linux-stable.git/drivers/bus, branch v5.10.7

bus: fsl-mc: fix error return code in fsl_mc_object_allocate()

2020-12-30T10:53:46+00:00

[ Upstream commit 3d70fb03711c37bc64e8e9aea5830f498835f6bf ]

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: 197f4d6a4a00 ("staging: fsl-mc: fsl-mc object allocator driver")
Reported-by: Hulk Robot 
Acked-by: Laurentiu Tudor 
Signed-off-by: Zhang Changzhong 
Link: https://lore.kernel.org/r/1607068967-31991-1-git-send-email-zhangchangzhong@huawei.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

bus: fsl-mc: add back accidentally dropped error check

2020-12-30T10:53:45+00:00

[ Upstream commit 61243c03dde238170001093a29716c2369e8358f ]

A previous patch accidentally dropped an error check, so add it back.

Fixes: aef85b56c3c1 ("bus: fsl-mc: MC control registers are not always available")
Signed-off-by: Laurentiu Tudor 
Link: https://lore.kernel.org/r/20201105153050.19662-1-laurentiu.tudor@nxp.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

mips: cdmm: fix use-after-free in mips_cdmm_bus_discover

2020-12-30T10:53:24+00:00

[ Upstream commit f0e82242b16826077a2775eacfe201d803bb7a22 ]

kfree(dev) has been called inside put_device so anther
kfree would cause a use-after-free bug/

Fixes: 8286ae03308c ("MIPS: Add CDMM bus support")
Reported-by: Hulk Robot 
Signed-off-by: Qinglang Miao 
Acked-by: Serge Semin 
Signed-off-by: Thomas Bogendoerfer 
Signed-off-by: Sasha Levin

bus: mhi: core: Fix null pointer access when parsing MHI configuration

2020-12-30T10:53:15+00:00

[ Upstream commit f4d0b39c842585c74bce8f8a80553369181b72df ]

Functions parse_ev_cfg() and parse_ch_cfg() access mhi_cntrl->mhi_dev
before it is set in function mhi_register_controller(),
use cntrl_dev instead of mhi_dev.

Fixes: 0cbf260820fa ("bus: mhi: core: Add support for registering MHI controllers")
Signed-off-by: Carl Yin 
Reviewed-by: Bhaumik Bhatt 
Reviewed-by: Hemant Kumar 
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Manivannan Sadhasivam 
Signed-off-by: Sasha Levin

bus: mhi: core: Remove double locking from mhi_driver_remove()

2020-12-30T10:53:15+00:00

[ Upstream commit 9b627c25e70816a5e1dca940444b5029065b4d60 ]

There is double acquisition of the pm_lock from mhi_driver_remove()
function. Remove the read_lock_bh/read_unlock_bh calls for pm_lock
taken during a call to mhi_device_put() as the lock is acquired
within the function already. This will help avoid a potential
kernel panic.

Fixes: 189ff97cca53 ("bus: mhi: core: Add support for data transfer")
Reported-by: Shuah Khan 
Signed-off-by: Bhaumik Bhatt 
Reviewed-by: Manivannan Sadhasivam 
Signed-off-by: Manivannan Sadhasivam 
Signed-off-by: Sasha Levin

bus: ti-sysc: suppress err msg for timers used as clockevent/source

2020-11-19T09:05:48+00:00

GP Timers used as clockevent/source are not available for ti-sysc bus and
handled by Kernel timekeeping core. Now ti-sysc produces error message
every time such timer is detected:

 "ti-sysc: probe of 48040000.target-module failed with error -16"

Such messages are not necessary, so suppress them by returning -ENXIO
instead of -EBUSY.

Fixes: 6cfcd5563b4f ("clocksource/drivers/timer-ti-dm: Fix suspend and resume for am3 and am4")
Signed-off-by: Grygorii Strashko 
Signed-off-by: Tony Lindgren

bus: ti-sysc: Fix bogus resetdone warning on enable for cpsw

2020-10-26T08:08:53+00:00

Bail out early from sysc_wait_softreset() just like we do in sysc_reset()
if there's no sysstatus srst_shift to fix a bogus resetdone warning on
enable as suggested by Grygorii Strashko .

We do not currently handle resets for modules that need writing to the
sysstatus register. If we at some point add that, we also need to add
SYSS_QUIRK_RESETDONE_INVERTED flag for cpsw as the sysstatus bit is low
when reset is done as described in the am335x TRM "Table 14-202
SOFT_RESET Register Field Descriptions"

Fixes: d46f9fbec719 ("bus: ti-sysc: Use optional clocks on for enable and wait for softreset bit")
Suggested-by: Grygorii Strashko 
Acked-by: Grygorii Strashko 
Signed-off-by: Tony Lindgren

bus: ti-sysc: Fix reset status check for modules with quirks

2020-10-26T08:08:51+00:00

Commit d46f9fbec719 ("bus: ti-sysc: Use optional clocks on for enable and
wait for softreset bit") started showing a "OCP softreset timed out"
warning on enable if the interconnect target module is not out of reset.
This caused the warning to be often triggered for i2c and hdq while the
devices are working properly.

Turns out that some interconnect target modules seem to have an unusable
reset status bits unless the module specific reset quirks are activated.

Let's just skip the reset status check for those modules as we only want
to activate the reset quirks when doing a reset, and not on enable. This
way we don't see the bogus "OCP softreset timed out" warnings during boot.

Fixes: d46f9fbec719 ("bus: ti-sysc: Use optional clocks on for enable and wait for softreset bit")
Signed-off-by: Tony Lindgren

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

2020-10-24T17:39:22+00:00

Pull ARM SoC-related driver updates from Olof Johansson:
 "Various driver updates for platforms. A bulk of this is smaller fixes
  or cleanups, but some of the new material this time around is:

   - Support for Nvidia Tegra234 SoC

   - Ring accelerator support for TI AM65x

   - PRUSS driver for TI platforms

   - Renesas support for R-Car V3U SoC

   - Reset support for Cortex-M4 processor on i.MX8MQ

  There are also new socinfo entries for a handful of different SoCs and
  platforms"

* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (131 commits)
  drm/mediatek: reduce clear event
  soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api
  soc: mediatek: cmdq: add jump function
  soc: mediatek: cmdq: add write_s_mask value function
  soc: mediatek: cmdq: add write_s value function
  soc: mediatek: cmdq: add read_s function
  soc: mediatek: cmdq: add write_s_mask function
  soc: mediatek: cmdq: add write_s function
  soc: mediatek: cmdq: add address shift in jump
  soc: mediatek: mtk-infracfg: Fix kerneldoc
  soc: amlogic: pm-domains: use always-on flag
  reset: sti: reset-syscfg: fix struct description warnings
  reset: imx7: add the cm4 reset for i.MX8MQ
  dt-bindings: reset: imx8mq: add m4 reset
  reset: Fix and extend kerneldoc
  reset: reset-zynqmp: Added support for Versal platform
  dt-bindings: reset: Updated binding for Versal reset driver
  reset: imx7: Support module build
  soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk
  soc: fsl: qman: convert to use be32_add_cpu()
  ...

Merge tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2020-10-15T17:01:51+00:00

Pull char/misc driver updates from Greg KH:
 "Here is the big set of char, misc, and other assorted driver subsystem
  patches for 5.10-rc1.

  There's a lot of different things in here, all over the drivers/
  directory. Some summaries:

   - soundwire driver updates

   - habanalabs driver updates

   - extcon driver updates

   - nitro_enclaves new driver

   - fsl-mc driver and core updates

   - mhi core and bus updates

   - nvmem driver updates

   - eeprom driver updates

   - binder driver updates and fixes

   - vbox minor bugfixes

   - fsi driver updates

   - w1 driver updates

   - coresight driver updates

   - interconnect driver updates

   - misc driver updates

   - other minor driver updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'char-misc-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (396 commits)
  binder: fix UAF when releasing todo list
  docs: w1: w1_therm: Fix broken xref, mistakes, clarify text
  misc: Kconfig: fix a HISI_HIKEY_USB dependency
  LSM: Fix type of id parameter in kernel_post_load_data prototype
  misc: Kconfig: add a new dependency for HISI_HIKEY_USB
  firmware_loader: fix a kernel-doc markup
  w1: w1_therm: make w1_poll_completion static
  binder: simplify the return expression of binder_mmap
  test_firmware: Test partial read support
  firmware: Add request_partial_firmware_into_buf()
  firmware: Store opt_flags in fw_priv
  fs/kernel_file_read: Add "offset" arg for partial reads
  IMA: Add support for file reads without contents
  LSM: Add "contents" flag to kernel_read_file hook
  module: Call security_kernel_post_load_data()
  firmware_loader: Use security_post_load_data()
  LSM: Introduce kernel_post_load_data() hook
  fs/kernel_read_file: Add file_size output argument
  fs/kernel_read_file: Switch buffer size arg to size_t
  fs/kernel_read_file: Remove redundant size argument
  ...