linux.git/drivers/pmdomain/imx, branch for-next

pmdomain: imx8mp-blk-ctrl: add missing loop break condition

2025-01-16T15:10:32+00:00

Currently imx8mp_blk_ctrl_remove() will continue the for loop
until an out-of-bounds exception occurs.

pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : dev_pm_domain_detach+0x8/0x48
lr : imx8mp_blk_ctrl_shutdown+0x58/0x90
sp : ffffffc084f8bbf0
x29: ffffffc084f8bbf0 x28: ffffff80daf32ac0 x27: 0000000000000000
x26: ffffffc081658d78 x25: 0000000000000001 x24: ffffffc08201b028
x23: ffffff80d0db9490 x22: ffffffc082340a78 x21: 00000000000005b0
x20: ffffff80d19bc180 x19: 000000000000000a x18: ffffffffffffffff
x17: ffffffc080a39e08 x16: ffffffc080a39c98 x15: 4f435f464f006c72
x14: 0000000000000004 x13: ffffff80d0172110 x12: 0000000000000000
x11: ffffff80d0537740 x10: ffffff80d05376c0 x9 : ffffffc0808ed2d8
x8 : ffffffc084f8bab0 x7 : 0000000000000000 x6 : 0000000000000000
x5 : ffffff80d19b9420 x4 : fffffffe03466e60 x3 : 0000000080800077
x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 dev_pm_domain_detach+0x8/0x48
 platform_shutdown+0x2c/0x48
 device_shutdown+0x158/0x268
 kernel_restart_prepare+0x40/0x58
 kernel_kexec+0x58/0xe8
 __do_sys_reboot+0x198/0x258
 __arm64_sys_reboot+0x2c/0x40
 invoke_syscall+0x5c/0x138
 el0_svc_common.constprop.0+0x48/0xf0
 do_el0_svc+0x24/0x38
 el0_svc+0x38/0xc8
 el0t_64_sync_handler+0x120/0x130
 el0t_64_sync+0x190/0x198
Code: 8128c2d0 ffffffc0 aa1e03e9 d503201f

Fixes: 556f5cf9568a ("soc: imx: add i.MX8MP HSIO blk-ctrl")
Cc: stable@vger.kernel.org
Signed-off-by: Xiaolei Wang 
Reviewed-by: Lucas Stach 
Reviewed-by: Fabio Estevam 
Reviewed-by: Frank Li 
Link: https://lore.kernel.org/r/20250115014118.4086729-1-xiaolei.wang@windriver.com
Signed-off-by: Ulf Hansson

pmdomain: imx: gpcv2: fix an OF node reference leak in imx_gpcv2_probe()

2024-12-19T14:26:37+00:00

imx_gpcv2_probe() leaks an OF node reference obtained by
of_get_child_by_name(). Fix it by declaring the device node with the
__free(device_node) cleanup construct.

This bug was found by an experimental static analysis tool that I am
developing.

Fixes: 03aa12629fc4 ("soc: imx: Add GPCv2 power gating driver")
Signed-off-by: Joe Hattori 
Cc: stable@vger.kernel.org
Message-ID: <20241215030159.1526624-1-joe@pf.is.s.u-tokyo.ac.jp>
Signed-off-by: Ulf Hansson

Merge tag 'pmdomain-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm

2024-12-06T19:24:00+00:00

Pull pmdomain fixes from Ulf Hansson:
 "Core:
   - Fix a couple of memory-leaks during genpd init/remove

  Providers:
   - imx: Adjust delay for gpcv2 to fix power up handshake
   - mediatek: Fix DT bindings by adding another nested power-domain
     layer"

* tag 'pmdomain-v6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm:
  pmdomain: imx: gpcv2: Adjust delay after power up handshake
  pmdomain: core: Fix error path in pm_genpd_init() when ida alloc fails
  pmdomain: core: Add missing put_device()
  dt-bindings: power: mediatek: Add another nested power-domain layer

pmdomain: imx: gpcv2: Adjust delay after power up handshake

2024-12-02T16:09:26+00:00

The udelay(5) is not enough, sometimes below kernel panic
still be triggered:

[    4.012973] Kernel panic - not syncing: Asynchronous SError Interrupt
[    4.012976] CPU: 2 UID: 0 PID: 186 Comm: (udev-worker) Not tainted 6.12.0-rc2-0.0.0-devel-00004-g8b1b79e88956 #1
[    4.012982] Hardware name: Toradex Verdin iMX8M Plus WB on Dahlia Board (DT)
[    4.012985] Call trace:
[...]
[    4.013029]  arm64_serror_panic+0x64/0x70
[    4.013034]  do_serror+0x3c/0x70
[    4.013039]  el1h_64_error_handler+0x30/0x54
[    4.013046]  el1h_64_error+0x64/0x68
[    4.013050]  clk_imx8mp_audiomix_runtime_resume+0x38/0x48
[    4.013059]  __genpd_runtime_resume+0x30/0x80
[    4.013066]  genpd_runtime_resume+0x114/0x29c
[    4.013073]  __rpm_callback+0x48/0x1e0
[    4.013079]  rpm_callback+0x68/0x80
[    4.013084]  rpm_resume+0x3bc/0x6a0
[    4.013089]  __pm_runtime_resume+0x50/0x9c
[    4.013095]  pm_runtime_get_suppliers+0x60/0x8c
[    4.013101]  __driver_probe_device+0x4c/0x14c
[    4.013108]  driver_probe_device+0x3c/0x120
[    4.013114]  __driver_attach+0xc4/0x200
[    4.013119]  bus_for_each_dev+0x7c/0xe0
[    4.013125]  driver_attach+0x24/0x30
[    4.013130]  bus_add_driver+0x110/0x240
[    4.013135]  driver_register+0x68/0x124
[    4.013142]  __platform_driver_register+0x24/0x30
[    4.013149]  sdma_driver_init+0x20/0x1000 [imx_sdma]
[    4.013163]  do_one_initcall+0x60/0x1e0
[    4.013168]  do_init_module+0x5c/0x21c
[    4.013175]  load_module+0x1a98/0x205c
[    4.013181]  init_module_from_file+0x88/0xd4
[    4.013187]  __arm64_sys_finit_module+0x258/0x350
[    4.013194]  invoke_syscall.constprop.0+0x50/0xe0
[    4.013202]  do_el0_svc+0xa8/0xe0
[    4.013208]  el0_svc+0x3c/0x140
[    4.013215]  el0t_64_sync_handler+0x120/0x12c
[    4.013222]  el0t_64_sync+0x190/0x194
[    4.013228] SMP: stopping secondary CPUs

The correct way is to wait handshake, but it needs BUS clock of
BLK-CTL be enabled, which is in separate driver. So delay is the
only option here. The udelay(10) is a data got by experiment.

Fixes: e8dc41afca16 ("pmdomain: imx: gpcv2: Add delay after power up handshake")
Reported-by: Francesco Dolcini 
Closes: https://lore.kernel.org/lkml/20241007132555.GA53279@francesco-nb/
Signed-off-by: Shengjiu Wang 
Cc: stable@vger.kernel.org
Message-ID: <20241121075231.3910922-1-shengjiu.wang@nxp.com>
Signed-off-by: Ulf Hansson

Get rid of 'remove_new' relic from platform driver struct

2024-12-01T23:12:43+00:00

The continual trickle of small conversion patches is grating on me, and
is really not helping.  Just get rid of the 'remove_new' member
function, which is just an alias for the plain 'remove', and had a
comment to that effect:

  /*
   * .remove_new() is a relic from a prototype conversion of .remove().
   * New drivers are supposed to implement .remove(). Once all drivers are
   * converted to not use .remove_new any more, it will be dropped.
   */

This was just a tree-wide 'sed' script that replaced '.remove_new' with
'.remove', with some care taken to turn a subsequent tab into two tabs
to make things line up.

I did do some minimal manual whitespace adjustment for places that used
spaces to line things up.

Then I just removed the old (sic) .remove_new member function, and this
is the end result.  No more unnecessary conversion noise.

Signed-off-by: Linus Torvalds

pmdomain: imx: Use of_property_present() for non-boolean properties

2024-11-12T18:46:51+00:00

The use of of_property_read_bool() for non-boolean properties is
deprecated in favor of of_property_present() when testing for property
presence.

Signed-off-by: Rob Herring (Arm) 
Message-ID: <20241104190742.276710-1-robh@kernel.org>
Signed-off-by: Ulf Hansson

pmdomain: Merge branch fixes into next

2024-11-01T11:56:48+00:00

Merge the pmdomain fixes for v6.12-rc[n] into the next branch, to allow them
to get tested together with the new changes that are targeted for v6.13.

Signed-off-by: Ulf Hansson

pmdomain: imx93-blk-ctrl: correct remove path

2024-11-01T11:53:16+00:00

The check condition should be 'i < bc->onecell_data.num_domains', not
'bc->onecell_data.num_domains' which will make the look never finish
and cause kernel panic.

Also disable runtime to address
"imx93-blk-ctrl 4ac10000.system-controller: Unbalanced pm_runtime_enable!"

Fixes: e9aa77d413c9 ("soc: imx: add i.MX93 media blk ctrl driver")
Signed-off-by: Peng Fan 
Reviewed-by: Stefan Wahren 
Cc: stable@vger.kernel.org
Message-ID: <20241101101252.1448466-1-peng.fan@oss.nxp.com>
Signed-off-by: Ulf Hansson

pmdomain: imx: gpcv2: replace dev_err() with dev_err_probe()

2024-10-31T10:41:20+00:00

The patch standardizes the probe() code by replacing the two occurrences
of dev_err() with dev_err_probe(). Indeed, dev_err_probe() was used in all
other error paths of the probe() function.
Note that dev_err_probe() has advantages even if the error code is not
EPROBE_DEFER, such as the symbolic output of the error code. Therefore,
it should generally be preferred over dev_err().

Co-developed-by: Michael Trimarchi 
Signed-off-by: Michael Trimarchi 
Signed-off-by: Dario Binacchi 
Reviewed-by: Marco Felsch 
Message-ID: <20241025160430.4113467-1-dario.binacchi@amarulasolutions.com>
Signed-off-by: Ulf Hansson

pmdomain: imx93-pd: drop the context variable "init_off"

2024-09-13T10:45:40+00:00

This variable is only used within the probe() function, so let's remove
it from the context and define it locally within the same function.

Signed-off-by: Dario Binacchi 
Link: https://lore.kernel.org/r/20240825143428.556439-3-dario.binacchi@amarulasolutions.com
Signed-off-by: Ulf Hansson