kernel/arch/s390/include/asm/chsc.h, branch linux-6.2.y

treewide: Replace zero-length arrays with flexible-array members

2022-02-17T13:00:39Z

There is a regular need in the kernel to provide a way to declare having a dynamically sized set of trailing elements in a structure. Kernel code should always use “flexible array members”[1] for these cases. The older style of one-element or zero-length arrays should no longer be used[2]. This code was transformed with the help of Coccinelle: (next-20220214$ spatch --jobs $(getconf _NPROCESSORS_ONLN) --sp-file script.cocci --include-headers --dir . > output.patch) @@ identifier S, member, array; type T1, T2; @@ struct S { ... T1 member; T2 array[ - 0 ]; }; UAPI and wireless changes were intentionally excluded from this patch and will be sent out separately. [1] https://en.wikipedia.org/wiki/Flexible_array_member [2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/78 Reviewed-by: Kees Cook Signed-off-by: Gustavo A. R. Silva

s390/cio: Add new Operation Code OC3 to PNSO

2020-09-15T20:21:46Z

Add support for operation code 3 (OC3) of the Perform-Network-Subchannel-Operations (PNSO) function of the Channel-Subsystem-Call (CHSC) instruction. PNSO provides 2 operation codes: OC0 - BRIDGE_INFO OC3 - ADDR_INFO (new) Extend the function calls to *pnso* to pass the OC and add new response code 0108. Support for OC3 is indicated by a flag in the css_general_characteristics. Signed-off-by: Alexandra Winter Reviewed-by: Julian Wiedmann Reviewed-by: Peter Oberparleiter Reviewed-by: Vineeth Vijayan Signed-off-by: Julian Wiedmann Acked-by: Heiko Carstens Signed-off-by: David S. Miller

s390/cio, s390/qeth: cleanup PNSO CHSC

2020-05-28T10:21:55Z

CHSC3D (PNSO - perform network subchannel operation) is used for OC0 (Store-network-bridging-information) as well as for OC3 (Store-network-address-information). So common fields are renamed from *brinfo* to *pnso*. Also *_bridge_host_* is changed into *_addr_change_*, e.g. qeth_bridge_host_event to qeth_addr_change_event, for the same reasons. The keywords in the card traces are changed accordingly. Remove unused L3 types, as PNSO will only return Layer2 entries. Make PNSO CHSC implementation more consistent with existing API usage: Add new function ccw_device_pnso() to drivers/s390/cio/device_ops.c and the function declaration to arch/s390/include/asm/ccwdev.h, which takes a struct ccw_device * as parameter instead of schid and calls chsc_pnso(). PNSO CHSC has no strict relationship to qdio. So move the calling function from qdio to qeth_l2 and move the necessary structures to a new file arch/s390/include/asm/chsc.h. Do response code evaluation only in chsc_error_from_response() and use return code in all other places. qeth_anset_makerc() was meant to evaluate the PNSO response code, but never did, because pnso_rc was already non-zero. Indentation was corrected in some places. Signed-off-by: Alexandra Winter Reviewed-by: Peter Oberparleiter Reviewed-by: Vineeth Vijayan Reviewed-by: Julian Wiedmann Signed-off-by: Vasily Gorbik

UAPI: (Scripted) Disintegrate arch/s390/include/asm

2012-10-09T08:47:31Z

Signed-off-by: David Howells Acked-by: Arnd Bergmann Acked-by: Thomas Gleixner Acked-by: Michael Kerrisk Acked-by: Paul E. McKenney Acked-by: Dave Jones

s390: add eadm facility bits

2012-09-26T13:44:57Z

Add the eadm facility bits to the css characteristics and move them to a new header. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/comments: unify copyright messages and remove file names

2012-07-20T09:15:04Z

Remove the file name from the comment at top of many files. In most cases the file name was wrong anyway, so it's rather pointless. Also unify the IBM copyright statement. We did have a lot of sightly different statements and wanted to change them one after another whenever a file gets touched. However that never happened. Instead people start to take the old/"wrong" statements to use as a template for new files. So unify all of them in one go. Signed-off-by: Heiko Carstens

[S390] cio: move scsw helper functions to header file

2009-09-11T08:29:36Z

All scsw helper functions are very short and usage of them shouldn't result in function calls. Therefore we move them to a separate header file. Also saves a lot of EXPORT_SYMBOLs. Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

[S390] types: add/fix types.h include in header files

2009-01-09T11:15:06Z

/include/asm/chpid.h:12: include of is preferred over /include/asm/chsc.h:15: found __[us]{8,16,32,64} type without #include /include/asm/cmb.h:28: found __[us]{8,16,32,64} type without #include /include/asm/dasd.h:195: found __[us]{8,16,32,64} type without #include /include/asm/kvm.h:16: include of is preferred over /include/asm/kvm.h:30: found __[us]{8,16,32,64} type without #include /include/asm/qeth.h:24: found __[us]{8,16,32,64} type without #include /include/asm/schid.h:5: found __[us]{8,16,32,64} type without #include /include/asm/swab.h:12: include of is preferred over /include/asm/swab.h:19: found __[us]{8,16,32,64} type without #include Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

[S390] move include/asm-s390 to arch/s390/include/asm

2008-08-01T18:42:05Z

Signed-off-by: Martin Schwidefsky