kernel/linux.git/drivers/usb/misc/usblcd.c, branch v7.0-rc7

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

USB: usblcd: Remove the superfluous break

2020-08-28T07:48:33+00:00

Remove the superfuous break, as there is a 'return' before it. Signed-off-by: Jing Xiangfeng Link: https://lore.kernel.org/r/20200819012316.170388-1-jingxiangfeng@huawei.com Signed-off-by: Greg Kroah-Hartman

USB: usblcd: use pr_err()

2019-10-04T09:11:08+00:00

Replace the one remaining printk with pr_err(). Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20190926091228.24634-10-johan@kernel.org Signed-off-by: Greg Kroah-Hartman

USB: usblcd: drop redundant lcd mutex

2019-10-04T09:11:08+00:00

Drop the redundant lcd mutex introduced by commit 925ce689bb31 ("USB: autoconvert trivial BKL users to private mutex") which replaced an earlier BKL use. The lock serialised calls to open() against other open() and a custom ioctl() returning the bcdDevice (sic!), but neither is needed. Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20190926091228.24634-9-johan@kernel.org Signed-off-by: Greg Kroah-Hartman

USB: usblcd: drop redundant disconnect mutex

2019-10-04T09:11:08+00:00

Drop the redundant disconnect mutex which was introduced after the open-disconnect race had been addressed generally in USB core by commit d4ead16f50f9 ("USB: prevent char device open/deregister race"). Specifically, the rw-semaphore in core guarantees that all calls to open() will have completed and that no new calls to open() will occur after usb_deregister_dev() returns. Hence there is no need use the driver data as an inverted disconnected flag. Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20190926091228.24634-8-johan@kernel.org Signed-off-by: Greg Kroah-Hartman

USB: usblcd: fix I/O after disconnect

2019-10-04T09:11:08+00:00

Make sure to stop all I/O on disconnect by adding a disconnected flag which is used to prevent new I/O from being started and by stopping all ongoing I/O before returning. This also fixes a potential use-after-free on driver unbind in case the driver data is freed before the completion handler has run. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable # 7bbe990c989e Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20190926091228.24634-7-johan@kernel.org Signed-off-by: Greg Kroah-Hartman

USB: add SPDX identifiers to all remaining files in drivers/usb/

2017-11-04T10:48:02+00:00

It's good to have SPDX identifiers in all files to make it easier to audit the kernel tree for correct licenses. Update the drivers/usb/ and include/linux/usb* files with the correct SPDX license identifier based on the license text in the file itself. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This work is based on a script and data from Thomas Gleixner, Philippe Ombredanne, and Kate Stewart. Cc: Thomas Gleixner Cc: Kate Stewart Cc: Philippe Ombredanne Signed-off-by: Greg Kroah-Hartman Acked-by: Felipe Balbi Acked-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

USB: usblcd: refactor endpoint retrieval

2017-03-23T12:54:03+00:00

Use the new endpoint helpers to lookup the required bulk-in and bulk-out endpoints. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman

usb: misc: usblcd: don't print on ENOMEM

2016-08-30T17:17:38+00:00

All kmalloc-based functions print enough information on failures. Signed-off-by: Wolfram Sang Signed-off-by: Greg Kroah-Hartman