user/sven/linux.git/drivers/misc/mic, branch v5.9.8

misc: vop: add round_up(x,4) for vring_size to avoid kernel panic

2020-10-29T09:12:13Z

[ Upstream commit cc1a2679865a94b83804822996eed010a50a7c1d ] Since struct _mic_vring_info and vring are allocated together and follow vring, if the vring_size() is not four bytes aligned, which will cause the start address of struct _mic_vring_info is not four byte aligned. For example, when vring entries is 128, the vring_size() will be 5126 bytes. The _mic_vring_info struct layout in ddr looks like: 0x90002400: 00000000 00390000 EE010000 0000C0FF Here 0x39 is the avail_idx member, and 0xC0FFEE01 is the magic member. When EP use ioread32(magic) to reads the magic in RC's share memory, it will cause kernel panic on ARM64 platform due to the cross-byte io read. Here read magic in user space use le32toh(vr0->info->magic) will meet the same issue. So add round_up(x,4) for vring_size, then the struct _mic_vring_info will store in this way: 0x90002400: 00000000 00000000 00000039 C0FFEE01 Which will avoid kernel panic when read magic in struct _mic_vring_info. Signed-off-by: Sherry Sun Signed-off-by: Joakim Zhang Link: https://lore.kernel.org/r/20200929091106.24624-4-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

mic: vop: copy data to kernel space then write to io memory

2020-10-29T09:12:13Z

[ Upstream commit 675f0ad4046946e80412896436164d172cd92238 ] Read and write io memory should address align on ARCH ARM. Change to use memcpy_toio to avoid kernel panic caused by the address un-align issue. Signed-off-by: Sherry Sun Signed-off-by: Joakim Zhang Link: https://lore.kernel.org/r/20200929091106.24624-5-sherry.sun@nxp.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

misc: mic: scif: Fix error handling path

2020-10-29T09:11:26Z

[ Upstream commit a81072a9c0ae734b7889929b0bc070fe3f353f0e ] 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 Signed-off-by: Sasha Levin

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

Merge tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2020-08-05T18:43:47Z

Pull char/misc driver updates from Greg KH: "Here is the large set of char and misc and other driver subsystem patches for 5.9-rc1. Lots of new driver submissions in here, and cleanups and features for existing drivers. Highlights are: - habanalabs driver updates - coresight driver updates - nvmem driver updates - huge number of "W=1" build warning cleanups from Lee Jones - dyndbg updates - virtbox driver fixes and updates - soundwire driver updates - mei driver updates - phy driver updates - fpga driver updates - lots of smaller individual misc/char driver cleanups and fixes Full details are in the shortlog. All of these have been in linux-next with no reported issues" * tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (322 commits) habanalabs: remove unused but set variable 'ctx_asid' nvmem: qcom-spmi-sdam: Enable multiple devices dt-bindings: nvmem: SID: add binding for A100's SID controller nvmem: update Kconfig description nvmem: qfprom: Add fuse blowing support dt-bindings: nvmem: Add properties needed for blowing fuses dt-bindings: nvmem: qfprom: Convert to yaml nvmem: qfprom: use NVMEM_DEVID_AUTO for multiple instances nvmem: core: add support to auto devid nvmem: core: Add nvmem_cell_read_u8() nvmem: core: Grammar fixes for help text nvmem: sc27xx: add sc2730 efuse support nvmem: Enforce nvmem stride in the sysfs interface MAINTAINERS: Add git tree for NVMEM FRAMEWORK nvmem: sprd: Fix return value of sprd_efuse_probe() drivers: android: Fix the SPDX comment style drivers: android: Fix a variable declaration coding style issue drivers: android: Remove braces for a single statement if-else block drivers: android: Remove the use of else after return drivers: android: Fix a variable declaration coding style issue ...

dma-mapping: make support for dma ops optional

2020-07-19T07:29:23Z

Avoid the overhead of the dma ops support for tiny builds that only use the direct mapping. Signed-off-by: Christoph Hellwig Tested-by: Alexey Kardashevskiy Reviewed-by: Alexey Kardashevskiy

vop: sparse warning fixup

2020-07-10T12:58:00Z

vop_dc_to_vdev dropped an __iomem tag on its argument, causing a sparse warning. Fix it up. Signed-off-by: Michael S. Tsirkin Link: https://lore.kernel.org/r/20200710113447.427927-1-mst@redhat.com Signed-off-by: Greg Kroah-Hartman

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