linux-stable.git/arch/arm, branch v4.9.321

ARM: cns3xxx: Fix refcount leak in cns3xxx_init

2022-07-02T14:17:16+00:00

commit 1ba904b6b16e08de5aed7c1349838d9cd0d178c5 upstream.

of_find_compatible_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: 415f59142d9d ("ARM: cns3xxx: initial DT support")
Signed-off-by: Miaoqian Lin 
Acked-by: Krzysztof Halasa 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Greg Kroah-Hartman

ARM: Fix refcount leak in axxia_boot_secondary

2022-07-02T14:17:15+00:00

commit 7c7ff68daa93d8c4cdea482da4f2429c0398fcde upstream.

of_find_compatible_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when done.
Add missing of_node_put() to avoid refcount leak.

Fixes: 1d22924e1c4e ("ARM: Add platform support for LSI AXM55xx SoC")
Signed-off-by: Miaoqian Lin 
Link: https://lore.kernel.org/r/20220601090548.47616-1-linmq006@gmail.com'
Signed-off-by: Arnd Bergmann 
Signed-off-by: Greg Kroah-Hartman

ARM: exynos: Fix refcount leak in exynos_map_pmu

2022-07-02T14:17:15+00:00

commit c4c79525042a4a7df96b73477feaf232fe44ae81 upstream.

of_find_matching_node() returns a node pointer with refcount
incremented, we should use of_node_put() on it when not need anymore.
Add missing of_node_put() to avoid refcount leak.
of_node_put() checks null pointer.

Fixes: fce9e5bb2526 ("ARM: EXYNOS: Add support for mapping PMU base address via DT")
Signed-off-by: Miaoqian Lin 
Link: https://lore.kernel.org/r/20220523145513.12341-1-linmq006@gmail.com
Signed-off-by: Krzysztof Kozlowski 
Signed-off-by: Greg Kroah-Hartman

ARM: dts: imx6qdl: correct PU regulator ramp delay

2022-07-02T14:17:15+00:00

commit 93a8ba2a619816d631bd69e9ce2172b4d7a481b8 upstream.

Contrary to what was believed at the time, the ramp delay of 150us is not
plenty for the PU LDO with the default step time of 512 pulses of the 24MHz
clock. Measurements have shown that after enabling the LDO the voltage on
VDDPU_CAP jumps to ~750mV in the first step and after that the regulator
executes the normal ramp up as defined by the step size control.

This means it takes the regulator between 360us and 370us to ramp up to
the nominal 1.15V voltage for this power domain. With the old setting of
the ramp delay the power up of the PU GPC domain would happen in the middle
of the regulator ramp with the voltage being at around 900mV. Apparently
this was enough for most units to properly power up the peripherals in the
domain and execute the reset. Some units however, fail to power up properly,
especially when the chip is at a low temperature. In that case any access
to the GPU registers would yield an incorrect result with no way to recover
from this situation.

Change the ramp delay to 380us to cover the measured ramp up time with a
bit of additional slack.

Fixes: 40130d327f72 ("ARM: dts: imx6qdl: Allow disabling the PU regulator, add a enable ramp delay")
Signed-off-by: Lucas Stach 
Signed-off-by: Shawn Guo 
Signed-off-by: Greg Kroah-Hartman

arm: use fallback for random_get_entropy() instead of zero

2022-06-25T09:45:13+00:00

commit ff8a8f59c99f6a7c656387addc4d9f2247d75077 upstream.

In the event that random_get_entropy() can't access a cycle counter or
similar, falling back to returning 0 is really not the best we can do.
Instead, at least calling random_get_entropy_fallback() would be
preferable, because that always needs to return _something_, even
falling back to jiffies eventually. It's not as though
random_get_entropy_fallback() is super high precision or guaranteed to
be entropic, but basically anything that's not zero all the time is
better than returning zero all the time.

Cc: Thomas Gleixner 
Cc: Arnd Bergmann 
Reviewed-by: Russell King (Oracle) 
Signed-off-by: Jason A. Donenfeld 
Signed-off-by: Greg Kroah-Hartman

ARM: hisi: Add missing of_node_put after of_find_compatible_node

2022-06-14T14:52:30+00:00

[ Upstream commit 9bc72e47d4630d58a840a66a869c56b29554cfe4 ]

of_find_compatible_node  will increment the refcount of the returned
device_node. Calling of_node_put() to avoid the refcount leak

Signed-off-by: Peng Wu 
Signed-off-by: Wei Xu 
Signed-off-by: Sasha Levin

ARM: dts: exynos: add atmel,24c128 fallback to Samsung EEPROM

2022-06-14T14:52:30+00:00

[ Upstream commit f038e8186fbc5723d7d38c6fa1d342945107347e ]

The Samsung s524ad0xd1 EEPROM should use atmel,24c128 fallback,
according to the AT24 EEPROM bindings.

Reported-by: Rob Herring 
Signed-off-by: Krzysztof Kozlowski 
Link: https://lore.kernel.org/r/20220426183443.243113-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Sasha Levin

ARM: versatile: Add missing of_node_put in dcscb_init

2022-06-14T14:52:30+00:00

[ Upstream commit 23b44f9c649bbef10b45fa33080cd8b4166800ae ]

The device_node pointer is returned by of_find_compatible_node
with refcount incremented. We should use of_node_put() to avoid
the refcount leak.

Signed-off-by: Peng Wu 
Signed-off-by: Linus Walleij 
Link: https://lore.kernel.org/r/20220428230356.69418-1-linus.walleij@linaro.org'
Signed-off-by: Arnd Bergmann 
Signed-off-by: Sasha Levin

ARM: OMAP1: clock: Fix UART rate reporting algorithm

2022-06-14T14:52:30+00:00

[ Upstream commit 338d5d476cde853dfd97378d20496baabc2ce3c0 ]

Since its introduction to the mainline kernel, omap1_uart_recalc() helper
makes incorrect use of clk->enable_bit as a ready to use bitmap mask while
it only provides the bit number.  Fix it.

Signed-off-by: Janusz Krzysztofik 
Acked-by: Tony Lindgren 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Sasha Levin

ARM: 9197/1: spectre-bhb: fix loop8 sequence for Thumb2

2022-05-25T06:39:50+00:00

[ Upstream commit 3cfb3019979666bdf33a1010147363cf05e0f17b ]

In Thumb2, 'b . + 4' produces a branch instruction that uses a narrow
encoding, and so it does not jump to the following instruction as
expected. So use W(b) instead.

Fixes: 6c7cb60bff7a ("ARM: fix Thumb2 regression with Spectre BHB")
Signed-off-by: Ard Biesheuvel 
Signed-off-by: Russell King (Oracle) 
Signed-off-by: Sasha Levin