kernel/git/next/linux-next.git/drivers/counter/ftm-quaddec.c, branch master

counter: ftm-quaddec: use devm_mutex_init()

2026-05-27T22:12:18+00:00

ftm_quaddec_probe() calls mutex_init() but neither the cleanup action nor a remove callback issues a matching mutex_destroy(), so the lock debug state is leaked on driver unbind. Switch to devm_mutex_init() so the mutex is torn down in the same devm scope it was set up in. Signed-off-by: Stepan Ionichev Reviewed-by: Joshua Crofts Link: https://lore.kernel.org/r/20260523184351.7567-1-sozdayvek@gmail.com Signed-off-by: William Breathitt Gray

module: Convert symbol namespace to string literal

2024-12-02T19:34:44+00:00

Clean up the existing export namespace code along the same lines of commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo) to __section("foo")") and for the same reason, it is not desired for the namespace argument to be a macro expansion itself. Scripted using git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file; do awk -i inplace ' /^#define EXPORT_SYMBOL_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /^#define MODULE_IMPORT_NS/ { gsub(/__stringify$ns$/, "ns"); print; next; } /MODULE_IMPORT_NS/ { $0 = gensub(/MODULE_IMPORT_NS$([^)]*)$/, "MODULE_IMPORT_NS(\"\\1\")", "g"); } /EXPORT_SYMBOL_NS/ { if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)$([^,]+),/) { if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)$/ && $0 !~ /(EXPORT_SYMBOL_NS[^(]*)/ && $0 !~ /^my/) { getline line; gsub(/[[:space:]]*\\$/, ""); gsub(/[[:space:]]/, "", line); $0 = $0 " " line; } $0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)$([^,]+), ([^)]+)$/, "\\1(\\2, \"\\3\")", "g"); } } { print }' $file; done Requested-by: Masahiro Yamada Signed-off-by: Peter Zijlstra (Intel) Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc Acked-by: Greg KH Signed-off-by: Linus Torvalds

counter: ftm-quaddec: Enable module autoloading

2024-09-30T13:27:59+00:00

Add MODULE_DEVICE_TABLE(), so modules can be properly autoloaded based on the alias from of_device_id table. Signed-off-by: Liao Chen Link: https://lore.kernel.org/r/20240902122014.905237-1-liaochen4@huawei.com Signed-off-by: William Breathitt Gray

counter: ftm-quaddec: add missing MODULE_DESCRIPTION() macro

2024-07-01T01:29:47+00:00

make allmodconfig && make W=1 C=1 reports: WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/counter/ftm-quaddec.o Add the missing invocation of the MODULE_DESCRIPTION() macro. Signed-off-by: Jeff Johnson Link: https://lore.kernel.org/r/20240602-md-ftm-quaddec-v1-1-1bbdf705ad31@quicinc.com Signed-off-by: William Breathitt Gray

counter: Move symbols into COUNTER namespace

2022-09-30T12:32:35+00:00

Counter subsystem symbols are only relevant to counter drivers. A COUNTER namespace is created to control the availability of these symbols to modules that import this namespace explicitly. Cc: Patrick Havelange Cc: Jarkko Nikula Cc: Oleksij Rempel Cc: Pengutronix Kernel Team Cc: Kamel Bouhara Cc: Fabrice Gasnier Cc: Maxime Coquelin Cc: Alexandre Torgue Acked-by: David Lechner Reviewed-by: Jonathan Cameron Link: https://lore.kernel.org/r/20220815220321.74161-1-william.gray@linaro.org/ Signed-off-by: William Breathitt Gray Link: https://lore.kernel.org/r/8a756df96c24946547a7ece5caa5f654809c5e7f.1664318353.git.william.gray@linaro.org Signed-off-by: Greg Kroah-Hartman

counter: ftm-quaddec: Convert to new counter registration

2021-12-30T16:44:07+00:00

This fixes device lifetime issues where it was possible to free a live struct device. Fixes: a3b9a99980d9 ("counter: add FlexTimer Module Quadrature decoder counter driver") Reviewed-by: Jonathan Cameron Acked-by: William Breathitt Gray Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20211230150300.72196-19-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman

counter: ftm-quaddec: Convert to counter_priv() wrapper

2021-12-30T16:44:06+00:00

This is a straight forward conversion to the new counter_priv() wrapper. Acked-by: Jonathan Cameron Acked-by: William Breathitt Gray Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20211230150300.72196-10-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman

counter: ftm-quaddec: Drop unused platform_set_drvdata()

2021-12-30T16:44:05+00:00

The driver doesn't ever use platform_get_drvdata, so drop this unused call. Reviewed-by: Jonathan Cameron Acked-by: William Breathitt Gray Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20211230150300.72196-3-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman

counter: Internalize sysfs interface code

2021-10-17T09:52:58+00:00

This is a reimplementation of the Generic Counter driver interface. There are no modifications to the Counter subsystem userspace interface, so existing userspace applications should continue to run seamlessly. The purpose of this patch is to internalize the sysfs interface code among the various counter drivers into a shared module. Counter drivers pass and take data natively (i.e. u8, u64, etc.) and the shared counter module handles the translation between the sysfs interface and the device drivers. This guarantees a standard userspace interface for all counter drivers, and helps generalize the Generic Counter driver ABI in order to support the Generic Counter chrdev interface (introduced in a subsequent patch) without significant changes to the existing counter drivers. Note, Counter device registration is the same as before: drivers populate a struct counter_device with components and callbacks, then pass the structure to the devm_counter_register function. However, what's different now is how the Counter subsystem code handles this registration internally. Whereas before callbacks would interact directly with sysfs data, this interaction is now abstracted and instead callbacks interact with native C data types. The counter_comp structure forms the basis for Counter extensions. The counter-sysfs.c file contains the code to parse through the counter_device structure and register the requested components and extensions. Attributes are created and populated based on type, with respective translation functions to handle the mapping between sysfs and the counter driver callbacks. The translation performed for each attribute is straightforward: the attribute type and data is parsed from the counter_attribute structure, the respective counter driver read/write callback is called, and sysfs I/O is handled before or after the driver read/write function is called. Cc: Jarkko Nikula Cc: Patrick Havelange Cc: Kamel Bouhara Cc: Maxime Coquelin Cc: Alexandre Torgue Cc: Dan Carpenter Acked-by: Syed Nayyar Waris Reviewed-by: David Lechner Tested-by: David Lechner Signed-off-by: William Breathitt Gray Reviewed-by: Fabrice Gasnier # for stm32 Link: https://lore.kernel.org/r/c68b4a1ffb195c1a2f65e8dd5ad7b7c14e79c6ef.1630031207.git.vilhelm.gray@gmail.com Signed-off-by: Jonathan Cameron

counter: Rename counter_count_function to counter_function

2021-08-09T19:17:36+00:00

The phrase "Counter Count function" is verbose and unintentionally implies that function is a Count extension. This patch adjusts the Counter subsystem code to use the more direct "Counter function" phrase to make the intent of this code clearer. Cc: Jarkko Nikula Cc: Patrick Havelange Cc: Oleksij Rempel Cc: Kamel Bouhara Cc: Maxime Coquelin Cc: Alexandre Torgue Cc: David Lechner Acked-by: Syed Nayyar Waris Reviewed-by: Fabrice Gasnier Signed-off-by: William Breathitt Gray Link: https://lore.kernel.org/r/8268c54d6f42075a19bb08151a37831e22652499.1627990337.git.vilhelm.gray@gmail.com Signed-off-by: Jonathan Cameron