kernel/linux.git/drivers/i2c/i2c-dev.c, branch v7.0-rc7

Convert more 'alloc_obj' cases to default GFP_KERNEL arguments

2026-02-22T04:03:00+00:00

This converts some of the visually simpler cases that have been split over multiple lines. I only did the ones that are easy to verify the resulting diff by having just that final GFP_KERNEL argument on the next line. Somebody should probably do a proper coccinelle script for this, but for me the trivial script actually resulted in an assertion failure in the middle of the script. I probably had made it a bit _too_ trivial. So after fighting that far a while I decided to just do some of the syntactically simpler cases with variations of the previous 'sed' scripts. The more syntactically complex multi-line cases would mostly really want whitespace cleanup anyway. Signed-off-by: Linus Torvalds

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

i2c: dev: Fix memory leak when underlying adapter does not support I2C

2024-11-14T10:22:57+00:00

Early return in i2cdev_ioctl_rdwr() failed to free the memory allocated by the caller. Move freeing the memory to the function where it has been allocated to prevent similar leaks in the future. Fixes: 97ca843f6ad3 ("i2c: dev: Check for I2C_FUNC_I2C before calling i2c_transfer") Signed-off-by: Igor Pylypiv [wsa: replaced '== NULL' with '!'] Signed-off-by: Wolfram Sang

[tree-wide] finally take no_llseek out

2024-09-27T15:18:43+00:00

no_llseek had been defined to NULL two years ago, in commit 868941b14441 ("fs: remove no_llseek") To quote that commit, At -rc1 we'll need do a mechanical removal of no_llseek - git grep -l -w no_llseek | grep -v porting.rst | while read i; do sed -i '/\/d' $i done would do it. Unfortunately, that hadn't been done. Linus, could you do that now, so that we could finally put that thing to rest? All instances are of the form .llseek = no_llseek, so it's obviously safe. Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

i2c: dev: Check for I2C_FUNC_I2C before calling i2c_transfer

2024-06-26T10:45:25+00:00

It is good practice to check that the underlying adapter supports I2C transfers before attempting them. The i2c core would eventually return an error, but it's more efficient to fail early. Signed-off-by: Jean Delvare Reviewed-by: Andi Shyti Signed-off-by: Wolfram Sang

i2c: dev: copy userspace array safely

2023-11-08T09:26:27+00:00

i2c-dev.c utilizes memdup_user() to copy a userspace array. This is done without an overflow check. Use the new wrapper memdup_array_user() to copy the array more safely. Suggested-by: Dave Airlie Signed-off-by: Philipp Stanner Signed-off-by: Wolfram Sang

i2c: dev: make i2c_dev_class a static const structure

2023-09-19T20:09:58+00:00

Now that the driver core allows for struct class to be in read-only memory, move the i2c_dev_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Suggested-by: Greg Kroah-Hartman Signed-off-by: Ivan Orlov Signed-off-by: Wolfram Sang

Merge 6.3-rc5 into driver-core-next

2023-04-03T07:33:30+00:00

We need the fixes in here for testing, as well as the driver core changes for documentation updates to build on. Signed-off-by: Greg Kroah-Hartman

driver core: class: remove module * from class_create()

2023-03-17T14:16:33+00:00

The module pointer in class_create() never actually did anything, and it shouldn't have been requred to be set as a parameter even if it did something. So just remove it and fix up all callers of the function in the kernel tree at the same time. Cc: "Rafael J. Wysocki" Acked-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20230313181843.1207845-4-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman