summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2020-08-03drm/mgag200: Move G200SE's unique id into model-specific dataThomas Zimmermann
The unique revision id is only useful for G200SE devices. Store the value in model-specific data within struct mga_device. While at it, the patch also adds an init helper for the value. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-8-tzimmermann@suse.de
2020-08-03drm/mgag200: Clear <page> field during MM initThomas Zimmermann
The modesetting code initialized the memory-related register CRTCEXT4. Move this code to MM initialization. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-7-tzimmermann@suse.de
2020-08-03drm/mgag200: Set MISC memory flags in mm init codeThomas Zimmermann
The modesetting code initialized several memory-related flags in the MISC register. Move this code to MM initialization. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-6-tzimmermann@suse.de
2020-08-03drm/mgag200: Enable MGA mode during device register initializationThomas Zimmermann
MGA cards can run in traditional VGA mode or an enhanced MGA mode; with the latter being required for KMS. So far, MGA mode was enabled during modesetting. As it's fundamental for device operation, the patch moves it next to the device register setup. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-5-tzimmermann@suse.de
2020-08-03drm/mgag200: Initialize PCI registers early during device setupThomas Zimmermann
So far, PCI option registers were initialized as part of modesetting, which is late in the process. As these registers control fundamental operation, they should be set early. The patch moves the PCI option handling into device register setup, before even the device MMIO memory is being mapped. No functional changes made. Moving the PCI code next to the device-register setup also allows to remove the has_sdram field from struct mga_device. The state is now local to the init helper. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-4-tzimmermann@suse.de
2020-08-03drm/mgag200: Move register initialization into helper functionThomas Zimmermann
The mgag200 driver maps registers into the address space. Move the code into a separate helper function. No functional changes. One small difference is in the handling of SDRAM/SGRAM. MGA devices can come with either SDRAM or SGRAM. So far, the driver checked for SDRAM, which is the common case. The patch moves this code into a separate helper and checks for SGRAM, which is the special case. The test itself is the same as before. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-3-tzimmermann@suse.de
2020-08-03drm/mgag200: Enable caching for SHMEM pagesThomas Zimmermann
SHMEM pages use write-combine caching by default, but can also use the platform's default page caching. Doing so may improve the performance of I/O on the framebuffer. Mgag200's hardware does not access framebuffer pages directly (i.e., via DMA), so enabling caching does not have an effect on consistency of the framebuffer memory or the displayed data. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200730102844.10995-2-tzimmermann@suse.de
2020-08-03Revert "ALSA: hda: call runtime_allow() for all hda controllers"Hui Wang
This reverts commit 9a6418487b56 ("ALSA: hda: call runtime_allow() for all hda controllers"). The reverted patch already introduced some regressions on some machines: - on gemini-lake machines, the error of "azx_get_response timeout" happens in the hda driver. - on the machines with alc662 codec, the audio jack detection doesn't work anymore. Fixes: 9a6418487b56 ("ALSA: hda: call runtime_allow() for all hda controllers") BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=208511 Cc: <stable@vger.kernel.org> Signed-off-by: Hui Wang <hui.wang@canonical.com> Link: https://lore.kernel.org/r/20200803064638.6139-1-hui.wang@canonical.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-08-03drm/ast: Managed device releaseThomas Zimmermann
This turns the ast's device cleanup code into a managed release helper function. Note that the code uses devres helpers. The release function switches the device back to VGA mode and therefore runs during HW device cleanup; not at DRM device cleanup. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-10-tzimmermann@suse.de
2020-08-03drm/ast: Manage release of firmware backup memoryThomas Zimmermann
The ast driver keeps a backup copy of the DP501 encoder's firmware. This patch adds managed release of the allocated memory. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-9-tzimmermann@suse.de
2020-08-03drm/ast: Managed release of ast firmwareThomas Zimmermann
The ast driver loads firmware for the DP501 display encoder. The patch replaces the removal code with a managed release function. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-8-tzimmermann@suse.de
2020-08-03drm/ast: Embed struct drm_device in struct ast_privateThomas Zimmermann
Turns struct ast_private into a subclass of struct drm_device by embedding the latter. This allows for using DRM's managed device allocation. The use of struct drm_device.dev_private is deprecated. The patch converts the last remaining users to to_ast_private(). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-7-tzimmermann@suse.de
2020-08-03drm/ast: Don't use ast->dev if dev is availableThomas Zimmermann
Several places in ast use ast->dev, when a dev pointer is already available within the function. Remove the extra indirection. No functional changes made. This is just a small cleanup before embedding the DRM device instance in struct ast_private. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-6-tzimmermann@suse.de
2020-08-03drm/ast: Replace struct_drm_device.dev_private with to_ast_private()Thomas Zimmermann
The ast code still references dev_private in several place when looking up the ast device structure. Convert the remaining locations to use to_ast_private(). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-5-tzimmermann@suse.de
2020-08-03drm/ast: Replace driver load/unload functions with device create/destroyThomas Zimmermann
The ast driver's load and unload functions are left-overs from when struct drm_driver.load/unload was still in use. The PCI probe helper allocated the DRM device and ran load to initialize it. This patch replaces this code with device create and destroy. The main difference is that the device's create function allocates the DRM device and ast structures in the same place. This will be required for switching ast to managed allocations. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-4-tzimmermann@suse.de
2020-08-03drm/ast: Separate DRM driver from PCI codeThomas Zimmermann
Putting the DRM driver to the top of the file and the PCI code to the bottom makes ast_drv.c more readable. While at it, the patch prefixes file-scope variables with ast_. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-3-tzimmermann@suse.de
2020-08-03drm/ast: Embed CRTC and connector in struct ast_privateThomas Zimmermann
Only single instances of CRTC and connector are supported per device. Embed both in ast's structure and remove the individual memory allocations. DRM's CRTC cleanup helpers replace the rsp. destroy function in ast. While at it, also convert to_ast_connector() to a function. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> Acked-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200730135206.30239-2-tzimmermann@suse.de
2020-08-02md/raid5: Allow degraded raid6 to do rmwChangSyun Peng
Degraded raid6 always do reconstruct-write now. With raid6 xor supported, we can do rmw in degraded raid6. This patch can reduce many read IOs to improve performance. If the failed disk is P, Q or the disk we want to write to, we may need to do reconstruct-write in max degraded raid6. In this situation we can not read enough data from handle_stripe_dirtying() so we have to set force_rcw in handle_stripe_fill() to read all data. Reviewed-by: Alex Wu <alexwu@synology.com> Reviewed-by: BingJing Chang <bingjingc@synology.com> Reviewed-by: Danny Shih <dannyshih@synology.com> Signed-off-by: ChangSyun Peng <allenpeng@synology.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-02md/raid5: Fix Force reconstruct-write io stuck in degraded raid5ChangSyun Peng
In degraded raid5, we need to read parity to do reconstruct-write when data disks fail. However, we can not read parity from handle_stripe_dirtying() in force reconstruct-write mode. Reproducible Steps: 1. Create degraded raid5 mdadm -C /dev/md2 --assume-clean -l5 -n3 /dev/sda2 /dev/sdb2 missing 2. Set rmw_level to 0 echo 0 > /sys/block/md2/md/rmw_level 3. IO to raid5 Now some io may be stuck in raid5. We can use handle_stripe_fill() to read the parity in this situation. Cc: <stable@vger.kernel.org> # v4.4+ Reviewed-by: Alex Wu <alexwu@synology.com> Reviewed-by: BingJing Chang <bingjingc@synology.com> Reviewed-by: Danny Shih <dannyshih@synology.com> Signed-off-by: ChangSyun Peng <allenpeng@synology.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-03Revert "xen/balloon: Fix crash when ballooning on x86 32 bit PAE"Roger Pau Monne
This reverts commit dfd74a1edfaba5864276a2859190a8d242d18952. This has been fixed by commit dca4436d1cf9e0d237c which added the out of bounds check to __add_memory, so that trying to add blocks past MAX_PHYSMEM_BITS will fail. Note the check in the Xen balloon driver was bogus anyway, as it checked the start address of the resource, but it should instead test the end address to assert the whole resource falls below MAX_PHYSMEM_BITS. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: Juergen Gross <jgross@suse.com> Link: https://lore.kernel.org/r/20200727091342.52325-4-roger.pau@citrix.com Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-03xen/balloon: make the balloon wait interruptibleRoger Pau Monne
So it can be killed, or else processes can get hung indefinitely waiting for balloon pages. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200727091342.52325-3-roger.pau@citrix.com Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-03xen/balloon: fix accounting in alloc_xenballooned_pages error pathRoger Pau Monne
target_unpopulated is incremented with nr_pages at the start of the function, but the call to free_xenballooned_pages will only subtract pgno number of pages, and thus the rest need to be subtracted before returning or else accounting will be skewed. Signed-off-by: Roger Pau Monné <roger.pau@citrix.com> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200727091342.52325-2-roger.pau@citrix.com Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-03ALSA: hda/ca0132 - Fix AE-5 microphone selection commands.Connor McAdams
The ca0113 command had the wrong group_id, 0x48 when it should've been 0x30. The front microphone selection should now work. Signed-off-by: Connor McAdams <conmanx360@gmail.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200803002928.8638-3-conmanx360@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-08-03ALSA: hda/ca0132 - Add new quirk ID for Recon3D.Connor McAdams
Add a new quirk ID for the Recon3D, as tested by me. Signed-off-by: Connor McAdams <conmanx360@gmail.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200803002928.8638-2-conmanx360@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-08-03ALSA: hda/ca0132 - Fix ZxR Headphone gain control get value.Connor McAdams
When the ZxR headphone gain control was added, the ca0132_switch_get function was not updated, which meant that the changes to the control state were not saved when entering/exiting alsamixer. Signed-off-by: Connor McAdams <conmanx360@gmail.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200803002928.8638-1-conmanx360@gmail.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
2020-08-03Merge branch 'for-next' into for-linusTakashi Iwai
2020-08-02raid5: don't duplicate code for different paths in handle_stripeGuoqing Jiang
As we can see, R5_LOCKED is set and s.locked is increased whether R5_ReWrite is set or not, so move it to common path. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-02raid5-cache: hold spinlock instead of mutex in r5c_journal_mode_showGuoqing Jiang
Replace mddev_lock with spin_lock to align with other show methods in raid5_attrs. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-02md: print errno in super_writtenGuoqing Jiang
It is better to print errno instead of bi_status. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-02md/raid5: remove the redundant setting of STRIPE_HANDLEGuoqing Jiang
The flag is already set before compare rcw with rmw, so it is not necessary to do it again. Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-02md: register new md sysfs file 'uuid' read-onlySebastian Parschauer
Report the UUID of the MD array in the following format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx This is useful if you don't want to wait for udev to identify array. And it is also easy for script to monitor it with the format. Signed-off-by: Sebastian Parschauer <s.parschauer@gmx.de> [Guoqing: mention the change in md.rst] Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-02md: fix max sectors calculation for super 1.0Xiao Ni
To grow size of super 1.0 raid array, it is necessary to check the device max usable size. Now it uses rdev->sectors for max usable size. If one disk is 500G and the raid device only uses the 100GB of this disk. rdev->sectors can't tell the real max usable size. The max usable size should be dev_size-(superblock_size+bitmap_size+badblock_size). Also, remove unnecessary sb_start update in super_1_rdev_size_change(). Signed-off-by: Xiao Ni <xni@redhat.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-08-03xen: hypercall.h: fix duplicated wordRandy Dunlap
Change the repeated word "as" to "as a". Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Juergen Gross <jgross@suse.com> Cc: xen-devel@lists.xenproject.org Link: https://lore.kernel.org/r/20200726001731.19540-1-rdunlap@infradead.org Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-03xen/gntdev: gntdev.h: drop a duplicated wordRandy Dunlap
Drop the repeated word "of" in a comment. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Juergen Gross <jgross@suse.com> Cc: xen-devel@lists.xenproject.org Link: https://lore.kernel.org/r/20200719003317.21454-1-rdunlap@infradead.org Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-03xen/privcmd: Convert get_user_pages*() to pin_user_pages*()Souptick Joarder
In 2019, we introduced pin_user_pages*() and now we are converting get_user_pages*() to the new API as appropriate. [1] & [2] could be referred for more information. This is case 5 as per document [1]. [1] Documentation/core-api/pin_user_pages.rst [2] "Explicit pinning of user-space pages": https://lwn.net/Articles/807108/ Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Juergen Gross <jgross@suse.com> Reviewed-by: Paul Durrant <paul@xen.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Paul Durrant <xadimgnik@gmail.com> Link: https://lore.kernel.org/r/1594525195-28345-4-git-send-email-jrdr.linux@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-03xen/privcmd: Mark pages as dirtySouptick Joarder
pages need to be marked as dirty before unpinned it in unlock_pages() which was oversight. This is fixed now. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Suggested-by: John Hubbard <jhubbard@nvidia.com> Reviewed-by: Juergen Gross <jgross@suse.com> Reviewed-by: Paul Durrant <paul@xen.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Paul Durrant <xadimgnik@gmail.com> Link: https://lore.kernel.org/r/1594525195-28345-3-git-send-email-jrdr.linux@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-03xen/privcmd: Corrected error handling pathSouptick Joarder
Previously, if lock_pages() end up partially mapping pages, it used to return -ERRNO due to which unlock_pages() have to go through each pages[i] till *nr_pages* to validate them. This can be avoided by passing correct number of partially mapped pages & -ERRNO separately, while returning from lock_pages() due to error. With this fix unlock_pages() doesn't need to validate pages[i] till *nr_pages* for error scenario and few condition checks can be ignored. Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com> Reviewed-by: Juergen Gross <jgross@suse.com> Reviewed-by: Paul Durrant <paul@xen.org> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Paul Durrant <xadimgnik@gmail.com> Link: https://lore.kernel.org/r/1594525195-28345-2-git-send-email-jrdr.linux@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com>
2020-08-02list: add "list_del_init_careful()" to go with "list_empty_careful()"Linus Torvalds
That gives us ordering guarantees around the pair. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-02mm: rewrite wait_on_page_bit_common() logicLinus Torvalds
It turns out that wait_on_page_bit_common() had several problems, ranging from just unfair behavioe due to re-queueing at the end of the wait queue when re-trying, and an outright bug that could result in missed wakeups (but probably never happened in practice). This rewrites the whole logic to avoid both issues, by simply moving the logic to check (and possibly take) the bit lock into the wakeup path instead. That makes everything much more straightforward, and means that we never need to re-queue the wait entry: if we get woken up, we'll be notified through WQ_FLAG_WOKEN, and the wait queue entry will have been removed, and everything will have been done for us. Link: https://lore.kernel.org/lkml/CAHk-=wjJA2Z3kUFb-5s=6+n0qbTs8ELqKFt9B3pH85a8fGD73w@mail.gmail.com/ Link: https://lore.kernel.org/lkml/alpine.LSU.2.11.2007221359450.1017@eggly.anvils/ Reported-by: Oleg Nesterov <oleg@redhat.com> Reported-by: Hugh Dickins <hughd@google.com> Cc: Michal Hocko <mhocko@suse.com> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-02cifs: document and cleanup dfs mountPaulo Alcantara
cifs_mount() for DFS mounts is for a long time way too complex to follow, mostly because it lacks some documentation, does a lot of operations like resolving DFS roots and links, checking for path components, perform failover, crap code, etc. Besides adding some documentation to it, do some cleanup and ensure that the following is implemented and supported: * non-DFS mounts * DFS failover * DFS root mounts - tcon and cifs_sb must contain DFS path (NOT including prefix) - if prefix path, then save it in cifs_sb and it must not be changed * DFS link mounts - tcon and cifs_sb must contain DFS path (including prefix) - if prefix path, then save it in cifs_sb and it may be changed * prevent recursion on broken link referrals (MAX_NESTED_LINKS) * check every path component of the currently resolved target (including prefix), and chase them accordingly * make sure that DFS referrals go through newly resolved root servers Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: only update prefix path of DFS links in cifs_tree_connect()Paulo Alcantara
For DFS root mounts that contain a prefix path, do not change them after failover. E.g., if the user mounts //srvA/root/dir1 and then lost connection to srvA, it will reconnect to //srvB/root/dir1 In case of DFS links, which may resolve to different prefix paths depending on their list of targets, the following must be supported: - mount //srvA/root/link/bar - connect to //srvA/share - set prefix path to "bar" - lost connection to srvA - reconnect to next target: //srvB/share/foo - set new prefix path to "foo/bar" In cifs_tree_connect(), check the server_type field of the cached DFS referral to determine whether or not prefix path should be updated. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: fix double free error on share and prefixColin Ian King
Currently if the call dfs_cache_get_tgt_share fails we cannot fully guarantee that share and prefix are set to NULL and the next iteration of the loop can end up potentially double freeing these pointers. Since the semantics of dfs_cache_get_tgt_share are ambiguous for failure cases with the setting of share and prefix (currently now and the possibly the future), it seems prudent to set the pointers to NULL when the objects are free'd to avoid any double frees. Addresses-Coverity: ("Double free") Fixes: 96296c946a2a ("cifs: handle RESP_GET_DFS_REFERRAL.PathConsumed in reconnect") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
2020-08-02cifs: handle RESP_GET_DFS_REFERRAL.PathConsumed in reconnectPaulo Alcantara
Use PathConsumed field when parsing prefixes of referral paths that either match a cache entry or are a complete prefix path of an existing entry. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: handle empty list of targets in cifs_reconnect()Paulo Alcantara
In case there were no cached DFS referrals in reconn_setup_dfs_targets(), set cifs_sb to NULL prior to calling reconn_set_next_dfs_target() so it would not try to access an empty tgt_list. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: rename reconn_inval_dfs_target()Paulo Alcantara
This function has nothing to do with *invalidation* but setting up the next target server from a cached referral. Rename it to reconn_set_next_dfs_target(). While at it, get rid of some meaningless checks. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: reduce number of referral requests in DFS link lookupsPaulo Alcantara
When looking up the DFS cache with a referral path that has more than two path components, and is a complete prefix of an existing cache entry, do not request another referral and just return the matched entry as specified in MS-DFSC 3.2.5.5 Receiving a Root Referral Request or Link Referral Request. Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: merge __{cifs,smb2}_reconnect[_tcon]() into cifs_tree_connect()Stefan Metzmacher
They were identical execpt to CIFSTCon() vs. SMB2_tcon(). These are also available via ops->tree_connect(). Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz> Reviewed-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: convert to use be32_add_cpu()Qinglang Miao
Convert cpu_to_be32(be32_to_cpu(E1) + E2) to use be32_add_cpu(). Signed-off-by: Qinglang Miao <miaoqinglang@huawei.com> Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: delete duplicated words in header filesRandy Dunlap
Drop repeated words in multiple comments. (be, use, the, See) Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Steve French <sfrench@samba.org> Cc: linux-cifs@vger.kernel.org Cc: samba-technical@lists.samba.org Signed-off-by: Steve French <stfrench@microsoft.com>
2020-08-02cifs: Remove the superfluous breakLiao Pingfang
Remove the superfuous break, as there is a 'return' before it. Signed-off-by: Liao Pingfang <liao.pingfang@zte.com.cn> Signed-off-by: Yi Wang <wang.yi59@zte.com.cn> Signed-off-by: Steve French <stfrench@microsoft.com>
generated by cgit (git 2.34.1) at 2025-09-24 01:12:10 +0000