'for_each_child_of_node' performs an of_node_get on each iteration, so a
return from the middle of the loop requires an of_node_put.
Fixes: e888d445ac ("nvmem: resolve cells from DT at registration time")
Cc: <stable@vger.kernel.org>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210611102321.11509-1-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Added enum and string for FRAM (ferroelectric RAM) to expose it as file
named "fram".
Added documentation of sysfs file.
Signed-off-by: Jiri Prchal <jiri.prchal@aksignal.cz>
Link: https://lore.kernel.org/r/20210611094601.95131-2-jiri.prchal@aksignal.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In review feedback Joe Perches found the existing comment
confusing. Let's use something based on the wording proposed by Joe.
Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210611083348.20170-10-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The caller doesn't modify the memory pointed to by the pointer so it
can be const.
Suggested-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210611083348.20170-9-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix a missed newline, change an 'if' to 'else if' and update
a comment which is stale after the merge of '5a1bea2a: nvmem:
qfprom: Add support for fuseblowing on sc7280'
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210611083348.20170-8-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This device currently reports an "Unknown" type in sysfs.
Since it is an eFuse hardware device, set its type to OTP.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20210611083348.20170-7-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Bug fixes for the OCC, SCOM and SBEFIFO drivers
- Performance fix for aspeed fsi master
- Small fixes from the mailing lists
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Merge tag 'fsi-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi into char-misc-next
Joel writes:
FSI changes for v5.14
- Bug fixes for the OCC, SCOM and SBEFIFO drivers
- Performance fix for aspeed fsi master
- Small fixes from the mailing lists
* tag 'fsi-for-v5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi:
fsi/sbefifo: Fix reset timeout
fsi/sbefifo: Clean up correct FIFO when receiving reset request from SBE
fsi: master-ast-cf: Remove redundant error printing in fsi_master_acf_probe()
fsi: Aspeed: Reduce poll timeout
fsi: aspeed: convert to devm_platform_ioremap_resource
hwmon: (occ) Print response status in first poll error message
hwmon: (occ) Start sequence number at one
fsi: occ: Log error for checksum failure
fsi: occ: Don't accept response from un-initialized OCC
fsi: scom: Remove retries
fsi: scom: Reset the FSI2PIB engine for any error
fsi: aspeed: Emit fewer barriers in opb operations
fsi: core: Fix return of error values on failures
fsi: Add missing MODULE_DEVICE_TABLE
When iterating over child firmware nodes restore printing the name of ones
that are not supported.
While at it, refactor loop body to clearly show that we stop at the first match.
Fixes: db15d73e5f ("eeprom: idt_89hpesx: Support both ACPI and OF probing")
Cc: Huy Duong <qhuyduong@hotmail.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210607221757.81465-2-andy.shevchenko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
device_get_next_child_node() bumps a reference counting of a returned variable.
We have to balance it whenever we return to the caller.
Fixes: db15d73e5f ("eeprom: idt_89hpesx: Support both ACPI and OF probing")
Cc: Huy Duong <qhuyduong@hotmail.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210607221757.81465-1-andy.shevchenko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Using list_move_tail() instead of list_del() + list_add_tail() in bcm_vk_msg.c.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Baokun Li <libaokun1@huawei.com>
Link: https://lore.kernel.org/r/20210609071430.1337400-1-libaokun1@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The variable err is being assigned a value that is never read, the
assignment is redundant and can be removed. Also remove some empty
lines.
Reviewed-by: Oded Gabbay <ogabbay@kernel.org>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Addresses-Coverity: ("Unused value")
Link: https://lore.kernel.org/r/20210603131210.84763-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
'pvpanic_remove()' is referenced only by a 'devm_add_action_or_reset()'
call in 'devm_pvpanic_probe()'. So, we know that its parameter is non-NULL.
Axe the unneeded check to save a few lines of code.
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/8e425618f4042a8ab8366be4d34026972e77bd40.1622911768.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use DEVICE_ATTR_RO() helper macro instead of DEVICE_ATTR(), which makes
the code a bit shorter and easier to read.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210603090506.11771-1-thunder.leizhen@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Starting from iLO ASIC 'Neches' with subsystem device id 0x00E4,
bar 5 is used for shared memory region mapping instead of bar 2
because bar 2 is made inaccessible after system POST for security
reason.
As this holds true for future iLO ASIC generations, it does not
make sense to map shared memory region according to the subsystem
device id of each following generations.
Map iLO shared memory region with PCI revision id that maps to the
iLO ASIC generation, starting from Neches (Rev 7).
Signed-off-by: Matt Hsiao <matt.hsiao@hpe.com>
Link: https://lore.kernel.org/r/20210531085551.26421-1-matt.hsiao@hpe.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Commit 1366a3db3d ("staging: unisys: visorbus: visorchipset_init clean
up gotos") assigns the initial value -ENODEV to the local variable 'err',
and the first several error branches will return this value after "goto
error". But commit f1f537c2e7 ("staging: unisys: visorbus: Consolidate
controlvm channel creation.") overwrites 'err' in the middle of the way.
As a result, some error branches do not successfully return the initial
value -ENODEV of 'err', but return 0.
In addition, when kzalloc() fails, -ENOMEM should be returned instead of
-ENODEV.
Fixes: f1f537c2e7 ("staging: unisys: visorbus: Consolidate controlvm channel creation.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://lore.kernel.org/r/20210528082614.9337-1-thunder.leizhen@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
On BMCs with lower timer resolution than 1ms, msleep(1) will take
way longer than 1ms, so looping 10k times won't wait for 10s but
significantly longer.
Fix this by using jiffies like the rest of the code.
Fixes: 9f4a8a2d7f ("fsi/sbefifo: Add driver for the SBE FIFO")
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Link: https://lore.kernel.org/r/20200724071518.430515-3-joel@jms.id.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
When the SBE requests a reset via the down FIFO, that is also the
FIFO we should go and reset ;)
Fixes: 9f4a8a2d7f ("fsi/sbefifo: Add driver for the SBE FIFO")
Signed-off-by: Joachim Fenkes <FENKES@de.ibm.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20200724071518.430515-2-joel@jms.id.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
When devm_ioremap_resource() fails, a clear enough error message will be
printed by its subfunction __devm_ioremap_resource(). The error
information contains the device name, failure cause, and possibly resource
information.
Therefore, remove the error printing here to simplify code and reduce the
binary size.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Link: https://patchwork.ozlabs.org/project/linux-fsi/patch/20210511085745.4340-1-thunder.leizhen@huawei.com/
Signed-off-by: Joel Stanley <joel@jms.id.au>
The lengthy timeout previously used sometimes resulted in
scheduling problems, detailed below. Therefore reduce the timeout
to 500us. This timeout selection is supported by the benchmarks
collected below with various clock dividers. This is purely the time
spent polling (reported by ktime_get()).
div 1: max:150us avg: 2us
div 2: max:155us avg: 3us
div 4: max:149us avg: 7us
div 8: max:153us avg: 13us
div 16: max:197us avg: 21us
div 32: max:181us avg: 50us
div 64: max:262us avg:100us
Jan 22 01:27:21 rain27bmc kernel: rcu: INFO: rcu_sched self-detected stall on CPU
Jan 22 01:27:21 rain27bmc kernel: rcu: 0-....: (2099 ticks this GP) idle=0ca/1/0x40000002 softirq=349573/349573 fqs=1048
Jan 22 01:27:21 rain27bmc kernel: (t=2100 jiffies g=841149 q=7163)
Jan 22 01:27:21 rain27bmc kernel: NMI backtrace for cpu 0
Jan 22 01:27:21 rain27bmc kernel: CPU: 0 PID: 5959 Comm: ibm-read-vpd Not tainted 5.8.17-a9b4ea8 #1
Jan 22 01:27:21 rain27bmc kernel: Hardware name: Generic DT based system
Jan 22 01:27:21 rain27bmc kernel: Backtrace:
Jan 22 01:27:25 rain27bmc kernel: [<8010d92c>] (dump_backtrace) from [<8010db80>] (show_stack+0x20/0x24)
...
Jan 22 01:27:25 rain27bmc kernel: [<8010130c>] (gic_handle_irq) from [<80100b0c>] (__irq_svc+0x6c/0x90)
Jan 22 01:27:25 rain27bmc kernel: Exception stack(0xb79159b0 to 0xb79159f8)
Jan 22 01:27:25 rain27bmc kernel: 59a0: 9e88e5d5 00000559 00000559 00000018
Jan 22 01:27:25 rain27bmc kernel: 59c0: 00000000 9f217c55 00000003 00000559 a0201c00 bfa4d048 bfa4d000 b7915a44
Jan 22 01:27:25 rain27bmc kernel: 59e0: 40e88f8a b7915a00 3254e553 80734924 80030113 ffffffff
Jan 22 01:27:25 rain27bmc kernel: r9:b7914000 r8:a0201c00 r7:b79159e4 r6:ffffffff r5:80030113 r4:80734924
Jan 22 01:27:25 rain27bmc kernel: [<807348b4>] (__opb_read) from [<80734d98>] (aspeed_master_read+0xbc/0xcc)
Jan 22 01:27:25 rain27bmc kernel: r10:00000004 r9:00000002 r8:80734cdc r7:bd33fa40 r6:00000004 r5:bd33f840
Jan 22 01:27:25 rain27bmc kernel: r4:00201c00
Jan 22 01:27:25 rain27bmc kernel: [<80734cdc>] (aspeed_master_read) from [<807320f0>] (fsi_master_read+0x6c/0x1bc)
...
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210211194846.35475-1-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
In order to better debug problems starting up the driver, print
the response status from the OCC in the error logged when the first
poll command fails.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210209171235.20624-5-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
Initialize the sequence number at one, rather than zero, in order
to prevent false matches with the zero-initialized OCC SRAM
buffer before the OCC is fully initialized.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210209171235.20624-4-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
Log an error if the response checksum doesn't match the
calculated checksum.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210209171235.20624-3-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
If the OCC is not initialized and responds as such, the driver
should continue waiting for a valid response until the timeout
expires.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Fixes: 7ed98dddb7 ("fsi: Add On-Chip Controller (OCC) driver")
Link: https://lore.kernel.org/r/20210209171235.20624-2-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
On a functioning FSI link there is not need to retry a write when doing
a scom in the driver.
Allow the higher layers (eg. userspace) to attempt a retry if they want,
or to accept that the address they are talking to is not accessible.
By removing the retries we can separate the error handling from retry
logic. In particular -EBUSY was used to force the get/put scom logic to
retry.
Signed-off-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210527070109.225198-1-joel@jms.id.au
Signed-off-by: Joel Stanley <joel@jms.id.au>
The error bits in the FSI2PIB status are only cleared by a reset. So
the driver needs to perform a reset after seeing any of the FSI2PIB
errors, otherwise subsequent operations will also look like failures.
Fixes: 6b293258cd ("fsi: scom: Major overhaul")
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/20210329151344.14246-1-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
Currently the cfam_read and cfam_write functions return the provided
number of bytes given in the count parameter and not the error return
code in variable rc, hence all failures of read/writes are being
silently ignored. Fix this by returning the error code in rc.
Addresses-Coverity: ("Unused value")
Fixes: d1dcd67825 ("fsi: Add cfam char devices")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Jeremy Kerr <jk@ozlabs.org>
Link: https://lore.kernel.org/r/20210603122812.83587-1-colin.king@canonical.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
This patch adds missing MODULE_DEVICE_TABLE definition which generates
correct modalias for automatic loading of this driver when it is built
as an external module.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Link: https://lore.kernel.org/r/1620896249-52769-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
There is a spelling mistake in a dev_err message. Fix it.
Acked-by: Eli Billauer <eli.billauer@gmail.com>
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210601102201.8489-1-colin.king@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
MODULE_VERSION is useless for in-kernel drivers, so these are removed from
files in drivers/char/xillybus/
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Link: https://lore.kernel.org/r/20210528092242.51104-2-eli.billauer@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
As Xillybus' configuration symbol hierarchy has been reorganized recently,
the correct condition for compiling the xillybus/ subdirectory is now
CONFIG_XILLYBUS_CLASS, and not CONFIG_XILLYBUS.
Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Eli Billauer <eli.billauer@gmail.com>
Link: https://lore.kernel.org/r/20210528092242.51104-1-eli.billauer@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pull i2c fixes from Wolfram Sang:
"This is a bit larger than usual at rc4 time. The reason is due to
Lee's work of fixing newly reported build warnings.
The rest is fixes as usual"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (22 commits)
MAINTAINERS: adjust to removing i2c designware platform data
i2c: s3c2410: fix possible NULL pointer deref on read message after write
i2c: mediatek: Disable i2c start_en and clear intr_stat brfore reset
i2c: i801: Don't generate an interrupt on bus reset
i2c: mpc: implement erratum A-004447 workaround
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P1010 i2c controllers
powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers
dt-bindings: i2c: mpc: Add fsl,i2c-erratum-a004447 flag
i2c: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
i2c: busses: i2c-st: Fix copy/paste function misnaming issues
i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
i2c: busses: i2c-ocores: Place the expected function names into the documentation headers
i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
i2c: busses: i2c-cadence: Fix incorrectly documented 'enum cdns_i2c_slave_mode'
i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers
i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
i2c: sh_mobile: Use new clock calculation formulas for RZ/G2E
i2c: I2C_HISI should depend on ACPI
...
- Fix addfd notification race condition (Sargun Dhillon)
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Merge tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp fixes from Kees Cook:
"This fixes a hard-to-hit race condition in the addfd user_notif
feature of seccomp, visible since v5.9.
And a small documentation fix"
* tag 'seccomp-fixes-v5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: Refactor notification handler to prepare for new semantics
Documentation: seccomp: Fix user notification documentation
I have a handful of RISC-V related fixes:
* A fix to avoid errors when the stack tracing code is tracing itself.
* A fix to resurrect the memtest= kernel command line argument on
RISC-V, which was briefly enabled during the merge window before a
refactoring disabled it.
* A build fix and some warning cleanups.
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Merge tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
"A handful of RISC-V related fixes:
- avoid errors when the stack tracing code is tracing itself.
- resurrect the memtest= kernel command line argument on RISC-V,
which was briefly enabled during the merge window before a
refactoring disabled it.
- build fix and some warning cleanups"
* tag 'riscv-for-linus-5.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: kexec: Fix W=1 build warnings
riscv: kprobes: Fix build error when MMU=n
riscv: Select ARCH_USE_MEMTEST
riscv: stacktrace: fix the riscv stacktrace when CONFIG_FRAME_POINTER enabled
