linux-stable.git/drivers/bus, branch v5.4.271

bus: moxtet: Add spi device table

2024-02-23T07:25:13+00:00

[ Upstream commit aaafe88d5500ba18b33be72458439367ef878788 ]

The moxtet module fails to auto-load on. Add a SPI id table to
allow it to do so.

Signed-off-by: Sjoerd Simons 
Cc:  
Reviewed-by: Marek Behún 
Signed-off-by: Gregory CLEMENT 
Signed-off-by: Sasha Levin

bus: ti-sysc: Fix SYSC_QUIRK_SWSUP_SIDLE_ACT handling for uart wake-up

2023-10-10T19:46:39+00:00

[ Upstream commit e5deb8f76e64d94ccef715e75ebafffd0c312d80 ]

The uarts should be tagged with SYSC_QUIRK_SWSUP_SIDLE instead of
SYSC_QUIRK_SWSUP_SIDLE_ACT. The difference is that SYSC_QUIRK_SWSUP_SIDLE
is used to force idle target modules rather than block idle during usage.

The SYSC_QUIRK_SWSUP_SIDLE_ACT should disable autoidle and wake-up when
a target module is active, and configure autoidle and wake-up when a
target module is inactive. We are missing configuring the target module
on sysc_disable_module(), and missing toggling of the wake-up bit.

Let's fix the issue to allow uart wake-up to work.

Fixes: fb685f1c190e ("bus: ti-sysc: Handle swsup idle mode quirks")
Tested-by: Dhruva Gole 
Tested-by: Kevin Hilman 
Signed-off-by: Tony Lindgren 
Signed-off-by: Sasha Levin

bus: ti-sysc: Configure uart quirks for k3 SoC

2023-09-23T09:00:04+00:00

[ Upstream commit 03a711d3cb83692733f865312f49e665c49de6de ]

Enable the uart quirks similar to the earlier SoCs. Let's assume we are
likely going to need a k3 specific quirk mask separate from the earlier
SoCs, so let's not start changing the revision register mask at this point.

Note that SYSC_QUIRK_LEGACY_IDLE will be needed until we can remove the
need for pm_runtime_irq_safe() from 8250_omap driver.

Reviewed-by: Nishanth Menon 
Signed-off-by: Tony Lindgren 
Signed-off-by: Sasha Levin

bus: ti-sysc: Flush posted write on enable before reset

2023-08-30T14:27:17+00:00

[ Upstream commit 34539b442b3bc7d5bf10164750302b60b91f18a7 ]

The am335x devices started producing boot errors for resetting musb module
in because of subtle timing changes:

Unhandled fault: external abort on non-linefetch (0x1008)
...
sysc_poll_reset_sysconfig from sysc_reset+0x109/0x12
sysc_reset from sysc_probe+0xa99/0xeb0
...

The fix is to flush posted write after enable before reset during
probe. Note that some devices also need to specify the delay after enable
with ti,sysc-delay-us, but this is not needed for musb on am335x based on
my tests.

Reported-by: kernelci.org bot 
Closes: https://storage.kernelci.org/next/master/next-20230614/arm/multi_v7_defconfig+CONFIG_THUMB2_KERNEL=y/gcc-10/lab-cip/baseline-beaglebone-black.html
Fixes: 596e7955692b ("bus: ti-sysc: Add support for software reset")
Signed-off-by: Tony Lindgren 
Signed-off-by: Sasha Levin

bus: ti-sysc: Improve reset to work with modules with no sysconfig

2023-08-30T14:27:17+00:00

[ Upstream commit ab4d309d8708035bd323b2e2446eb68cda5e61e5 ]

At least display susbsystem (DSS) has modules with no sysconfig registers
and rely on custom function for module reset handling. Let's make reset
work with that too.

Signed-off-by: Tony Lindgren 
Stable-dep-of: 34539b442b3b ("bus: ti-sysc: Flush posted write on enable before reset")
Signed-off-by: Sasha Levin

bus: imx-weim: fix branch condition evaluates to a garbage value

2023-04-05T09:16:42+00:00

[ Upstream commit 1adab2922c58e7ff4fa9f0b43695079402cce876 ]

If bus type is other than imx50_weim_devtype and have no child devices,
variable 'ret' in function weim_parse_dt() will not be initialized, but
will be used as branch condition and return value. Fix this by
initializing 'ret' with 0.

This was discovered with help of clang-analyzer, but the situation is
quite possible in real life.

Fixes: 52c47b63412b ("bus: imx-weim: improve error handling upon child probe-failure")
Signed-off-by: Ivan Bornyakov 
Cc: stable@vger.kernel.org
Reviewed-by: Fabio Estevam 
Signed-off-by: Shawn Guo 
Signed-off-by: Sasha Levin

bus: sunxi-rsb: Fix error handling in sunxi_rsb_init()

2023-02-22T11:50:23+00:00

[ Upstream commit f71eaf2708be7831428eacae7db25d8ec6b8b4c5 ]

The sunxi_rsb_init() returns the platform_driver_register() directly
without checking its return value, if platform_driver_register() failed,
the sunxi_rsb_bus is not unregistered.
Fix by unregister sunxi_rsb_bus when platform_driver_register() failed.

Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
Signed-off-by: Yuan Can 
Reviewed-by: Jernej Skrabec 
Link: https://lore.kernel.org/r/20221123094200.12036-1-yuancan@huawei.com
Signed-off-by: Jernej Skrabec 
Signed-off-by: Sasha Levin

bus: sunxi-rsb: Support atomic transfers

2022-12-08T10:22:57+00:00

[ Upstream commit 077686da0e2162c4ea5ae0df205849c2a7a84479 ]

When communicating with a PMIC during system poweroff (pm_power_off()),
IRQs are disabled and we are in a RCU read-side critical section, so we
cannot use wait_for_completion_io_timeout(). Instead, poll the status
register for transfer completion.

Fixes: d787dcdb9c8f ("bus: sunxi-rsb: Add driver for Allwinner Reduced Serial Bus")
Signed-off-by: Samuel Holland 
Reviewed-by: Jernej Skrabec 
Link: https://lore.kernel.org/r/20221114015749.28490-3-samuel@sholland.org
Signed-off-by: Jernej Skrabec 
Signed-off-by: Sasha Levin

bus: hisi_lpc: fix missing platform_device_put() in hisi_lpc_acpi_probe()

2022-08-25T09:17:35+00:00

[ Upstream commit 54872fea6a5ac967ec2272aea525d1438ac6735a ]

In error case in hisi_lpc_acpi_probe() after calling platform_device_add(),
hisi_lpc_acpi_remove() can't release the failed 'pdev', so it will be leak,
call platform_device_put() to fix this problem.
I'v constructed this error case and tested this patch on D05 board.

Fixes: 99c0228d6ff1 ("HISI LPC: Re-Add ACPI child enumeration support")
Reported-by: Hulk Robot 
Signed-off-by: Yang Yingliang 
Acked-by: John Garry 
Signed-off-by: Rafael J. Wysocki 
Signed-off-by: Sasha Levin

bus: ti-sysc: Fix warnings for unbind for serial

2022-06-14T16:11:54+00:00

[ Upstream commit c337125b8834f9719dfda0e40b25eaa266f1b8cf ]

We can get "failed to disable" clock_unprepare warnings on unbind at least
for the serial console device if the unbind is done before the device has
been idled.

As some devices are using deferred idle, we must check the status for
pending idle work to idle the device.

Fixes: 76f0f772e469 ("bus: ti-sysc: Improve handling for no-reset-on-init and no-idle-on-init")
Cc: Romain Naour 
Reviewed-by: Romain Naour 
Signed-off-by: Tony Lindgren 
Link: https://lore.kernel.org/r/20220512053021.61650-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin