kernel/linux.git/drivers/siox/siox-core.c, branch v7.0.11

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

driver core: have match() callback in struct bus_type take a const *

2024-07-03T13:16:54+00:00

In the match() callback, the struct device_driver * should not be changed, so change the function callback to be a const *. This is one step of many towards making the driver core safe to have struct device_driver in read-only memory. Because the match() callback is in all busses, all busses are modified to handle this properly. This does entail switching some container_of() calls to container_of_const() to properly handle the constant *. For some busses, like PCI and USB and HV, the const * is cast away in the match callback as those busses do want to modify those structures at this point in time (they have a local lock in the driver structure.) That will have to be changed in the future if they wish to have their struct device * in read-only-memory. Cc: Rafael J. Wysocki Reviewed-by: Alex Elder Acked-by: Sumit Garg Link: https://lore.kernel.org/r/2024070136-wrongdoer-busily-01e8@gregkh Signed-off-by: Greg Kroah-Hartman

Merge tag 'siox/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

2024-03-21T22:18:18+00:00

Pull siox updates from Uwe Kleine-König: "This reworks how siox device registration works yielding a saner API. This allows us to simplify the gpio bus driver using two new devm functions" * tag 'siox/for-6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: siox: bus-gpio: Simplify using devm_siox_* functions siox: Provide a devm variant of siox_master_register() siox: Provide a devm variant of siox_master_alloc() siox: Don't pass the reference on a master in siox_master_register()

siox: Provide a devm variant of siox_master_register()

2024-03-08T21:01:10+00:00

This allows to simplify siox master drivers in the next step. Acked-by: Thorsten Scherer Link: https://lore.kernel.org/r/e961dfb3e94f106b16f5eacff2110fc7fa0cab13.1708328466.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König

siox: Provide a devm variant of siox_master_alloc()

2024-03-08T21:01:09+00:00

This allows to simplify siox master drivers in the next step. Acked-by: Thorsten Scherer Link: https://lore.kernel.org/r/ad141dd22c7d95ad0bd347f257ce586e1afb22a4.1708328466.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König

siox: Don't pass the reference on a master in siox_master_register()

2024-03-08T21:01:09+00:00

While it's technically fine to pass the ownership of the reference on a struct siox_master from the caller of siox_master_register() to the framework this is hard to use. Instead let the framework take its own reference (that is freed in siox_master_unregister()) and drop the bus driver's reference in its remove callback. Acked-by: Thorsten Scherer Link: https://lore.kernel.org/r/1e8d09d17848e58e8fc6a46278b5e8fb0cf4618a.1708328466.git.u.kleine-koenig@pengutronix.de Signed-off-by: Uwe Kleine-König

siox: make siox_bus_type const

2024-03-07T20:40:36+00:00

Since commit d492cc2573a0 ("driver core: device.h: make struct bus_type a const *"), the driver core can properly handle constant struct bus_type. Move the siox_bus_type variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman Suggested-by: Greg Kroah-Hartman Signed-off-by: "Ricardo B. Marliere" Acked-by: Uwe Kleine-König Reviewed-by: Greg Kroah-Hartman Acked-by: Thorsten Scherer Link: https://lore.kernel.org/r/20240204-bus_cleanup-siox-v2-1-3813a6a55dcc@marliere.net Signed-off-by: Greg Kroah-Hartman

siox: constify the struct device_type usage

2024-03-07T20:37:04+00:00

Since commit aed65af1cc2f ("drivers: make device_type const"), the driver core can properly handle constant struct device_type. Move the siox_device_type and siox_master_type variables to be constant structures as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman Signed-off-by: "Ricardo B. Marliere" Acked-by: Uwe Kleine-König Acked-by: Thorsten Scherer Link: https://lore.kernel.org/r/20240219-device_cleanup-siox-v1-1-eb32ca2b0113@marliere.net Signed-off-by: Greg Kroah-Hartman

siox: fix possible memory leak in siox_device_add()

2022-11-09T14:40:14+00:00

If device_register() returns error in siox_device_add(), the name allocated by dev_set_name() need be freed. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanup(), and sdevice is freed in siox_device_release(), set it to null in error path. Fixes: bbecb07fa0af ("siox: new driver framework for eckelmann SIOX") Signed-off-by: Yang Yingliang Reviewed-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20221104021334.618189-1-yangyingliang@huawei.com Signed-off-by: Greg Kroah-Hartman