node reference leak in rpcif_probe()

2020-11-28T11:34:57+00:00

Release the node reference by calling of_node_put(flash) in the probe.

Fixes: ca7d8b980b67f ("memory: add Renesas RPC-IF driver")
Reported-by: Pavel Machek 
Signed-off-by: Lad Prabhakar 
Reviewed-by: Sergei Shtylyov 
Reviewed-by: Geert Uytterhoeven 
Reviewed-by: Pavel Machek (CIP) 
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20201126191146.8753-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Krzysztof Kozlowski