kernel/linux.git/drivers/scsi/ch.c, branch linux-7.0.y

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

scsi: ch: Convert to SCSI bus methods

2026-01-12T02:31:58+00:00

The SCSI subsystem has implemented dedicated callbacks for probe, remove and shutdown. Make use of them. This fixes a runtime warning about the driver needing to be converted to the bus probe method. Signed-off-by: Uwe Kleine-König Reviewed-by: Bart Van Assche Link: https://patch.msgid.link/b36de11cbc32265a52264da5c813dd6e1abd21fd.1766133330.git.u.kleine-koenig@baylibre.com Signed-off-by: Martin K. Petersen

scsi: core: Pass a struct scsi_driver to scsi_{,un}register_driver()

2026-01-12T02:31:57+00:00

This aligns with what other subsystems do, reduces boilerplate a bit for device drivers and is less error prone. Reviewed-by: Peter Wang Signed-off-by: Uwe Kleine-König Reviewed-by: Bart Van Assche Link: https://patch.msgid.link/ac17fdea58e384cb514c639306d48ce0005820b0.1766133330.git.u.kleine-koenig@baylibre.com Signed-off-by: Martin K. Petersen

scsi: ch: Make ch_sysfs_class constant

2024-03-10T22:15:48+00:00

Since commit 43a7206b0963 ("driver core: class: make class_register() take a const *"), the driver core allows for struct class to be in read-only memory, so move the ch_sysfs_class structure to be declared at build time placing it into read-only memory, instead of having to be dynamically allocated at boot time. Cc: Greg Kroah-Hartman Suggested-by: Greg Kroah-Hartman Signed-off-by: Ricardo B. Marliere Link: https://lore.kernel.org/r/20240302-class_cleanup-scsi-v1-4-b9096b990e27@marliere.net Signed-off-by: Martin K. Petersen

scsi: ch: Have midlayer retry ch_do_scsi() UAs

2024-01-30T02:20:54+00:00

This has ch_do_scsi() have the SCSI midlayer retry UAs instead of driving them itself. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20240123002220.129141-12-michael.christie@oracle.com Acked-by: Christoph Hellwig Signed-off-by: Martin K. Petersen

scsi: ch: Remove unit_attention

2024-01-30T02:20:54+00:00

unit_attention is not used so remove it. Signed-off-by: Mike Christie Link: https://lore.kernel.org/r/20240123002220.129141-11-michael.christie@oracle.com Reviewed-by: Christoph Hellwig Reviewed-by: John Garry Reviewed-by: Martin Wilck Acked-by: Christoph Hellwig Signed-off-by: Martin K. Petersen

scsi: ch: Replace deprecated strncpy() with strscpy()

2023-11-15T14:03:58+00:00

strncpy() is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. These labels get copied out to the user so lets make sure they are NUL-terminated and NUL-padded. vparams is already memset to 0 so we don't need to do any NUL-padding (like what strncpy() is doing). Considering the above, a suitable replacement is strscpy() [2] due to the fact that it guarantees NUL-termination on the destination buffer without unnecessarily NUL-padding. Let's also opt to use the more idiomatic strscpy() usage of: (dest, src, sizeof(dest)) as this more closely ties the destination buffer to the length. Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings [1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt Link: https://lore.kernel.org/r/20231023-strncpy-drivers-scsi-ch-c-v1-1-dc67ba8075a3@google.com Reviewed-by: Kees Cook Signed-off-by: Martin K. Petersen

scsi: replace the fmode_t argument to scsi_ioctl with a simple bool

2023-06-12T14:04:04+00:00

Instead of passing a fmode_t and only checking it for FMODE_WRITE, pass a bool open_for_write to prepare for callers that won't have the fmode_t. Signed-off-by: Christoph Hellwig Reviewed-by: Martin K. Petersen Reviewed-by: Hannes Reinecke Acked-by: Christian Brauner Link: https://lore.kernel.org/r/20230608110258.189493-20-hch@lst.de Signed-off-by: Jens Axboe

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