- 21 Jan, 2020 10 commits
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Bean Huo authored
Add one new parameter max_lu_supported in struct ufs_dev_info, which will be used to express exactly how many general LUs being supported by UFS device, and initialize it during booting stage. This patch also adds a new function ufshcd_device_geo_params_init() for initialization of UFS device geometry descriptor related parameters. Link: https://lore.kernel.org/r/20200120130820.1737-8-huobean@gmail.comReviewed-by:
Asutosh Das <asutoshd@codeaurora.org> Reviewed-by:
Alim Akhtar <alim.akhtar@samsung.com> Signed-off-by:
Bean Huo <beanhuo@micron.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Bean Huo authored
Without variable is_init_prefetch, the current logic can guarantee ufshcd_init_icc_levels() will execute only once, delete it now. Link: https://lore.kernel.org/r/20200120130820.1737-7-huobean@gmail.comReviewed-by:
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Bean Huo authored
Delete ufshcd_read_power_desc() and ufshcd_read_device_desc(), directly inline ufshcd_read_desc() into its callers. Link: https://lore.kernel.org/r/20200120130820.1737-6-huobean@gmail.comReviewed-by:
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Bean Huo authored
ufshcd_get_max_pwr_mode() only need to be called once while booting, take it out from ufshcd_probe_hba() and inline into ufshcd_device_params_init(). Link: https://lore.kernel.org/r/20200120130820.1737-5-huobean@gmail.comReviewed-by:
Stanley Chu <stanley.chu@mediatek.com> Reviewed-by:
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Bean Huo authored
This patch has two major non-functionality changes: 1. Take scanning host if-statement out from ufshcd_probe_hba(), and move into a new added function ufshcd_add_lus(). In this new function ufshcd_add_lus(), the main functionalitis include: ICC initialization, add well-known LUs, devfreq initialization, UFS bsg probe and scsi host scan. The reason for this change is that these functionalities only being called during booting stage flow ufshcd_init()->ufshcd_async_scan(). In the processes of error handling and power management ufshcd_suspend(), ufshcd_resume(), ufshcd_probe_hba() being called, but these functionalitis above metioned are not hit. 2. Move context of initialization of parameters associated with the UFS device to a new added function ufshcd_device_params_init(). The reason of this change is that all of these parameters are used by driver, but only need to be initialized once when booting. Combine them into an integral function, make them easier maintain. Link: https://lore.kernel.org/r/20200120130820.1737-4-huobean@gmail.comReviewed-by:
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Bean Huo authored
In consideration of UFS host driver uses parameters of struct ufs_dev_desc, move its parameters to struct ufs_dev_info, delete struct ufs_dev_desc. Link: https://lore.kernel.org/r/20200120130820.1737-3-huobean@gmail.comReviewed-by:
Bart Van Assche <bvanassche@acm.org> Reviewed-by:
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Bean Huo authored
A non-zero error value likely being returned by ufshcd_scsi_add_wlus() in case of failure of adding the WLs, but ufshcd_probe_hba() doesn't use this value, and doesn't report this failure to upper caller. This patch is to fix this issue. Fixes: 2a8fa600 ("ufs: manually add well known logical units") Link: https://lore.kernel.org/r/20200120130820.1737-2-huobean@gmail.comReviewed-by:
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Stanley Chu authored
In MediaTek Chipsets, UniPro link and ufshci can enter proprietary low-power mode while link is in hibern8 state. Link: https://lore.kernel.org/r/20200117035108.19699-4-stanley.chu@mediatek.comReviewed-by:
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Stanley Chu authored
Export below functions for vendor usage: int ufshcd_hba_enable(struct ufs_hba *hba); int ufshcd_make_hba_operational(struct ufs_hba *hba); int ufshcd_uic_hibern8_exit(struct ufs_hba *hba); Link: https://lore.kernel.org/r/20200117035108.19699-3-stanley.chu@mediatek.comReviewed-by:
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Stanley Chu authored
Add dbg_register_dump variant vendor implementation in MediaTek UFS driver. Link: https://lore.kernel.org/r/20200117035108.19699-2-stanley.chu@mediatek.comReviewed-by:
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- 20 Jan, 2020 2 commits
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Bart Van Assche authored
This patch fixes the following Coverity complaint: FORWARD_NULL qla_init.c: 5275 in qla2x00_configure_local_loop() 5269 5270 if (fcport->scan_state == QLA_FCPORT_FOUND) 5271 qla24xx_fcport_handle_login(vha, fcport); 5272 } 5273 5274 cleanup_allocation: >>> CID 353340: (FORWARD_NULL) >>> Passing null pointer "new_fcport" to "qla2x00_free_fcport", which dereferences it. 5275 qla2x00_free_fcport(new_fcport); 5276 5277 if (rval != QLA_SUCCESS) { 5278 ql_dbg(ql_dbg_disc, vha, 0x2098, 5279 "Configure local loop error exit: rval=%x.\n", rval); 5280 } qla_init.c: 5275 in qla2x00_configure_local_loop() 5269 5270 if (fcport->scan_state == QLA_FCPORT_FOUND) 5271 qla24xx_fcport_handle_login(vha, fcport); 5272 } 5273 5274 cleanup_allocation: >>> CID 353340: (FORWARD_NULL) >>> Passing null pointer "new_fcport" to "qla2x00_free_fcport", which dereferences it. 5275 qla2x00_free_fcport(new_fcport); 5276 5277 if (rval != QLA_SUCCESS) { 5278 ql_dbg(ql_dbg_disc, vha, 0x2098, 5279 "Configure local loop error exit: rval=%x.\n", rval); 5280 } Fixes: 3dae2205 ("scsi: qla2xxx: Use common routine to free fcport struct") Cc: Himanshu Madhani <hmadhani@marvell.com> Cc: Quinn Tran <qutran@marvell.com> Cc: Martin Wilck <mwilck@suse.com> Cc: Daniel Wagner <dwagner@suse.de> Cc: Roman Bolshakov <r.bolshakov@yadro.com> Link: https://lore.kernel.org/r/20200118042056.32232-1-bvanassche@acm.orgSigned-off-by:Ewan D. Milne <emilne@redhat.com> Reviewed-by:
Daniel Wagner <dwagner@suse.de> Signed-off-by:
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Thomas Bogendoerfer authored
Use #ifdef QLA_64BIT_PTR to check if 64bit support is enabled. This fixes ("scsi: qla1280: Fix dma firmware download, if dma address is 64bit"). Link: https://lore.kernel.org/r/20200117115628.13219-1-tbogendoerfer@suse.deSigned-off-by:Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by:
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- 16 Jan, 2020 22 commits
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Anand Lodnoor authored
Link: https://lore.kernel.org/r/1579000882-20246-12-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
Anand Lodnoor <anand.lodnoor@broadcom.com> Signed-off-by:
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Anand Lodnoor authored
Remove usage of device_busy counter from driver. Instead of device_busy counter now driver uses 'nr_active' counter of request_queue to get the number of inflight request for a LUN. Link: https://lore.kernel.org/r/1579000882-20246-11-git-send-email-anand.lodnoor@broadcom.com Link : https://patchwork.kernel.org/patch/11249297/Signed-off-by:
Chandrakanth Patil <chandrakanth.patil@broadcom.com> Signed-off-by:
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Anand Lodnoor authored
IOCTLs causing firmware fault may end up in failed controller resets and finally killing the adapter. This patch fixes this problem as stated below: In OCR sequence, driver will attempt refiring pended IOCTLs upto two times. If first two attempts fail, then in third attempt driver will return pended IOCTLs with EBUSY status to application. These changes are done to ensure if any of pended IOCTLs is causing firmware fault and resulting into OCR failure, then in last attempt of OCR driver will refrain firing it to firmware and saving adapter from being killed due to faulty IOCTL. Link: https://lore.kernel.org/r/1579000882-20246-10-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by:
Shivasharan S <shivasharan.srikanteshwara@broadcom.com> Signed-off-by:
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Anand Lodnoor authored
Driver initiates OCR if a DCMD command times out. But there is a deadlock if the driver attempts to invoke another OCR before the mutex lock (reset_mutex) is released from the previous session of OCR. This patch takes care of the above scenario using new flag MEGASAS_FUSION_OCR_NOT_POSSIBLE to indicate if OCR is possible. Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/1579000882-20246-9-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Anand Lodnoor authored
DCMD_INIT is introduced to indicate the initial DCMD status, which was earlier set to MFI status. DCMD_BUSY indicates the resource is busy or locked. Link: https://lore.kernel.org/r/1579000882-20246-8-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Anand Lodnoor authored
After issuing a adapter reset, driver blindly used to set adprecovery flag to OPERATIONAL state. Add a check to see if the FW is operational before setting the flag and marking reset adapter successful. Link: https://lore.kernel.org/r/1579000882-20246-7-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Anand Lodnoor authored
At the time of firmware initialization, if JBOD map or RAID map is not available, driver can function without these features in a limited functionality mode. Link: https://lore.kernel.org/r/1579000882-20246-6-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Anand Lodnoor authored
Link: https://lore.kernel.org/r/1579000882-20246-5-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Anand Lodnoor authored
Ideally, optimal queue depth will be provided by firmware. The driver defines will be used as a fallback mechanism in case the FW assisted QD is not supported. The driver defined values provide optimal queue depth for most of the drives and the workloads, as is learned from the firmware assisted QD results. Link: https://lore.kernel.org/r/1579000882-20246-4-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Anand Lodnoor authored
Disable WRITE_SAME (no_write_same) for Virtual Disks only. For System PDs and EPDs (Enhanced PDs), WRITE_SAME need not be disabled by default. Link: https://lore.kernel.org/r/1579000882-20246-3-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Anand Lodnoor authored
After device resume we expect the firmware to be in READY state. Transition to READY might fail due to unhandled exceptions, such as an internal error or a hardware failure. Retry initiating chip reset and wait for the controller to come to ready state. Link: https://lore.kernel.org/r/1579000882-20246-2-git-send-email-anand.lodnoor@broadcom.comSigned-off-by:
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Thomas Bogendoerfer authored
Do firmware download with 64bit LOAD_RAM command, if driver is using 64bit addressing. Link: https://lore.kernel.org/r/20200114160936.1517-1-tbogendoerfer@suse.deSigned-off-by:
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Gabriel Krisman Bertazi authored
If the transport cannot be registered, the session/connection creation needs to be failed early to let the initiator know. Otherwise, the system will have an outstanding connection that cannot be used nor removed by open-iscsi. The result is similar to the error below, triggered by injecting a failure in the transport's registration path. openiscsi reports success: root@debian-vm:~# iscsiadm -m node -T iqn:lun1 -p 127.0.0.1 -l Logging in to [iface: default, target: iqn:lun1, portal: 127.0.0.1,3260] Login to [iface: default, target: iqn:lun1, portal:127.0.0.1,3260] successful. But cannot remove the session afterwards, since the kernel is in an inconsistent state. root@debian-vm:~# iscsiadm -m node -T iqn:lun1 -p 127.0.0.1 -u iscsiadm: No matching sessions found Link: https://lore.kernel.org/r/20200106185817.640331-4-krisman@collabora.comSigned-off-by:
Gabriel Krisman Bertazi <krisman@collabora.com> Signed-off-by:
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Gabriel Krisman Bertazi authored
The transport registration may fail. Make sure the errors are propagated to the callers. Link: https://lore.kernel.org/r/20200106185817.640331-3-krisman@collabora.comReviewed-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Gabriel Krisman Bertazi authored
attribute_container_device_trigger invokes callbacks that may fail for one or more classdevs, for instance, the transport_add_class_device callback, called during transport creation, does memory allocation. This information, though, is not propagated to upper layers, and any driver using the attribute_container_device_trigger API will not know whether any, some, or all callbacks succeeded. This patch implements a safe version of this dispatcher, to either succeed all the callbacks or revert to the original state. Link: https://lore.kernel.org/r/20200106185817.640331-2-krisman@collabora.comReviewed-by:
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Nick Black authored
A faulty userspace that calls destroy_session() before destroying the connections can trigger the failure. This patch prevents the issue by refusing to destroy the session if there are outstanding connections. ------------[ cut here ]------------ kernel BUG at mm/slub.c:306! invalid opcode: 0000 [#1] SMP PTI CPU: 1 PID: 1224 Comm: iscsid Not tainted 5.4.0-rc2.iscsi+ #7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__slab_free+0x181/0x350 [...] [ 1209.686056] RSP: 0018:ffffa93d4074fae0 EFLAGS: 00010246 [ 1209.686694] RAX: ffff934efa5ad800 RBX: 000000008010000a RCX: ffff934efa5ad800 [ 1209.687651] RDX: ffff934efa5ad800 RSI: ffffeb4041e96b00 RDI: ffff934efd402c40 [ 1209.688582] RBP: ffffa93d4074fb80 R08: 0000000000000001 R09: ffffffffbb5dfa26 [ 1209.689425] R10: ffff934efa5ad800 R11: 0000000000000001 R12: ffffeb4041e96b00 [ 1209.690285] R13: ffff934efa5ad800 R14: ffff934efd402c40 R15: 0000000000000000 [ 1209.691213] FS: 00007f7945dfb540(0000) GS:ffff934efda80000(0000) knlGS:0000000000000000 [ 1209.692316] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1209.693013] CR2: 000055877fd3da80 CR3: 0000000077384000 CR4: 00000000000006e0 [ 1209.693897] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1209.694773] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1209.695631] Call Trace: [ 1209.695957] ? __wake_up_common_lock+0x8a/0xc0 [ 1209.696712] iscsi_pool_free+0x26/0x40 [ 1209.697263] iscsi_session_teardown+0x2f/0xf0 [ 1209.698117] iscsi_sw_tcp_session_destroy+0x45/0x60 [ 1209.698831] iscsi_if_rx+0xd88/0x14e0 [ 1209.699370] netlink_unicast+0x16f/0x200 [ 1209.699932] netlink_sendmsg+0x21a/0x3e0 [ 1209.700446] sock_sendmsg+0x4f/0x60 [ 1209.700902] ___sys_sendmsg+0x2ae/0x320 [ 1209.701451] ? cp_new_stat+0x150/0x180 [ 1209.701922] __sys_sendmsg+0x59/0xa0 [ 1209.702357] do_syscall_64+0x52/0x160 [ 1209.702812] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1209.703419] RIP: 0033:0x7f7946433914 [...] [ 1209.706084] RSP: 002b:00007fffb99f2378 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 1209.706994] RAX: ffffffffffffffda RBX: 000055bc869eac20 RCX: 00007f7946433914 [ 1209.708082] RDX: 0000000000000000 RSI: 00007fffb99f2390 RDI: 0000000000000005 [ 1209.709120] RBP: 00007fffb99f2390 R08: 000055bc84fe9320 R09: 00007fffb99f1f07 [ 1209.710110] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000038 [ 1209.711085] R13: 000055bc8502306e R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace a2d933ede7f730d8 ]--- Link: https://lore.kernel.org/r/20191226203148.2172200-1-krisman@collabora.comSigned-off-by:
Nick Black <nlb@google.com> Co-developed-by:
Salman Qazi <sqazi@google.com> Signed-off-by:
Junho Ryu <jayr@google.com> Signed-off-by:
Khazhismel Kumykov <khazhy@google.com> Signed-off-by:
Lee Duncan <lduncan@suse.com> Signed-off-by:
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Stanley Chu authored
Add vendor-specific variant callback "apply_dev_quirks" to MediaTek UFS driver. Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Asutosh Das <asutoshd@codeaurora.org> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Bean Huo <beanhuo@micron.com> Cc: Can Guo <cang@codeaurora.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/1578726707-6596-3-git-send-email-stanley.chu@mediatek.comReviewed-by:
Avri Altman <avri.altman@wdc.com> Reviewed-by:
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Stanley Chu authored
Pass UFS device information to vendor-specific variant callback "apply_dev_quirks" because some platform vendors need to know such information to apply special handling or quirks in specific devices. At the same time, modify existing vendor implementations according to the new interface for those vendor drivers which will be built-in or built as a module alone with UFS core driver. [mkp: clarified commit desc] Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Asutosh Das <asutoshd@codeaurora.org> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Bean Huo <beanhuo@micron.com> Cc: Can Guo <cang@codeaurora.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/1578726707-6596-2-git-send-email-stanley.chu@mediatek.comReviewed-by:
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Colin Ian King authored
Currently the incorrect %X print format specifier is being used for several unsigned longs. Fix these by using %lX instead. Also join up some literal strings that are split. Link: https://lore.kernel.org/r/20200108193800.96706-1-colin.king@canonical.com Addresses-Coverity: ("Invalid type in argument to printf format specifier") Signed-off-by:
Colin Ian King <colin.king@canonical.com> Acked-by:
Khalid Aziz <khalid@gonehiking.org> Signed-off-by:
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Stanley Chu authored
Remove "errors" word in output string by ufshcd_print_err_hist() since not all printed targets are "errors". Sometimes they are just "events". In addition, all events which can be treated as "errors" already have "err" or "fail" words in their names. Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Asutosh Das <asutoshd@codeaurora.org> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Bean Huo <beanhuo@micron.com> Cc: Can Guo <cang@codeaurora.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/1578147968-30938-4-git-send-email-stanley.chu@mediatek.comReviewed-by:
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Stanley Chu authored
Device reset history shall be also added for vendor's device reset variant operation implementation. Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Asutosh Das <asutoshd@codeaurora.org> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Bean Huo <beanhuo@micron.com> Cc: Can Guo <cang@codeaurora.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/1578147968-30938-3-git-send-email-stanley.chu@mediatek.comReviewed-by:
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Stanley Chu authored
Currently checking if an error history element is empty or not is by its "value". In most cases, value is error code. However this checking is not correct because some errors or events do not specify any values in error history so values remain as 0, and this will lead to incorrect empty checking. Fix it by checking "timestamp" instead of "value" because timestamp will be always assigned for all history elements Cc: Alim Akhtar <alim.akhtar@samsung.com> Cc: Asutosh Das <asutoshd@codeaurora.org> Cc: Avri Altman <avri.altman@wdc.com> Cc: Bart Van Assche <bvanassche@acm.org> Cc: Bean Huo <beanhuo@micron.com> Cc: Can Guo <cang@codeaurora.org> Cc: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/1578147968-30938-2-git-send-email-stanley.chu@mediatek.comReviewed-by:
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- 10 Jan, 2020 2 commits
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YueHaibing authored
Fix sparse warning: drivers/scsi/lpfc/lpfc_nportdisc.c:344:1: warning: symbol 'lpfc_defer_acc_rsp' was not declared. Should it be static? Link: https://lore.kernel.org/r/20200107014956.41748-1-yuehaibing@huawei.comReported-by:
Hulk Robot <hulkci@huawei.com> Reviewed-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Signed-off-by:
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Martin K. Petersen authored
Pull compat_ioctl cleanup from Arnd. Here's his description: This series concludes the work I did for linux-5.5 on the compat_ioctl() cleanup, killing off fs/compat_ioctl.c and block/compat_ioctl.c by moving everything into drivers. Overall this would be a reduction both in complexity and line count, but as I'm also adding documentation the overall number of lines increases in the end. My plan was originally to keep the SCSI and block parts separate. This did not work easily because of interdependencies: I cannot do the final SCSI cleanup in a good way without first addressing the CDROM ioctls, so this is one series that I hope could be merged through either the block or the scsi git trees, or possibly both if you can pull in the same branch. The series comes in these steps: 1. clean up the sg v3 interface as suggested by Linus. I have talked about this with Doug Gilbert as well, and he would rebase his sg v4 patches on top of "compat: scsi: sg: fix v3 compat read/write interface" 2. Actually moving handlers out of block/compat_ioctl.c and block/scsi_ioctl.c into drivers, mixed in with cleanup patches 3. Document how to do this right. I keep getting asked about this, and it helps to point to some documentation file. The branch is based on another one that fixes a couple of bugs found during the creation of this series. Changes since v3: https://lore.kernel.org/lkml/20200102145552.1853992-1-arnd@arndb.de/ - Move sr_compat_ioctl fixup to correct patch (Ben Hutchings) - Add Reviewed-by tags Changes since v2: https://lore.kernel.org/lkml/20191217221708.3730997-1-arnd@arndb.de/ - Rebase to v5.5-rc4, which contains the earlier bugfixes - Fix sr_block_compat_ioctl() error handling bug found by Ben Hutchings - Fix idecd_locked_compat_ioctl() compat_ptr() bug - Don't try to handle HDIO_DRIVE_TASKFILE in drivers/ide - More documentation improvements Changes since v1: https://lore.kernel.org/lkml/20191211204306.1207817-1-arnd@arndb.de/ - move out the bugfixes into a branch for itself - clean up scsi sg driver further as suggested by Christoph Hellwig - avoid some ifdefs by moving compat_ptr() out of asm/compat.h - split out the blkdev_compat_ptr_ioctl function; bug spotted by Ben Hutchings - Improve formatting of documentation Signed-off-by:
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- 03 Jan, 2020 4 commits
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Arnd Bergmann authored
Documentation/process/botching-up-ioctls.rst was orignally written as a blog post for DRM driver writers, so it it misses some points while going into a lot of detail on others. Try to provide a replacement that addresses typical issues across a wider range of subsystems, and follows the style of the core-api documentation better. Many improvements to the document are suggested by Ben Hutchings <ben.hutchings@codethink.co.uk>, Jonathan Corbet <corbet@lwn.net> and Geert Uytterhoeven <geert@linux-m68k.org>. Reviewed-by:
Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by:
Arnd Bergmann <arnd@arndb.de>
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Arnd Bergmann authored
Having separate implementations of blkdev_ioctl() often leads to these getting out of sync, despite the comment at the top. Since most of the ioctl commands are compatible, and we try very hard not to add any new incompatible ones, move all the common bits into a shared function and leave only the ones that are historically different in separate functions for native/compat mode. To deal with the compat_ptr() conversion, pass both the integer argument and the pointer argument into the new blkdev_common_ioctl() and make sure to always use the correct one of these. blkdev_ioctl() is now only kept as a separate exported interfact for drivers/char/raw.c, which lacks a compat_ioctl variant. We should probably either move raw.c to staging if there are no more users, or export blkdev_compat_ioctl() as well. Reviewed-by:
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Arnd Bergmann authored
There is no need to go through a compat_alloc_user_space() copy any more, just wrap the function in a small helper that works the same way for native and compat mode. Reviewed-by:
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Arnd Bergmann authored
Having both in the same file allows a number of simplifications to the compat path, and makes it more likely that changes to the native path get applied to the compat version as well. Reviewed-by:
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