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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD fixes from Lee Jones:
- fix double free
- handle devicetree disabled devices gracefully
* tag 'mfd-fixes-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
mfd: mfd-core: Ensure disabled devices are ignored without error
mfd: core: Fix double-free in mfd_remove_devices_fn()
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Commit e49aa9a9bd22 ("mfd: core: Make a best effort attempt to match
devices with the correct of_nodes") changed the semantics for disabled
devices in mfd_add_device(). Instead of silently ignoring a disabled
child device, an error was returned. On receipt of the error
mfd_add_devices() the precedes to remove *all* child devices and
returns an all-failed error to the caller, which will inevitably fail
the parent device as well.
This patch reverts back to the old semantics and ignores child devices
which are disabled in Device Tree.
Fixes: e49aa9a9bd22 ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes")
Reported-by: Icenowy Zheng <icenowy@aosc.io>
Tested-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The pdev.mfd_cell is released by platform_device_release(), which is
invoked by platform_device_unregister(). Hence mfd_remove_devices_fn()
shouldn't release the cell variable. The double-free bug is reported KASAN
during of MFD driver module removal.
Fixes: 466a62d7642f ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes")
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.
[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
Pull MFD updates from Lee Jones:
"Core Frameworks
- Make better attempt at matching device with the correct OF node
- Allow batch removal of hierarchical sub-devices
New Drivers
- Add STM32 Clocksource driver
- Add support for Khadas System Control Microcontroller
Driver Removal
- Remove unused driver for TI's SMSC ECE1099
New Device Support
- Add support for Intel Emmitsburg PCH to Intel LPSS PCI
- Add support for Intel Tiger Lake PCH-H to Intel LPSS PCI
- Add support for Dialog DA revision to Dialog DA9063
New Functionality
- Add support for AXP803 to be probed by I2C
Fix-ups
- Numerous W=1 warning fixes
- Device Tree changes (stm32-lptimer, gateworks-gsc, khadas,mcu, stmfx, cros-ec, j721e-system-controller)
- Enabled Regmap 'fast I/O' in stm32-lptimer
- Change BUG_ON to WARN_ON in arizona-core
- Remove superfluous code/initialisation (madera, max14577)
- Trivial formatting/spelling issues (madera-core, madera-i2c, da9055, max77693-private)
- Switch to of_platform_populate() in sprd-sc27xx-spi
- Expand out set/get brightness/pwm macros in lm3533-ctrlbank
- Disable IRQs on suspend in motorola-cpcap
- Clean-up error handling in intel_soc_pmic_mrfld
- Ensure correct removal order of sub-devices in madera
- Many s/HTTP/HTTPS/ link changes
- Ensure name used with Regmap is unique in syscon
Bug Fixes
- Properly 'put' clock on unbind and error in arizona-core
- Fix revision handling in da9063
- Fix 'assignment of read-only location' error in kempld-core
- Avoid using the Regmap API when atomic in rn5t618
- Redefine volatile register description in rn5t618
- Use locking to protect event handler in dln2"
* tag 'mfd-next-5.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (76 commits)
mfd: syscon: Use a unique name with regmap_config
mfd: Replace HTTP links with HTTPS ones
mfd: dln2: Run event handler loop under spinlock
mfd: madera: Improve handling of regulator unbinding
mfd: mfd-core: Add mechanism for removal of a subset of children
mfd: intel_soc_pmic_mrfld: Simplify the return expression of intel_scu_ipc_dev_iowrite8()
mfd: max14577: Remove redundant initialization of variable current_bits
mfd: rn5t618: Fix caching of battery related registers
mfd: max77693-private: Drop a duplicated word
mfd: da9055: pdata.h: Drop a duplicated word
mfd: rn5t618: Make restart handler atomic safe
mfd: kempld-core: Fix 'assignment of read-only location' error
mfd: axp20x: Allow the AXP803 to be probed by I2C
mfd: da9063: Add support for latest DA silicon revision
mfd: da9063: Fix revision handling to correctly select reg tables
dt-bindings: mfd: st,stmfx: Remove I2C unit name
dt-bindings: mfd: ti,j721e-system-controller.yaml: Add J721e system controller
mfd: motorola-cpcap: Disable interrupt for suspend
mfd: smsc-ece1099: Remove driver
mfd: core: Add OF_MFD_CELL_REG() helper
...
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The DT node full name is currently being used in regmap_config
which in turn is used to create the regmap debugfs directories.
This name however is not guaranteed to be unique and the regmap
debugfs registration can fail in the cases where the syscon nodes
have the same unit-address but are present in different DT node
hierarchies. Replace this logic using the syscon reg resource
address instead (inspired from logic used while creating platform
devices) to ensure a unique name is given for each syscon.
Signed-off-by: Suman Anna <s-anna@ti.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.
Deterministic algorithm:
For each file:
If not .svg:
For each line:
If doesn't contain `\bxmlns\b`:
For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
If both the HTTP and HTTPS versions
return 200 OK and serve the same content:
Replace HTTP with HTTPS.
Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The event handler loop must be run with interrupts disabled.
Otherwise we will have a warning:
[ 1970.785649] irq 31 handler lineevent_irq_handler+0x0/0x20 enabled interrupts
[ 1970.792739] WARNING: CPU: 0 PID: 0 at kernel/irq/handle.c:159 __handle_irq_event_percpu+0x162/0x170
[ 1970.860732] RIP: 0010:__handle_irq_event_percpu+0x162/0x170
...
[ 1970.946994] Call Trace:
[ 1970.949446] <IRQ>
[ 1970.951471] handle_irq_event_percpu+0x2c/0x80
[ 1970.955921] handle_irq_event+0x23/0x43
[ 1970.959766] handle_simple_irq+0x57/0x70
[ 1970.963695] generic_handle_irq+0x42/0x50
[ 1970.967717] dln2_rx+0xc1/0x210 [dln2]
[ 1970.971479] ? usb_hcd_unmap_urb_for_dma+0xa6/0x1c0
[ 1970.976362] __usb_hcd_giveback_urb+0x77/0xe0
[ 1970.980727] usb_giveback_urb_bh+0x8e/0xe0
[ 1970.984837] tasklet_action_common.isra.0+0x4a/0xe0
...
Recently xHCI driver switched to tasklets in the commit 36dc01657b49
("usb: host: xhci: Support running urb giveback in tasklet context").
The handle_irq_event_* functions are expected to be called with interrupts
disabled and they rightfully complain here because we run in tasklet context
with interrupts enabled.
Use a event spinlock to protect event handler from being interrupted.
Note, that there are only two users of this GPIO and ADC drivers and both of
them are using generic_handle_irq() which makes above happen.
Fixes: 338a12814297 ("mfd: Add support for Diolan DLN-2 devices")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The current unbinding process for Madera has some issues. The trouble
is runtime PM is disabled as the first step of the process, but
some of the drivers release IRQs causing regmap IRQ to issue a
runtime get which fails. To allow runtime PM to remain enabled during
mfd_remove_devices, the DCVDD regulator must remain available. In
the case of external DCVDD's this is simple, the regulator can simply
be disabled/put after the call to mfd_remove_devices. However, in
the case of an internally supplied DCVDD the regulator needs to be
released after the other MFD children depending on it.
Use the new MFD mfd_remove_devices_late functionality to split
the DCVDD regulator off from the other drivers.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Currently, the only way to remove MFD children is with a call to
mfd_remove_devices, which will remove all the children. Under
some circumstances it is useful to remove only a subset of the
child devices. For example if some additional clean up is required
between removal of certain child devices.
To accomplish this a level field is added to mfd_cell, the normal
mfd_remove_devices is modified to not remove devices that are set
to a higher level and a corresponding mfd_remove_devices_late
function is added to remove those children.
See further discussion at:
https://lore.kernel.org/lkml/20200616075834.GF2608702@dell/
Suggested-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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intel_scu_ipc_dev_iowrite8()
Simplify the return expression.
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The variable current_bits is being initialized with a value that is
never read and it is being updated later with a new value. The
initialization is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Battery status changes dynamically, so the corresponding registers
need to be considered volatile. Affected registers are:
- fuel gauge
- battery status
- battery interrupt
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The restart handler is executed during the shutdown phase which is
atomic/irq-less. The i2c framework supports atomic transfers since
commit 63b96983a5dd ("i2c: core: introduce callbacks for atomic
transfers") to address this use case. Using i2c regmap in that
situation is not allowed:
[ 165.177465] [ BUG: Invalid wait context ]
[ 165.181479] 5.8.0-rc3-00003-g0e9088558027-dirty #11 Not tainted
[ 165.187400] -----------------------------
[ 165.191410] systemd-shutdow/1 is trying to lock:
[ 165.196030] d85b4438 (rn5t618:170:(&rn5t618_regmap_config)->lock){+.+.}-{3:3}, at: regmap_update_bits_base+0x30/0x70
[ 165.206573] other info that might help us debug this:
[ 165.211625] context-{4:4}
[ 165.214248] 2 locks held by systemd-shutdow/1:
[ 165.218691] #0: c131c47c (system_transition_mutex){+.+.}-{3:3}, at: __do_sys_reboot+0x90/0x204
[ 165.227405] #1: c131efb4 (rcu_read_lock){....}-{1:2}, at: __atomic_notifier_call_chain+0x0/0x118
[ 165.236288] stack backtrace:
[ 165.239174] CPU: 0 PID: 1 Comm: systemd-shutdow Not tainted 5.8.0-rc3-00003-g0e9088558027-dirty #11
[ 165.248220] Hardware name: Freescale i.MX6 SoloLite (Device Tree)
[ 165.254330] [<c0112110>] (unwind_backtrace) from [<c010bfa0>] (show_stack+0x10/0x14)
[ 165.262084] [<c010bfa0>] (show_stack) from [<c058093c>] (dump_stack+0xe8/0x120)
[ 165.269407] [<c058093c>] (dump_stack) from [<c01835a4>] (__lock_acquire+0x81c/0x2ca0)
[ 165.277246] [<c01835a4>] (__lock_acquire) from [<c0186344>] (lock_acquire+0xe4/0x490)
[ 165.285090] [<c0186344>] (lock_acquire) from [<c0c98638>] (__mutex_lock+0x74/0x954)
[ 165.292756] [<c0c98638>] (__mutex_lock) from [<c0c98f34>] (mutex_lock_nested+0x1c/0x24)
[ 165.300769] [<c0c98f34>] (mutex_lock_nested) from [<c07593ec>] (regmap_update_bits_base+0x30/0x70)
[ 165.309741] [<c07593ec>] (regmap_update_bits_base) from [<c076b838>] (rn5t618_trigger_poweroff_sequence+0x34/0x64)
[ 165.320097] [<c076b838>] (rn5t618_trigger_poweroff_sequence) from [<c076b874>] (rn5t618_restart+0xc/0x2c)
[ 165.329669] [<c076b874>] (rn5t618_restart) from [<c01514f8>] (notifier_call_chain+0x48/0x80)
[ 165.338113] [<c01514f8>] (notifier_call_chain) from [<c01516a8>] (__atomic_notifier_call_chain+0x70/0x118)
[ 165.347770] [<c01516a8>] (__atomic_notifier_call_chain) from [<c0151768>] (atomic_notifier_call_chain+0x18/0x20)
[ 165.357949] [<c0151768>] (atomic_notifier_call_chain) from [<c010a828>] (machine_restart+0x68/0x80)
[ 165.367001] [<c010a828>] (machine_restart) from [<c0153224>] (__do_sys_reboot+0x11c/0x204)
[ 165.375272] [<c0153224>] (__do_sys_reboot) from [<c0100080>] (ret_fast_syscall+0x0/0x28)
[ 165.383364] Exception stack(0xd80a5fa8 to 0xd80a5ff0)
[ 165.388420] 5fa0: 00406948 00000000 fee1dead 28121969 01234567 73299b00
[ 165.396602] 5fc0: 00406948 00000000 00000000 00000058 be91abc8 00000000 be91ab60 004056f8
[ 165.404781] 5fe0: 00000058 be91aabc b6ed4d45 b6e56746
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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drivers/mfd/kempld-core.c: In function 'kempld_register_cells_generic':
drivers/mfd/kempld-core.c:105:13: error: assignment of read-only location 'devs[i++]'
105 | devs[i++] = kempld_devs[KEMPLD_I2C];
| ^
drivers/mfd/kempld-core.c:108:13: error: assignment of read-only location 'devs[i++]'
108 | devs[i++] = kempld_devs[KEMPLD_WDT];
| ^
drivers/mfd/kempld-core.c:111:13: error: assignment of read-only location 'devs[i++]'
111 | devs[i++] = kempld_devs[KEMPLD_GPIO];
| ^
drivers/mfd/kempld-core.c:114:13: error: assignment of read-only location 'devs[i++]'
114 | devs[i++] = kempld_devs[KEMPLD_UART];
| ^
Fixes: e49aa9a9bd22 ("mfd: core: Make a best effort attempt to match devices with the correct of_nodes")
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The AXP803 can be used both using the RSB proprietary bus, or a more
traditional I2C bus.
Let's add that possibility.
Signed-off-by: Frank Lee <frank@allwinnertech.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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This update adds new regmap tables to support the latest DA silicon
which will automatically be selected based on the chip and variant
information read from the device.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The current implementation performs checking in the i2c_probe()
function of the variant_code but does this immediately after the
containing struct has been initialised as all zero. This means the
check for variant code will always default to using the BB tables
and will never select AD. The variant code is subsequently set
by device_init() and later used by the RTC so really it's a little
fortunate this mismatch works.
This update adds raw I2C read access functionality to read the chip
and variant/revision information (common to all revisions) so that
it can subsequently correctly choose the proper regmap tables for
real initialisation.
Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Otherwise we get spammed with errors on resume after rtcwake:
cpcap-core spi0.0: Failed to read IRQ status: -108
Note that rtcwake is still capable of waking up the system with
this patch.
Cc: Merlijn Wajer <merlijn@wizzup.org>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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This MFD driver has no user. The keypad driver of this device never made
it into the kernel. Therefore, this driver is useless. Remove it.
Signed-off-by: Michael Walle <michael@walle.cc>
Cc: Sourav Poddar <sourav.poddar@ti.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Currently, when a child platform device (sometimes referred to as a
sub-device) is registered via the Multi-Functional Device (MFD) API,
the framework attempts to match the newly registered platform device
with its associated Device Tree (OF) node. Until now, the device has
been allocated the first node found with an identical OF compatible
string. Unfortunately, if there are, say for example '3' devices
which are to be handled by the same driver and therefore have the same
compatible string, each of them will be allocated a pointer to the
*first* node.
An example Device Tree entry might look like this:
mfd_of_test {
compatible = "mfd,of-test-parent";
#address-cells = <0x02>;
#size-cells = <0x02>;
child@aaaaaaaaaaaaaaaa {
compatible = "mfd,of-test-child";
reg = <0xaaaaaaaa 0xaaaaaaaa 0 0x11>,
<0xbbbbbbbb 0xbbbbbbbb 0 0x22>;
};
child@cccccccc {
compatible = "mfd,of-test-child";
reg = <0x00000000 0xcccccccc 0 0x33>;
};
child@dddddddd00000000 {
compatible = "mfd,of-test-child";
reg = <0xdddddddd 0x00000000 0 0x44>;
};
};
When used with example sub-device registration like this:
static const struct mfd_cell mfd_of_test_cell[] = {
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 0, "mfd,of-test-child"),
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 1, "mfd,of-test-child"),
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 2, "mfd,of-test-child")
};
... the current implementation will result in all devices being allocated
the first OF node found containing a matching compatible string:
[0.712511] mfd-of-test-child mfd-of-test-child.0: Probing platform device: 0
[0.712710] mfd-of-test-child mfd-of-test-child.0: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713033] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.713381] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713691] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.713889] mfd-of-test-child mfd-of-test-child.2: Using OF node: child@aaaaaaaaaaaaaaaa
After this patch each device will be allocated a unique OF node:
[0.712511] mfd-of-test-child mfd-of-test-child.0: Probing platform device: 0
[0.712710] mfd-of-test-child mfd-of-test-child.0: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713033] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.713381] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@cccccccc
[0.713691] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.713889] mfd-of-test-child mfd-of-test-child.2: Using OF node: child@dddddddd00000000
Which is fine if all OF nodes are identical. However if we wish to
apply an attribute to particular device, we really need to ensure the
correct OF node will be associated with the device containing the
correct address. We accomplish this by matching the device's address
expressed in DT with one provided during sub-device registration.
Like this:
static const struct mfd_cell mfd_of_test_cell[] = {
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 1, "mfd,of-test-child", 0xdddddddd00000000),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 2, "mfd,of-test-child", 0xaaaaaaaaaaaaaaaa),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 3, "mfd,of-test-child", 0x00000000cccccccc)
};
This will ensure a specific device (designated here using the
platform_ids; 1, 2 and 3) is matched with a particular OF node:
[0.712511] mfd-of-test-child mfd-of-test-child.0: Probing platform device: 0
[0.712710] mfd-of-test-child mfd-of-test-child.0: Using OF node: child@dddddddd00000000
[0.713033] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.713381] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@aaaaaaaaaaaaaaaa
[0.713691] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.713889] mfd-of-test-child mfd-of-test-child.2: Using OF node: child@cccccccc
This implementation is still not infallible, hence the mention of
"best effort" in the commit subject. Since we have not *insisted* on
the existence of 'reg' properties (in some scenarios they just do not
make sense) and no device currently uses the new 'of_reg' attribute,
we have to make an on-the-fly judgement call whether to associate the
OF node anyway. Which we do in cases where parent drivers haven't
specified a particular OF node to match to. So there is a *slight*
possibility of the following result (note: the implementation here is
convoluted, but it shows you one means by which this process can
still break):
/*
* First entry will match to the first OF node with matching compatible
* Second will fail, since the first took its OF node and is no longer available
* Third will succeed
*/
static const struct mfd_cell mfd_of_test_cell[] = {
OF_MFD_CELL("mfd-of-test-child", NULL, NULL, 0, 1, "mfd,of-test-child"),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 2, "mfd,of-test-child", 0xaaaaaaaaaaaaaaaa),
OF_MFD_CELL_REG("mfd-of-test-child", NULL, NULL, 0, 3, "mfd,of-test-child", 0x00000000cccccccc)
};
The result:
[0.753869] mfd-of-test-parent mfd_of_test: Registering 3 devices
[0.756597] mfd-of-test-child: Failed to locate of_node [id: 2]
[0.759999] mfd-of-test-child mfd-of-test-child.1: Probing platform device: 1
[0.760314] mfd-of-test-child mfd-of-test-child.1: Using OF node: child@aaaaaaaaaaaaaaaa
[0.760908] mfd-of-test-child mfd-of-test-child.2: Probing platform device: 2
[0.761183] mfd-of-test-child mfd-of-test-child.2: No OF node associated with this device
[0.761621] mfd-of-test-child mfd-of-test-child.3: Probing platform device: 3
[0.761899] mfd-of-test-child mfd-of-test-child.3: Using OF node: child@cccccccc
We could code around this with some pre-parsing semantics, but the
added complexity required to cover each and every corner-case is not
justified. Merely patching the current failing (via this patch) is
already working with some pretty small corner-cases. Other issues
should be patched in the parent drivers which can be achieved simply
by implementing OF_MFD_CELL_REG().
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI,
struct axp20x_i2c_acpi_match becomes defined by unused.
This squashes the current W=1 kernel builds warning:
drivers/mfd/axp20x-i2c.c:82:36: warning: ‘axp20x_i2c_acpi_match’ defined but not used [-Wunused-const-variable=]
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Carlo Caione <carlo@caione.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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'i / pdata->num_irqs' always equates to 0 and 'BIT(i % pdata->num_irqs)'
always ends up being BIT(i) here, so make that clearer in the code. If
the code base needs to support more than 32 IRQs in the future, this will
have to be reworked, but lets just keep it simple for as long as we can.
This fixes the following W=1 warning:
drivers/mfd/sprd-sc27xx-spi.c:255 sprd_pmic_probe() debug: sval_binop_unsigned: divide by zero
Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Suggested-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Argument 'received' was incorrectly named by its struct type 'completion'
instead of its name.
Fixes the following W=1 warning:
drivers/mfd/rave-sp.c:107: warning: Function parameter or member 'received' not described in 'rave_sp_reply'
Cc: Andrey Vostrikov <andrey.vostrikov@cogentembedded.com>
Cc: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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arg 'report'
Kerneldoc syntax is used, but not complete.
Descriptions are required for all arguments.
Fixes the following W=1 build warning:
drivers/mfd/si476x-cmd.c:907: warning: Function parameter or member 'report' not described in 'si476x_core_cmd_fm_rds_status'
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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4 of the old arguments were grouped and moved into a struct which
is now passed as a pointer instead of the arguments themselves.
However, whoever carried out this work forgot to update the
function's kerneldoc header.
Fixes the following W=1 warnings:
drivers/mfd/si476x-cmd.c:746: warning: Function parameter or member 'rsqargs' not described in 'si476x_core_cmd_am_rsq_s
drivers/mfd/si476x-cmd.c:746: warning: Excess function parameter 'rsqack' description in 'si476x_core_cmd_am_rsq_status'
drivers/mfd/si476x-cmd.c:746: warning: Excess function parameter 'attune' description in 'si476x_core_cmd_am_rsq_status'
drivers/mfd/si476x-cmd.c:746: warning: Excess function parameter 'cancel' description in 'si476x_core_cmd_am_rsq_status'
drivers/mfd/si476x-cmd.c:746: warning: Excess function parameter 'stcack' description in 'si476x_core_cmd_am_rsq_status'
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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's/FALLTHROUG/FALLTHROUGH'
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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'func'
Kerneldoc syntax is used, but not complete.
Descriptions are required for all arguments.
Fixes the following W=1 build warning:
drivers/mfd/si476x-i2c.c:550: warning: Function parameter or member 'func' not described in 'si476x_core_fwver_to_revision'
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc validation gets confused if syntax isn't "@.*: ".
Adding the missing colons squashes the following W=1 warnings:
drivers/mfd/si476x-cmd.c:525: warning: Function parameter or member 'dout' not described in 'si476x_core_cmd_dig_audio_pin_c
drivers/mfd/si476x-cmd.c:525: warning: Function parameter or member 'xout' not described in 'si476x_core_cmd_dig_audio_pin_c
drivers/mfd/si476x-cmd.c:574: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_zif_pin_cfg'
drivers/mfd/si476x-cmd.c:574: warning: Function parameter or member 'iqclk' not described in 'si476x_core_cmd_zif_pin_cfg'
drivers/mfd/si476x-cmd.c:574: warning: Function parameter or member 'iqfs' not described in 'si476x_core_cmd_zif_pin_cfg'
drivers/mfd/si476x-cmd.c:574: warning: Function parameter or member 'iout' not described in 'si476x_core_cmd_zif_pin_cfg'
drivers/mfd/si476x-cmd.c:574: warning: Function parameter or member 'qout' not described in 'si476x_core_cmd_zif_pin_cfg'
drivers/mfd/si476x-i2c.c:550: warning: Function parameter or member 'func' not described in 'si476x_core_fwver_to_revision'
drivers/mfd/si476x-cmd.c:631: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_ic_link_gpo_ctl
drivers/mfd/si476x-cmd.c:631: warning: Function parameter or member 'icin' not described in 'si476x_core_cmd_ic_link_gpo_ctl
drivers/mfd/si476x-cmd.c:631: warning: Function parameter or member 'icip' not described in 'si476x_core_cmd_ic_link_gpo_ctl
drivers/mfd/si476x-cmd.c:631: warning: Function parameter or member 'icon' not described in 'si476x_core_cmd_ic_link_gpo_ctl
drivers/mfd/si476x-cmd.c:631: warning: Function parameter or member 'icop' not described in 'si476x_core_cmd_ic_link_gpo_ctl
drivers/mfd/si476x-cmd.c:662: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_ana_audio_pin_c
drivers/mfd/si476x-cmd.c:662: warning: Function parameter or member 'lrout' not described in 'si476x_core_cmd_ana_audio_pin_
drivers/mfd/si476x-cmd.c:697: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_intb_pin_cfg_a1
drivers/mfd/si476x-cmd.c:697: warning: Function parameter or member 'intb' not described in 'si476x_core_cmd_intb_pin_cfg_a1
drivers/mfd/si476x-cmd.c:697: warning: Function parameter or member 'a1' not described in 'si476x_core_cmd_intb_pin_cfg_a10'
drivers/mfd/si476x-cmd.c:746: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_am_rsq_status'
drivers/mfd/si476x-cmd.c:746: warning: Function parameter or member 'rsqargs' not described in 'si476x_core_cmd_am_rsq_statu
drivers/mfd/si476x-cmd.c:746: warning: Function parameter or member 'report' not described in 'si476x_core_cmd_am_rsq_status
drivers/mfd/si476x-cmd.c:878: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_fm_seek_start'
drivers/mfd/si476x-cmd.c:878: warning: Function parameter or member 'seekup' not described in 'si476x_core_cmd_fm_seek_start
drivers/mfd/si476x-cmd.c:878: warning: Function parameter or member 'wrap' not described in 'si476x_core_cmd_fm_seek_start'
drivers/mfd/si476x-cmd.c:907: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_fm_rds_status'
drivers/mfd/si476x-cmd.c:907: warning: Function parameter or member 'status_only' not described in 'si476x_core_cmd_fm_rds_s
drivers/mfd/si476x-cmd.c:907: warning: Function parameter or member 'mtfifo' not described in 'si476x_core_cmd_fm_rds_status
drivers/mfd/si476x-cmd.c:907: warning: Function parameter or member 'intack' not described in 'si476x_core_cmd_fm_rds_status
drivers/mfd/si476x-cmd.c:907: warning: Function parameter or member 'report' not described in 'si476x_core_cmd_fm_rds_status
drivers/mfd/si476x-cmd.c:1052: warning: Function parameter or member 'core' not described in 'si476x_core_cmd_am_seek_start'
drivers/mfd/si476x-cmd.c:1052: warning: Function parameter or member 'seekup' not described in 'si476x_core_cmd_am_seek_star
drivers/mfd/si476x-cmd.c:1052: warning: Function parameter or member 'wrap' not described in 'si476x_core_cmd_am_seek_start'
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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si476x_core_send_command()'s 5th argument has never been called response.
This change must have occurred prior to the driver being Mainlined.
We're also taking the opportunity to bring the first description back
into line, making my OCD happy!
This fixes the following W=1 warning(s):
drivers/mfd/si476x-cmd.c:264: warning: Function parameter or member 'resp' not described in 'si476x_core_send_command
drivers/mfd/si476x-cmd.c:264: warning: Excess function parameter 'response' description in 'si476x_core_send_command'
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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'status' hasn't been checked since 2008.
It's probably safe to remove it.
Fixes W=1 warning:
drivers/mfd/tps65010.c:407:7: warning: variable ‘status’ set but not used [-Wunused-but-set-variable]
407 | int status;
| ^~~~~~
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc validation gets confused if syntax isn't "@.*: ".
Adding the missing colons squashes the following W=1 warnings:
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'dev' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'locked' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'freq' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'paf' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'imeich' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'cid' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'tac' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'fac' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'svn' not described in 'ab3100_otp'
drivers/mfd/ab3100-otp.c:60: warning: Function parameter or member 'debugfs' not described in 'ab3100_otp'
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The kerneldocs for both tps65217_reg_write() and tps65217_update_bits()
describe their first arguments as 'tps65217', when in reality these are
simply called 'tps'.
Fixes the following W=1 warnings:
drivers/mfd/tps65217.c:215: warning: Function parameter or member 'tps' not described in 'tps65217_reg_write'
drivers/mfd/tps65217.c:215: warning: Excess function parameter 'tps65217' description in 'tps65217_reg_write'
drivers/mfd/tps65217.c:261: warning: Function parameter or member 'tps' not described in 'tps65217_update_bits'
drivers/mfd/tps65217.c:261: warning: Excess function parameter 'tps65217' description in 'tps65217_update_bits'
Cc: Tony Lindgren <tony@atomide.com>
Cc: AnilKumar Ch <anilkumar@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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The kerneldocs for both tps65218_reg_write() and tps65218_update_bits()
describe their first arguments as 'tps65218', when in reality these are
simply called 'tps'.
Fixes the following W=1 warnings:
drivers/mfd/tps65218.c:58: warning: Function parameter or member 'tps' not described in 'tps65218_reg_write'
drivers/mfd/tps65218.c:58: warning: Excess function parameter 'tps65218' description in 'tps65218_reg_write'
drivers/mfd/tps65218.c:90: warning: Function parameter or member 'tps' not described in 'tps65218_update_bits'
drivers/mfd/tps65218.c:90: warning: Excess function parameter 'tps65218' description in 'tps65218_update_bits'
Cc: Tony Lindgren <tony@atomide.com>
Cc: J Keerthy <j-keerthy@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc expects kernel structures to be prefixed with 'struct'.
Fixes the following W=1 level warnings:
drivers/mfd/cros_ec_dev.c:32: warning: cannot understand function prototype: 'struct cros_feature_to_name '
drivers/mfd/cros_ec_dev.c:44: warning: cannot understand function prototype: 'struct cros_feature_to_cells '
Cc: Benson Leung <bleung@chromium.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Bill Richardson <wfrichar@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc syntax is used, but not complete. Arg descriptions are required.
Fixes the following W=1 build warnings:
drivers/mfd/altera-sysmgr.c:95: warning: Function parameter or member 'np' not described in 'altr_sysmgr_regmap_lookup_by_phandle'
drivers/mfd/altera-sysmgr.c:95: warning: Function parameter or member 'property' not described in 'altr_sysmgr_regmap_lookup_by_phandle'
Cc: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc valication gets confused if syntax isn't "@.*: ".
Adding the missing colons squashes the following W=1 warnings:
drivers/mfd/atmel-smc.c:247: warning: Function parameter or member 'conf' not described in 'atmel_smc_cs_conf_apply'
drivers/mfd/atmel-smc.c:268: warning: Function parameter or member 'conf' not described in 'atmel_hsmc_cs_conf_apply'
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc syntax is used, but not complete. Arg descriptions required.
Prevents warnings like:
drivers/mfd/omap-usb-tll.c:204: warning: Function parameter or member 'pdev' not described in 'usbtll_omap_probe
Cc: Tony Lindgren <tony@atomide.com>
Cc: Keshava Munegowda <keshava_mgowda@ti.com>
Cc: Roger Quadros <rogerq@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc syntax is used, but not complete. Arg descriptions required.
Prevents warnings like:
drivers/mfd/omap-usb-host.c:531: warning: Function parameter or member 'pdev' not described in 'usbhs_omap_probe'
Cc: Tony Lindgren <tony@atomide.com>
Cc: Keshava Munegowda <keshava_mgowda@ti.com>
Cc: Roger Quadros <rogerq@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc is for documenting function arguments and return values.
Prevents warnings like:
drivers/mfd/omap-usb-host.c:128: warning: cannot understand function prototype: 'const char * const port_modes[] = '
Cc: Tony Lindgren <tony@atomide.com>
Cc: Keshava Munegowda <keshava_mgowda@ti.com>
Cc: Roger Quadros <rogerq@ti.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Not only is the current header incorrect, the isn't actually a
need to document the ubiquitous platform probe call.
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Each function parameter should be documented in kerneldoc format.
Squashes the following W=1 warnings:
drivers/mfd/db8500-prcmu.c:2281: warning: Function parameter or member 'reset_code' not described in 'db8500_prcmu_system_reset'
drivers/mfd/db8500-prcmu.c:3012: warning: Function parameter or member 'pdev' not described in 'db8500_prcmu_probe'
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Each function parameter should be documented in kerneldoc format.
Squashes the following W=1 warnings:
drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'dev' not described in 'devm_mfd_add_devices'
drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'id' not described in 'devm_mfd_add_devices'
drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'cells' not described in 'devm_mfd_add_devices'
drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'n_devs' not described in 'devm_mfd_add_devices'
drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'mem_base' not described in 'devm_mfd_add_devices'
drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'irq_base' not described in 'devm_mfd_add_devices'
drivers/mfd/mfd-core.c:326: warning: Function parameter or member 'domain' not described in 'devm_mfd_add_devices'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc syntax is used, but not complete. Descriptions required.
Prevents warnings like:
drivers/mfd/wm8350-core.c:136: warning: Function parameter or member 'wm8350' not described in 'wm8350_reg_lock'
drivers/mfd/wm8350-core.c:165: warning: Function parameter or member 'wm8350' not described in 'wm8350_reg_unlock'
Cc: patches@opensource.cirrus.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc syntax is used, but not complete. Descriptions required.
Prevents warnings like:
drivers/mfd/wm831x-core.c:119: warning: Function parameter or member 'wm831x' not described in 'wm831x_reg_lock'
drivers/mfd/wm831x-core.c:145: warning: Function parameter or member 'wm831x' not described in 'wm831x_reg_unlock'
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: patches@opensource.cirrus.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc syntax is used, but not complete. Descriptions required.
Prevents warnings like:
drivers/mfd/wm8400-core.c:113: warning: Function parameter or member 'wm8400' not described in 'wm8400_reset_codec_reg_cache'
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: patches@opensource.cirrus.com
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Kerneldoc is for documenting function arguments and return values.
Prevents warnings like:
drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35890' not described in enum 'tc3589x_version'
drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35892' not described in enum 'tc3589x_version'
drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35893' not described in enum 'tc3589x_version'
drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35894' not described in enum 'tc3589x_version'
drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35895' not described in enum 'tc3589x_version'
drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_TC35896' not described in enum 'tc3589x_version'
drivers/mfd/tc3589x.c:32: warning: Enum value 'TC3589X_UNKNOWN' not described in enum 'tc3589x_version'
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Smatch reports:
drivers/mfd/ab8500-debugfs.c:1804:20: error: incompatible types in comparison expression (different type sizes):
drivers/mfd/ab8500-debugfs.c:1804:20: unsigned int *
drivers/mfd/ab8500-debugfs.c:1804:20: unsigned long *
This is due to mixed types being compared in a min() comparison. Fix
this by treating values as signed and casting them to the same type
as the receiving variable.
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Smatch reports:
drivers/mfd/ab3100-core.c:501:20: error: incompatible types in comparison expression (different type sizes):
drivers/mfd/ab3100-core.c:501:20: unsigned int *
drivers/mfd/ab3100-core.c:501:20: unsigned long *
drivers/mfd/ab8500-debugfs.c:1804:20: error: incompatible types in comparison expression (different type sizes):
drivers/mfd/ab8500-debugfs.c:1804:20: unsigned int *
drivers/mfd/ab8500-debugfs.c:1804:20: unsigned long *
Since the second min() argument can be less than 0 a signed
variable is required for assignment. However, the non-sized
type size_t is passed in from the userspace handlers. In order
to firstly compare, then assign the smallest value, we firstly
need to cast them both to the same as the receiving size_t typed
variable.
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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declared warning
Sparse reports:
drivers/mfd/sprd-sc27xx-spi.c:59:23: warning: symbol 'sprd_pmic_detect_charger_type' was not declared. Should it be static?
... due to a missing header file.
Cc: Orson Zhai <orsonzhai@gmail.com>
Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Baolin Wang <baolin.wang7@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
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