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2019-08-02staging: rtl8712: r8712_aes_decrypt(): Change return typeNishka Dasgupta
Change return type of r8712_aes_decrypt from u8 to void as its return value is never checked. Modify return statements accordingly. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-9-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: aes_decipher(): Change return typeNishka Dasgupta
Change return type of aes_decipher from sint to void as it always returns _SUCCESS and this value is never used. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-8-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: aes_cipher(): Change return typeNishka Dasgupta
Change return type of aes_cipher from sint to void as it always returns _SUCCESS and its return value is never used. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-7-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: r8712_tkip_decrypt(): Change return typeNishka Dasgupta
Change return type of r8712_tkip_decrypt from u8 to void as the return value is never used. Modify or remove return statements accordingly. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-6-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: r8712_os_recvbuf_resource_free(): Change return typeNishka Dasgupta
Change return type of r8712_os_recvbuf_resource_free from int to void as it always returns _SUCCESS and this return value is never stored, checked or otherwise used. Remove return statement accordingly. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-5-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: r8712_os_recvbuf_resource_alloc(): Change return valuesNishka Dasgupta
Change return values of r8712_os_recvbuf_resource_alloc from _SUCCESS/_FAIL to 0/-ENOMEM respectively. Modify check at call site to check for non-zero return value instead of _FAIL. Thereafter remove variable at call site that stored the return value and perform the check directly. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-4-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: r8712_init_recv_priv(): Change return typeNishka Dasgupta
Change return type of r8712_init_recv_priv from int to void as its return value is never used. Remove return statements accordingly. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-3-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: _r8712_init_recv_priv(): Change return typeNishka Dasgupta
Change return type of _r8712_init_recv_priv as its return value is never checked or used. Modify return statements accordingly. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-2-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8712: r8712_os_recv_resource_alloc(): Change return typeNishka Dasgupta
Change return type of function r8712_os_recv_resource_alloc from int to void as its return value is never used. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802064212.30476-1-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8723bs: Replace hal_btcoex_Initialize()Nishka Dasgupta
Remove hal_btcoex_Initialize as all it does is perform a memset and call EXhalbtcoutsrc_InitlizeVariables. Rename EXhalbtcoutsrc_InitlizeVariables to hal_btcoex_Initialize and add the memset of hal_btcoex_Initialize in order to maintain compatibility with call sites of the latter (EXhalbtcoutsrc is not called anywhere else except in now-removed old hal_btcoex_Initialize). Change return type of new hal_btcoex_Initialize from u8 to void and remove its return statement as the return value of hal_btcoex_Initialize is never used. Change the type of function argument at call site to match the function parameter of new hal_btcoex_Initialize. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802062444.30384-4-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8723bs: Change return type of hal_btcoex_IsLpsOn()Nishka Dasgupta
Change return type of hal_btcoex_IsLpsOn from u8 to bool as the function only returns boolean values. Modify a comparison of a boolean value to false to instead check that boolean value directly. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802062444.30384-3-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8723bs: Change return type of hal_btcoex_IsBtControlLps()Nishka Dasgupta
Change return type of hal_btcoex_IsBtControlLps from u8 to bool as it only returns boolean values. Change comparison to false within this function; check the boolean variable directly instead. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802062444.30384-2-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: rtl8723bs: Change return type of hal_btcoex_IsBtExist()Nishka Dasgupta
Change return type of hal_btcoex_IsBtExist from u8 to bool as its only possible return values are true and false. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802062444.30384-1-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02s390/zcrypt: adjust switch fall through comments for -Wimplicit-fallthroughVasily Gorbik
Silence the following warnings when built with -Wimplicit-fallthrough=3 enabled by default since 5.3-rc2: In file included from ./include/linux/preempt.h:11, from ./include/linux/spinlock.h:51, from ./include/linux/mmzone.h:8, from ./include/linux/gfp.h:6, from ./include/linux/slab.h:15, from drivers/s390/crypto/ap_queue.c:13: drivers/s390/crypto/ap_queue.c: In function 'ap_sm_recv': ./include/linux/list.h:577:2: warning: this statement may fall through [-Wimplicit-fallthrough=] 577 | for (pos = list_first_entry(head, typeof(*pos), member); \ | ^~~ drivers/s390/crypto/ap_queue.c:147:3: note: in expansion of macro 'list_for_each_entry' 147 | list_for_each_entry(ap_msg, &aq->pendingq, list) { | ^~~~~~~~~~~~~~~~~~~ drivers/s390/crypto/ap_queue.c:155:2: note: here 155 | case AP_RESPONSE_NO_PENDING_REPLY: | ^~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_ep11_xcrb': drivers/s390/crypto/zcrypt_msgtype6.c:871:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 871 | if (msg->cprbx.cprb_ver_id == 0x04) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:874:2: note: here 874 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_rng': drivers/s390/crypto/zcrypt_msgtype6.c:901:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 901 | if (msg->cprbx.cprb_ver_id == 0x02) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:907:2: note: here 907 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_xcrb': drivers/s390/crypto/zcrypt_msgtype6.c:838:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 838 | if (msg->cprbx.cprb_ver_id == 0x02) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:844:2: note: here 844 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ drivers/s390/crypto/zcrypt_msgtype6.c: In function 'convert_response_ica': drivers/s390/crypto/zcrypt_msgtype6.c:801:6: warning: this statement may fall through [-Wimplicit-fallthrough=] 801 | if (msg->cprbx.cprb_ver_id == 0x02) | ^ drivers/s390/crypto/zcrypt_msgtype6.c:808:2: note: here 808 | default: /* Unknown response type, this should NEVER EVER happen */ | ^~~~~~~ Acked-by: Patrick Steuer <patrick.steuer@de.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2019-08-02staging: wilc1000: remove unused functionAdham Abozaeid
function wilc_resolve_disconnect_aberration isn't referenced, so removing it Signed-off-by: Adham Abozaeid <adham.abozaeid@microchip.com> Link: https://lore.kernel.org/r/20190801200909.12605-3-adham.abozaeid@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02can: peak_usb: pcan_usb_pro: Fix info-leaks to USB devicesTomas Bortoli
Uninitialized Kernel memory can leak to USB devices. Fix by using kzalloc() instead of kmalloc() on the affected buffers. Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com> Reported-by: syzbot+d6a5a1a3657b596ef132@syzkaller.appspotmail.com Fixes: f14e22435a27 ("net: can: peak_usb: Do not do dma on the stack") Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-02can: peak_usb: pcan_usb_fd: Fix info-leaks to USB devicesTomas Bortoli
Uninitialized Kernel memory can leak to USB devices. Fix by using kzalloc() instead of kmalloc() on the affected buffers. Signed-off-by: Tomas Bortoli <tomasbortoli@gmail.com> Reported-by: syzbot+513e4d0985298538bf9b@syzkaller.appspotmail.com Fixes: 0a25e1f4f185 ("can: peak_usb: add support for PEAK new CANFD USB adapters") Cc: linux-stable <stable@vger.kernel.org> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-02staging: wilc1000: merge drv_handle and operation_mode widsAdham Abozaeid
wilc_set_wfi_drv_handler and wilc_set_operation_mode sends the same parameters to the FW, so it's better to combine them together. Kept wilc_set_wfi_drv_handler implementation since it sends all the required parameters, and renamed it to wilc_set_operation_mode to be more descriptive. Signed-off-by: Adham Abozaeid <adham.abozaeid@microchip.com> Link: https://lore.kernel.org/r/20190801200909.12605-2-adham.abozaeid@microchip.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: wlan-ng: Remove function prism2mib_excludeunencrypted()Nishka Dasgupta
Remove function prism2mib_excludeunencrypted as all it does is call prism2mib_flag. Modify call sites accordingly. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com> Link: https://lore.kernel.org/r/20190802060913.30241-1-nishkadg.linux@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: bcm2835-camera: Spelling s/conencted/connected/Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20190731134207.18549-1-geert+renesas@glider.be Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: fsl-dpaa2/ethsw: Remove useless set memory to zero use memset()Wei Yongjun
The memory return by kzalloc() has already be set to zero, so remove useless memset(0). Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Link: https://lore.kernel.org/r/20190802013149.80952-1-weiyongjun1@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: update KconfigGao Xiang
Keep in line with erofs-outofstaging patchset: - turn on CONFIG_EROFS_FS_ZIP by default; - turn on CONFIG_EROFS_FS_SECURITY by default suggested by David; - update Kconfig description. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-23-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: update super.cGao Xiang
Keep in line with erofs-outofstaging patchset: - "Chao Yu" is most commonly used in Linux community; - quoted string split across lines. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-22-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: tidy up utils.cGao Xiang
Keep in line with erofs-outofstaging patchset: - Update comments in erofs_try_to_release_workgroup; - code style cleanup. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-21-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: turn cache strategies into mount optionsGao Xiang
Kill all kconfig cache strategies and turn them into mount options "cache_strategy={disable|readahead|readaround}". As the first step, cached pages can still be usable after cache is disabled by remounting, and these pages will be fallen out over time, which can be refined in the later version if some requirement is needed. Update related document as well. Suggested-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-20-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: remove clusterbits in sbiGao Xiang
clustersize can now be set on per-file basis rather than per-filesystem basis. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-19-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: tidy up decompression frontendGao Xiang
Although this patch has an amount of changes, it is hard to separate into smaller patches. Most changes are due to structure renaming for better understand and straightforward, z_erofs_vle_workgroup to z_erofs_pcluster since it represents a physical cluster; z_erofs_vle_work to z_erofs_collection since it represents a collection of logical pages; z_erofs_vle_work_builder to z_erofs_collector since it's used to fill z_erofs_{pcluster,collection}. struct z_erofs_vle_work_finder has no extra use compared with struct z_erofs_collector, delete it. FULL_LENGTH bit is integrated into .length of pcluster so that it can be updated with the corresponding length change in atomic. Minor, add comments for better description. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-18-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: remove redundant braces in inode.cGao Xiang
Remove redundant braces in inode.c since these are all single statements. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-17-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: tidy up zpvec.hGao Xiang
- use shorter function names: z_erofs_pagevec_enqueue and z_erofs_pagevec_dequeue; - minor code cleanup. In order to keep in line with erofs-outofstaging patchset. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-16-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: kill CONFIG_EROFS_FS_USE_VM_MAP_RAMGao Xiang
Turn into a module parameter ("use_vmap") as it can be set at runtime. Suggested-by: David Sterba <dsterba@suse.cz> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-15-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: refine erofs_allocpage()Gao Xiang
remove duplicated code in decompressor by introducing failable erofs_allocpage(). Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-14-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: drop __GFP_NOFAIL for managed inodeGao Xiang
For historical reasons, __GFP_NOFAIL was set for managed inode. It's no need using that since EROFS can handle it properly. Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-13-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: kill all failure handling in fill_super()Gao Xiang
.kill_sb() will do that instead in order to remove duplicated code. Note that the initialzation of managed_cache is now moved after s_root is assigned since it's more preferred to iput() in .put_super() and all inodes should be evicted before the end of generic_shutdown_super(sb). Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-12-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: kill sbi->dev_nameGao Xiang
As Al said, "the only use of sbi->dev_name is debugging printks and all of those have sb->s_id available, with device name stored in there. Which makes the whole thing bloody weird". sbi->dev_name was used for our debugging use and it's better to just use s_id in community and delete the whole erofs_mount_private stuff. Suggested-by: Al Viro <viro@zeniv.linux.org.uk> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-11-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: clean up shrinker stuffsGao Xiang
- rename erofs_register_super / erofs_unregister_super to erofs_shrinker_register / erofs_shrinker_unregister; - fold the only erofs_shrink_workstation external call to erofs_shrinker_unregister; - localize erofs_shrink_workstation; - localize erofs_shrinker_info by introducing erofs_init_shrinker and erofs_exit_shrinker. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-10-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: kill CONFIG_EROFS_FS_IO_MAX_RETRIESGao Xiang
CONFIG_EROFS_FS_IO_MAX_RETRIES seems a runtime setting and users have no idea about the change in behaviour. Let's remove the setting currently and could turn it into a module parameter if it's really needed. Suggested-by: David Sterba <dsterba@suse.cz> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-9-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: remove redundant #include "internal.h"Gao Xiang
Because #include "internal.h" is included in xattr.h Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-8-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: clean up internal.hGao Xiang
Tidy up relative order of variables / declarations in internal.h, move some local static functions out into other files and add tags at the end of #endif acrossing several lines. No logic change. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-7-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: sunset erofs_workstn_{lock,unlock}Gao Xiang
It was used for Linux backward compatibility, and no use for upstream kernel. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-6-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: keep up erofs_fs.h with erofs-outofstaging patchsetGao Xiang
The main change is to reserve all checksums except for superblock, since it's more useful to do block-based verity for read-only fs. Some comments change as well, which is minor. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-5-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: fix dummy functions erofs_{get, list}xattrGao Xiang
dummy functions erofs_{get,list}xattr should be inlined without xattr enabled. Signed-off-by: Yue Hu <zbestahu@gmail.com> [ Gao Xiang : this patch was "staging: erofs: remove needless dummy functions of erofs_{get,list}xattr. "] Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-4-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: rename source files for better understandingGao Xiang
Keep in line with erofs-outofstaging patchset as well, see https://lore.kernel.org/linux-fsdevel/20190725095658.155779-1-gaoxiang25@huawei.com/ Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-3-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02staging: erofs: update source file headersGao Xiang
- Use the correct style for all SPDX License Identifiers; - Get rid of the unnecessary license boilerplate; - Use "GPL-2.0-only" instead of "GPL-2.0" suggested-by Stephen. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Gao Xiang <gaoxiang25@huawei.com> Link: https://lore.kernel.org/r/20190731155752.210602-2-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-08-02can: peak_usb: force the string buffer NULL-terminatedWang Xiayang
strncpy() does not ensure NULL-termination when the input string size equals to the destination buffer size IFNAMSIZ. The output string is passed to dev_info() which relies on the NULL-termination. Use strlcpy() instead. This issue is identified by a Coccinelle script. Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-02can: sja1000: force the string buffer NULL-terminatedWang Xiayang
strncpy() does not ensure NULL-termination when the input string size equals to the destination buffer size IFNAMSIZ. The output string 'name' is passed to dev_info which relies on NULL-termination. Use strlcpy() instead. This issue is identified by a Coccinelle script. Signed-off-by: Wang Xiayang <xywang.sjtu@sjtu.edu.cn> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2019-08-02spi: pxa2xx: Add support for Intel Tiger LakeJarkko Nikula
Intel Tiger Lake -LP LPSS SPI controller is otherwise similar than Cannon Lake but has more controllers and up to two chip selects per controller. Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Link: https://lore.kernel.org/r/20190801134901.12635-1-jarkko.nikula@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
2019-08-02arm64: Make debug exception handlers visible from RCUMasami Hiramatsu
Make debug exceptions visible from RCU so that synchronize_rcu() correctly track the debug exception handler. This also introduces sanity checks for user-mode exceptions as same as x86's ist_enter()/ist_exit(). The debug exception can interrupt in idle task. For example, it warns if we put a kprobe on a function called from idle task as below. The warning message showed that the rcu_read_lock() caused this problem. But actually, this means the RCU is lost the context which is already in NMI/IRQ. /sys/kernel/debug/tracing # echo p default_idle_call >> kprobe_events /sys/kernel/debug/tracing # echo 1 > events/kprobes/enable /sys/kernel/debug/tracing # [ 135.122237] [ 135.125035] ============================= [ 135.125310] WARNING: suspicious RCU usage [ 135.125581] 5.2.0-08445-g9187c508bdc7 #20 Not tainted [ 135.125904] ----------------------------- [ 135.126205] include/linux/rcupdate.h:594 rcu_read_lock() used illegally while idle! [ 135.126839] [ 135.126839] other info that might help us debug this: [ 135.126839] [ 135.127410] [ 135.127410] RCU used illegally from idle CPU! [ 135.127410] rcu_scheduler_active = 2, debug_locks = 1 [ 135.128114] RCU used illegally from extended quiescent state! [ 135.128555] 1 lock held by swapper/0/0: [ 135.128944] #0: (____ptrval____) (rcu_read_lock){....}, at: call_break_hook+0x0/0x178 [ 135.130499] [ 135.130499] stack backtrace: [ 135.131192] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.2.0-08445-g9187c508bdc7 #20 [ 135.131841] Hardware name: linux,dummy-virt (DT) [ 135.132224] Call trace: [ 135.132491] dump_backtrace+0x0/0x140 [ 135.132806] show_stack+0x24/0x30 [ 135.133133] dump_stack+0xc4/0x10c [ 135.133726] lockdep_rcu_suspicious+0xf8/0x108 [ 135.134171] call_break_hook+0x170/0x178 [ 135.134486] brk_handler+0x28/0x68 [ 135.134792] do_debug_exception+0x90/0x150 [ 135.135051] el1_dbg+0x18/0x8c [ 135.135260] default_idle_call+0x0/0x44 [ 135.135516] cpu_startup_entry+0x2c/0x30 [ 135.135815] rest_init+0x1b0/0x280 [ 135.136044] arch_call_rest_init+0x14/0x1c [ 135.136305] start_kernel+0x4d4/0x500 [ 135.136597] So make debug exception visible to RCU can fix this warning. Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Acked-by: Paul E. McKenney <paulmck@linux.ibm.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Will Deacon <will@kernel.org>
2019-08-02arm64: kprobes: Recover pstate.D in single-step exception handlerMasami Hiramatsu
kprobes manipulates the interrupted PSTATE for single step, and doesn't restore it. Thus, if we put a kprobe where the pstate.D (debug) masked, the mask will be cleared after the kprobe hits. Moreover, in the most complicated case, this can lead a kernel crash with below message when a nested kprobe hits. [ 152.118921] Unexpected kernel single-step exception at EL1 When the 1st kprobe hits, do_debug_exception() will be called. At this point, debug exception (= pstate.D) must be masked (=1). But if another kprobes hits before single-step of the first kprobe (e.g. inside user pre_handler), it unmask the debug exception (pstate.D = 0) and return. Then, when the 1st kprobe setting up single-step, it saves current DAIF, mask DAIF, enable single-step, and restore DAIF. However, since "D" flag in DAIF is cleared by the 2nd kprobe, the single-step exception happens soon after restoring DAIF. This has been introduced by commit 7419333fa15e ("arm64: kprobe: Always clear pstate.D in breakpoint exception handler") To solve this issue, this stores all DAIF bits and restore it after single stepping. Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Fixes: 7419333fa15e ("arm64: kprobe: Always clear pstate.D in breakpoint exception handler") Reviewed-by: James Morse <james.morse@arm.com> Tested-by: James Morse <james.morse@arm.com> Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by: Will Deacon <will@kernel.org>
2019-08-02Merge tag 'drm-intel-fixes-2019-08-02' of ↵Daniel Vetter
git://anongit.freedesktop.org/drm/drm-intel into drm-fixes drm/i915 fixes for v5.3-rc3: - GVT fixes - Fix TBT aux powerwell - Fix PSR2 training pattern duration - Fix memory leak in runtime wakeref tracking - Fix ICL memory bandwidth issue preventing planes from being enabled - Fix OA mux configuration delays for accurate performance data - Fix VLV/CHV DP audio cdclk frequency requirements - Fix register whitelisting to fix a number of GL & Vulkan CTS tests - Fix ICL perf register offsets - Fix Gen11 Sampler Prefetch workaround, impacting dEQP tests - Fix various gen2 tracepoints - A number of GEM locking fixes addressing lockdep issues - Fix idle engine reset, recover only active engines - Fix incorrect MCR programming Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> From: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/87d0hnncgo.fsf@intel.com
2019-08-02drm/exynos: fix missing decrement of retry counterColin Ian King
Currently the retry counter is not being decremented, leading to a potential infinite spin if the scalar_reads don't change state. Addresses-Coverity: ("Infinite loop") Fixes: 280e54c9f614 ("drm/exynos: scaler: Reset hardware before starting the operation") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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