kernel/linux.git/include/linux/comedi/comedidev.h, branch v6.18.21Linux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=v6.18.212025-04-25T13:53:19+00:00comedi: remove the mapping of the Comedi buffer in vmalloc address space2025-04-25T13:53:19+00:00Ian Abbottabbotti@mev.co.uk2025-04-15T11:35:58+00:00urn:sha1:5117f28a7d78d00a44d03463115a0f295dbbb1ff
Now that all the code that accesses the Comedi buffer data does so
page-by-page, using the `virt_addr` member of `struct comedi_buf_page`
to point to the data of each page, do not linearly map the buffer into
vmalloc address space (pointed to by the `prealloc_buf` member of
`struct comedi_async`). That was only done for convenience, but was not
done for those drivers that need a DMA coherent buffer, which is
allocated in a single chunk. Remove the `prealloc_buf` member as it is
no longer used.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20250415114008.5977-4-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
comedi: Annotate struct comedi_lrange with __counted_by2023-10-05T11:34:05+00:00Christophe JAILLETchristophe.jaillet@wanadoo.fr2023-09-30T09:14:47+00:00urn:sha1:77f048bcbf07f7dc961f3b2b7815038b5405ec60
Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/5c3b7459b820e22e2ac6ce892d4aadcc119cc919.1696065263.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
comedi: Move the main COMEDI headers2021-11-26T15:48:59+00:00Ian Abbottabbotti@mev.co.uk2021-11-17T12:05:59+00:00urn:sha1:df0e68c1e9945e2ee86d266ce45597bbd8299b06
Move the main COMEDI driver headers out of "drivers/comedi/" into new
directory "include/linux/comedi/". These are "comedidev.h",
"comedilib.h", "comedi_pci.h", "comedi_pcmcia.h", and "comedi_usb.h".
Additionally, move the user-space API header "comedi.h" into
"include/uapi/linux/" and add "WITH Linux-syscall-note" to its
SPDX-License-Identifier.
Update the "COMEDI DRIVERS" section of the MAINTAINERS file to account
for these changes.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Link: https://lore.kernel.org/r/20211117120604.117740-2-abbotti@mev.co.uk
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>