mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-07-14 21:43:02 +02:00
Arnd BergmannandSasha Levin
e85d53ebae
[ Upstream commit9f3dbcb563] csiostor uses function pointer casts to keep the csio_ln_ev state machine hidden, but this causes warnings about control flow integrity (KCFI) violations in clang-16 and higher: drivers/scsi/csiostor/csio_lnode.c:1098:33: error: cast from 'void (*)(struct csio_lnode *, enum csio_ln_ev)' to 'csio_sm_state_t' (aka 'void (*)(void *, unsigned int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 1098 | return (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_ready)); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/csiostor/csio_lnode.c:1369:29: error: cast from 'void (*)(struct csio_lnode *, enum csio_ln_ev)' to 'csio_sm_state_t' (aka 'void (*)(void *, unsigned int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 1369 | if (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_uninit)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/csiostor/csio_lnode.c:1373:29: error: cast from 'void (*)(struct csio_lnode *, enum csio_ln_ev)' to 'csio_sm_state_t' (aka 'void (*)(void *, unsigned int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 1373 | if (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_ready)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/scsi/csiostor/csio_lnode.c:1377:29: error: cast from 'void (*)(struct csio_lnode *, enum csio_ln_ev)' to 'csio_sm_state_t' (aka 'void (*)(void *, unsigned int)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 1377 | if (csio_get_state(ln) == ((csio_sm_state_t)csio_lns_offline)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Move the enum into a shared header so the correct types can be used without the need for casts. Fixes:a3667aaed5("[SCSI] csiostor: Chelsio FCoE offload driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20240213100518.457623-1-arnd@kernel.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.