linux/drivers/misc/mic/scif, branch master

misc: mic: remove the MIC drivers

2020-10-28T18:12:03Z

This patch removes the MIC drivers from the kernel tree since the corresponding devices have been discontinued. Removing the dma and char-misc changes in one patch and merging via the char-misc tree is best to avoid any potential build breakage. Cc: Nikhil Rao Reviewed-by: Ashutosh Dixit Signed-off-by: Sudeep Dutt Acked-By: Vinod Koul Reviewed-by: Sherry Sun Link: https://lore.kernel.org/r/8c1443136563de34699d2c084df478181c205db4.1603854416.git.sudeep.dutt@intel.com Signed-off-by: Greg Kroah-Hartman

misc: mic: drop double zeroing

2020-09-30T11:53:16Z

sg_init_table zeroes its first argument, so the allocation of that argument doesn't have to. the semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // @@ expression x,n,flags; @@ x = - kcalloc + kmalloc_array (n,sizeof(struct scatterlist),flags) ... sg_init_table(x,n) // Signed-off-by: Julia Lawall Link: https://lore.kernel.org/r/1600601186-7420-14-git-send-email-Julia.Lawall@inria.fr Signed-off-by: Greg Kroah-Hartman

misc: mic: scif: Fix error handling path

2020-09-22T16:53:47Z

Inside __scif_pin_pages(), when map_flags != SCIF_MAP_KERNEL it will call pin_user_pages_fast() to map nr_pages. However, pin_user_pages_fast() might fail with a return value -ERRNO. The return value is stored in pinned_pages->nr_pages. which in turn is passed to unpin_user_pages(), which expects pinned_pages->nr_pages >=0, else disaster. Fix this by assigning pinned_pages->nr_pages to 0 if pin_user_pages_fast() returns -ERRNO. Fixes: ba612aa8b487 ("misc: mic: SCIF memory registration and unregistration") Cc: John Hubbard Cc: Ira Weiny Cc: Dan Carpenter Reviewed-by: John Hubbard Signed-off-by: Souptick Joarder Link: https://lore.kernel.org/r/1600570295-29546-1-git-send-email-jrdr.linux@gmail.com Signed-off-by: Greg Kroah-Hartman

treewide: Use fallthrough pseudo-keyword

2020-08-23T22:36:59Z

Replace the existing /* fall through */ comments and its variants with the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary fall-through markings when it is the case. [1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through Signed-off-by: Gustavo A. R. Silva

misc: mic: scif: scif_rma: Repair a bunch of kerneldoc issues

2020-07-01T13:08:04Z

Firstly, for some reason documentation of all 'scifdev' arguments are missing, so apply those. Also remove 2 descriptions of 'ep' which appear to document non-existent function arguments. drivers/misc/mic/scif/scif_rma.c:468: warning: Function parameter or member 'scifdev' not described in 'scif_create_remote_window' drivers/misc/mic/scif/scif_rma.c:468: warning: Excess function parameter 'ep' description in 'scif_create_remote_window' drivers/misc/mic/scif/scif_rma.c:510: warning: Excess function parameter 'ep' description in 'scif_destroy_remote_window' drivers/misc/mic/scif/scif_rma.c:1045: warning: Function parameter or member 'scifdev' not described in 'scif_alloc_req' drivers/misc/mic/scif/scif_rma.c:1080: warning: Function parameter or member 'scifdev' not described in 'scif_alloc_gnt_rej' drivers/misc/mic/scif/scif_rma.c:1104: warning: Function parameter or member 'scifdev' not described in 'scif_free_virt' drivers/misc/mic/scif/scif_rma.c:1142: warning: Function parameter or member 'scifdev' not described in 'scif_recv_reg' drivers/misc/mic/scif/scif_rma.c:1178: warning: Function parameter or member 'scifdev' not described in 'scif_recv_unreg' drivers/misc/mic/scif/scif_rma.c:1243: warning: Function parameter or member 'scifdev' not described in 'scif_recv_reg_ack' drivers/misc/mic/scif/scif_rma.c:1262: warning: Function parameter or member 'scifdev' not described in 'scif_recv_reg_nack' drivers/misc/mic/scif/scif_rma.c:1280: warning: Function parameter or member 'scifdev' not described in 'scif_recv_unreg_ack' drivers/misc/mic/scif/scif_rma.c:1299: warning: Function parameter or member 'scifdev' not described in 'scif_recv_unreg_nack' Cc: Sudeep Dutt Cc: Ashutosh Dixit Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200701083118.45744-26-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: mic: scif: scif_fence: Fix a bunch of different documentation issues

2020-07-01T13:08:04Z

Firstly add missing descriptions for every use of 'scifdev', then correct incorrect formatting of existing function argument descriptions changing to the expected format of '@.*: ', finally add missing description for function argument 'mark'. Fixes the following W=1 warnings: drivers/misc/mic/scif/scif_fence.c:19: warning: Function parameter or member 'scifdev' not described in 'scif_recv_mark' drivers/misc/mic/scif/scif_fence.c:41: warning: Function parameter or member 'scifdev' not described in 'scif_recv_mark_resp' drivers/misc/mic/scif/scif_fence.c:64: warning: Function parameter or member 'scifdev' not described in 'scif_recv_wait' drivers/misc/mic/scif/scif_fence.c:101: warning: Function parameter or member 'scifdev' not described in 'scif_recv_wait_resp' drivers/misc/mic/scif/scif_fence.c:122: warning: Function parameter or member 'scifdev' not described in 'scif_recv_sig_local' drivers/misc/mic/scif/scif_fence.c:143: warning: Function parameter or member 'scifdev' not described in 'scif_recv_sig_remote' drivers/misc/mic/scif/scif_fence.c:164: warning: Function parameter or member 'scifdev' not described in 'scif_recv_sig_resp' drivers/misc/mic/scif/scif_fence.c:515: warning: Function parameter or member 'epd' not described in 'scif_send_fence_signal' drivers/misc/mic/scif/scif_fence.c:515: warning: Function parameter or member 'roff' not described in 'scif_send_fence_signal' drivers/misc/mic/scif/scif_fence.c:515: warning: Function parameter or member 'rval' not described in 'scif_send_fence_signal' drivers/misc/mic/scif/scif_fence.c:515: warning: Function parameter or member 'loff' not described in 'scif_send_fence_signal' drivers/misc/mic/scif/scif_fence.c:515: warning: Function parameter or member 'lval' not described in 'scif_send_fence_signal' drivers/misc/mic/scif/scif_fence.c:515: warning: Function parameter or member 'flags' not described in 'scif_send_fence_signal' Cc: Sudeep Dutt Cc: Ashutosh Dixit Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200701083118.45744-25-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: mic: scif: scif_dma: Fix a couple of kerneldoc issues

2020-07-01T13:08:04Z

Firstly demote scif_rma_destroy_tcw()'s header to a standard comment as no attempt has been made to document any of the function arguments. Secondly, provide missing description for 'prot' for scif_register_temp(). Fixes the following W=1 kernel build warnings: drivers/misc/mic/scif/scif_dma.c:110: warning: Function parameter or member 'mmn' not described in '__scif_rma_destroy_tcw' drivers/misc/mic/scif/scif_dma.c:110: warning: Function parameter or member 'start' not described in '__scif_rma_destroy_tcw' drivers/misc/mic/scif/scif_dma.c:110: warning: Function parameter or member 'len' not described in '__scif_rma_destroy_tcw' drivers/misc/mic/scif/scif_dma.c:344: warning: Function parameter or member 'prot' not described in 'scif_register_temp' Cc: Sudeep Dutt Cc: Ashutosh Dixit Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200701083118.45744-24-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: mic: scif: scif_nm: Supply various kerneldoc fix-ups

2020-07-01T13:08:04Z

Includes; missing descriptions for function args, the promotion of obvious kerneldoc headers and the mis-formatting of existing argument descriptions. Fixes the following W=1 kernel build warnings: drivers/misc/mic/scif/scif_nm.c:19: warning: Function parameter or member 'node' not described in 'scif_invalidate_ep' drivers/misc/mic/scif/scif_nm.c:173: warning: Function parameter or member 'node_id' not described in 'scif_disconnect_node' Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200701083118.45744-23-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: mic: scif: scif_nodeqp: Fix a bunch of kerneldoc issues

2020-07-01T13:08:04Z

Includes; missing function argument documentation, misnamed argument tags, the promotion of obvious kerneldoc header candidates and an ordering issue (functions must follow the kerneldoc which describes them). Fixes the following W=1 kernel build issues: drivers/misc/mic/scif/scif_nodeqp.c:452: warning: Function parameter or member 'scifdev' not described in 'scif_node_connect' drivers/misc/mic/scif/scif_nodeqp.c:730: warning: Function parameter or member 'unused' not described in 'scif_exit' drivers/misc/mic/scif/scif_nodeqp.c:730: warning: Excess function parameter 'msg' description in 'scif_exit' drivers/misc/mic/scif/scif_nodeqp.c:748: warning: Function parameter or member 'unused' not described in 'scif_exit_ack' drivers/misc/mic/scif/scif_nodeqp.c:748: warning: Excess function parameter 'msg' description in 'scif_exit_ack' drivers/misc/mic/scif/scif_nodeqp.c:939: warning: Function parameter or member 'scifdev' not described in 'scif_node_add_nack' drivers/misc/mic/scif/scif_nodeqp.c:988: warning: Function parameter or member 'scifdev' not described in 'scif_get_node_info_resp' drivers/misc/mic/scif/scif_nodeqp.c:1070: warning: cannot understand function prototype: 'int scif_max_msg_id = SCIF_MAX_MSG; ' drivers/misc/mic/scif/scif_nodeqp.c:1129: warning: Function parameter or member 'unused' not described in 'scif_loopb_wq_handler' drivers/misc/mic/scif/scif_nodeqp.c:1129: warning: Excess function parameter 'work' description in 'scif_loopb_wq_handler' Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200701083118.45744-22-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

misc: mic: scif: scif_epd: Describe missing 'scifdev' argument(s)

2020-07-01T13:08:04Z

For some reason (copy 'n' paste error?) the passed in pointers to 'struct scif_dev scifdev' weren't described throughout the source file. Change that. Fixes the following W=1 kernel build warning(s): drivers/misc/mic/scif/scif_epd.c:120: warning: Function parameter or member 'scifdev' not described in 'scif_cnctreq' drivers/misc/mic/scif/scif_epd.c:166: warning: Function parameter or member 'scifdev' not described in 'scif_cnctgnt' drivers/misc/mic/scif/scif_epd.c:191: warning: Function parameter or member 'scifdev' not described in 'scif_cnctgnt_ack' drivers/misc/mic/scif/scif_epd.c:213: warning: Function parameter or member 'scifdev' not described in 'scif_cnctgnt_nack' drivers/misc/mic/scif/scif_epd.c:230: warning: Function parameter or member 'scifdev' not described in 'scif_cnctrej' drivers/misc/mic/scif/scif_epd.c:255: warning: Function parameter or member 'scifdev' not described in 'scif_discnct' drivers/misc/mic/scif/scif_epd.c:309: warning: Function parameter or member 'scifdev' not described in 'scif_discnt_ack' drivers/misc/mic/scif/scif_epd.c:325: warning: Function parameter or member 'scifdev' not described in 'scif_clientsend' drivers/misc/mic/scif/scif_epd.c:341: warning: Function parameter or member 'scifdev' not described in 'scif_clientrcvd' Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200701083118.45744-21-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman