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2019-03-27MAINTAINERS: Fix documentation file name for PHY LibraryFlorian Fainelli
MAINTAINERS still pointed to phy.txt after moving this file into the rst format, fix this. Reported-by: Joe Perches <joe@perches.com> Fixes: 25fe02d00a1e ("Documentation: net: phy: switch documentation to rst format") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-27net: datagram: fix unbounded loop in __skb_try_recv_datagram()Paolo Abeni
Christoph reported a stall while peeking datagram with an offset when busy polling is enabled. __skb_try_recv_datagram() uses as the loop termination condition 'queue empty'. When peeking, the socket queue can be not empty, even when no additional packets are received. Address the issue explicitly checking for receive queue changes, as currently done by __skb_wait_for_more_packets(). Fixes: 2b5cd0dfa384 ("net: Change return type of sk_busy_loop from bool to void") Reported-and-tested-by: Christoph Paasch <cpaasch@apple.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-27net: dsa: mv88e6xxx: fix few issues in mv88e6390x_port_set_cmodeHeiner Kallweit
This patches fixes few issues in mv88e6390x_port_set_cmode(). 1. When entering the function the old cmode may be 0, in this case mv88e6390x_serdes_get_lane() returns -ENODEV. As result we bail out and have no chance to set a new mode. Therefore deal properly with -ENODEV. 2. Once we have disabled power and irq, let's set the cached cmode to 0. This reflects the actual status and is cleaner if we bail out with an error in the following function calls. 3. The cached cmode is used by mv88e6390x_serdes_get_lane(), mv88e6390_serdes_power_lane() and mv88e6390_serdes_irq_enable(). Currently we set the cached mode to the new one at the very end of the function only, means until then we use the old one what may be wrong. 4. When calling mv88e6390_serdes_irq_enable() we use the lane value belonging to the old cmode. Get the lane belonging to the new cmode before calling this function. It's hard to provide a good "Fixes" tag because quite a few smaller changes have been done to the code in question recently. Fixes: d235c48b40d3 ("net: dsa: mv88e6xxx: power serdes on/off for 10G interfaces on 6390X") Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-28drm: rcar-du: lvds: Set LVEN and LVRES bits together on D3Laurent Pinchart
On the D3 SoC the LVDS PHY must be enabled in the same register write that enables the LVDS output. Skip writing the LVEN bit independently on that platform, it will be set by the write that sets LVRES. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
2019-03-28drm: rcar-du: lvds: Adjust operating frequency for D3 and E3Laurent Pinchart
The D3 and E3 SoCs have different pixel clock frequency limits for the LVDS encoder than the other SoCs in the Gen3 family. Adjust the mode fixup implementation accordingly. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
2019-03-28drm: rcar-du: Link CRTCs to the DU deviceKieran Bingham
The rcar_du_crtc functions have a heavy reliance on the rcar_du_group structure, in many cases just to access the DU device context. To better separate the groups out of the CRTC handling code, give the rcar_du_crtc its own pointer to the device and remove the indirection through the group pointers. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2019-03-28drm: rcar-du: lvds: Fix post-DLL divider calculationLaurent Pinchart
The PLL parameters are computed by looping over the range of acceptable M, N and E values, and selecting the combination that produces the output frequency closest to the target. The internal frequency constraints are taken into account by restricting the tested values for the PLL parameters, reducing the search space. The target frequency, however, is only taken into account when computing the post-PLL divider, which can result in a 0 value for the divider when the PLL output frequency being tested is lower than half of the target frequency. Subsequent loops will produce a better set of PLL parameters, but for some of the iterations this can result in a division by 0. Fix it by clamping the divider value. We could instead restrict the E values being tested in the inner loop, but that would require additional calculation that would likely be less efficient as the E parameter can only take three different values. Fixes: c25c01361199 ("drm: rcar-du: lvds: D3/E3 support") Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
2019-03-28drm: Forward-declare struct drm_format_info in drm_framebuffer.hLaurent Pinchart
drm_framebuffer.h makes use of a pointer to struct drm_format_info but doesn't include drm_fourcc.h (neither directly nor indirectly). Forward-declare the structure. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Reviewed-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
2019-03-28drm: rcar-du: Remove unused prototypesKieran Bingham
The CRTC suspend and resume functions have been replaced, but the prototypes were not removed. Remove the redundant definitions. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2019-03-28drm: rcar-du: crtc: Make local functions staticKieran Bingham
The rcar_du_crtc_mode_valid() and rcar_du_crtc_get_crc_sources() functions are accessed only through a function pointer table. Convert the function definitions to be static to the module. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2019-03-28drm: Fix subtle spelling error in drm_crtc_stateKieran Bingham
The drm_crtc_state documentation contains a subtle misspelling of the word subtle. Correct it. Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
2019-03-28drm: rcar-du: Support panels connected directly to the DPAD outputsLaurent Pinchart
The R-Car DU driver assumes that a bridge is always connected to the DU output. This is valid for the LVDS and HDMI outputs, but the DPAD outputs can be connected directly to a panel, in which case no bridge is available. To support this use case, detect whether the entities connected to the DU DPAD outputs are encoders or panels based on the number of ports of their DT node, and retrieve the corresponding type of DRM objects. For panels, additionally create panel bridge instances. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Tested-by: Kevin Key <kevin.key@gentex.com> Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
2019-03-27drm/amd/powerplay: update current profile mode only when it's really appliedEvan Quan
No need to update current profile mode if the new profile mode does not take effect in fact. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Kent Russell <kent.russell@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: fix odm output gamma programmingDmytro Laktyushkin
Currently only top pipe gets output tf programmed. This change makes all odm head pipes get output tf programmed. Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Nikola Cornij <Nikola.Cornij@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: Populate macro_tile_size field for dmlJoshua Aberback
Create a functions to return swizzle types for dml Signed-off-by: Joshua Aberback <joshua.aberback@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: use dc_is_virtual instead of ENUMEric Bernstein
Signed-off-by: Eric Bernstein <eric.bernstein@amd.com> Reviewed-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@amd.com> Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: 3.2.24Aric Cyr
Signed-off-by: Aric Cyr <aric.cyr@amd.com> Reviewed-by: Aric Cyr <Aric.Cyr@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: Pass SDP spliting in parametersNikola Cornij
pass SDP splitting when setting stream attributes for future use Signed-off-by: Nikola Cornij <nikola.cornij@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: Create clock funcsEryk Brol
Create dccg_init and init_clocks for future use Signed-off-by: Eryk Brol <eryk.brol@amd.com> Reviewed-by: Jun Lei <Jun.Lei@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: Clean up old pplib interface functionsFatemeh Darbehani
[Why] set_display_requirement, dcn1_pplib_apply_display_requirements are no longer used and should be removed. Signed-off-by: Fatemeh Darbehani <fatemeh.darbehani@amd.com> Reviewed-by: Hersen Wu <hersenxs.wu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: Pass init_data into DCN resource creationHarry Wentland
[WHY] The resource constructor currently needs num_virtual_links from init_data but will need access to other items provided by DM. [HOW] Pass init_data into DCN create_resource_pool functions. Signed-off-by: Harry Wentland <harry.wentland@amd.com> Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Acked-by: Hersen Wu <hersenxs.wu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: Handle branch device with DFP count = 0 case.Hugo Hu
[Why] When you have a SST branch device the driver, Even no sink device connected, it also send HPD with a valid EDID. Driver will config it to DP sink. Therefore, there're two displays in display setting. DPCD 0x05, DFP_PRESENT = 1 (branch device), DFP_TYPE = 00 (Display Port) [How] Driver determine DPCD 0x05 DFP_PRESENT = 1(branch) as an active dongle And check DFP count. Signed-off-by: Hugo Hu <hugo.hu@amd.com> Reviewed-by: Hugo Hu <Hugo.Hu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: program default output gammahersen wu
program default output gamma if no user specific gamma parameters passed. Signed-off-by: hersen wu <hersenxs.wu@amd.com> Reviewed-by: Sun peng Li <Sunpeng.Li@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: add preferred pipe split logicJun Lei
[why] existing logic finds "first free pipe from 5 -> 0" to split this will cause certain sequences to require DC to move an MPCC from one tree to another, which is unsupported this leads to blackscreen to mitigate this problem, we will always try to acquire the "preferred" pipe, and each pipe has a unique preferred pipe this means we avoid most of the scenarios where pipe splitting leads to moving MPCC from one tree to another Signed-off-by: Jun Lei <Jun.Lei@amd.com> Reviewed-by: Tony Cheng <Tony.Cheng@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: don't put the root PD into the relocated listChristian König
Instead of skipping the root PD while processing the relocated list just never put it on the list in the first place. This avoids walking the list all together when the root PD is the only entry and so also avoids trying to submit a zero sized IB to the SDMA. Signed-off-by: Christian König <christian.koenig@amd.com> Tested-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: drop the ib from the VM update parametersChristian König
It is redundant with the job pointer. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: move VM table mapping into the backend as wellChristian König
Clean that up further and also fix another case where the BO wasn't kmapped for CPU based updates. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: XGMI pstate switch initial supportshaoyunl
Driver vote low to high pstate switch whenever there is an outstanding XGMI mapping request. Driver vote high to low pstate when all the outstanding XGMI mapping is terminated. Signed-off-by: shaoyunl <shaoyun.liu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: use the new VM backend for clearsChristian König
And remove the existing code when it is unused. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Chunming Zhou <david1.zhou@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: defer cmd/fence/fw buffers destroy on hw_init failureEvan Quan
As the cleanup jobs performed in pre_fini may still need these buffers. NULL pointer dereference will be triggered without them. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Feifei Xu <Feifei.Xu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: add more debug friendly promptsEvan Quan
Large piece of codes share one error prompt. That is not friendly for debugging. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Feifei Xu <Feifei.Xu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: error out on mode1 reset failureEvan Quan
The error return value should be correctly reflected. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Feifei Xu <Feifei.Xu@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: trivial typo fixEvan Quan
"error" was not correctly spelled. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: remove per obj debugfs writexinhui pan
there is ras_control node which can do its job. Signed-off-by: xinhui pan <xinhui.pan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: Fix amdgpu ras to ta enums conversionxinhui pan
Add helpes to transalte the two enums. And it will catch bugs easily. Signed-off-by: xinhui pan <xinhui.pan@amd.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: use macro instead of enum for flagsxinhui pan
better to use macro. Signed-off-by: xinhui pan <xinhui.pan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amdgpu: Fix some sanity checkxinhui pan
ras context might be NULL, so move con->h_data after check !con also fix sizeof wrong type while at it. Signed-off-by: xinhui pan <xinhui.pan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/display: VBIOS can't be light up HDMI when restart systemPaul Hsieh
[Why] VBIOS will not post pixel rate > 340MHz. If driver set pixel rate > 340MHz and do restart bottom, VBIOS can't post HDMI monitor due to monitor is stay in HDMI2.0 state. [How] Program Scrambling_Enable and TMDS_Bit_Clock_Ratio when disable stream. Signed-off-by: Paul Hsieh <paul.hsieh@amd.com> Reviewed-by: Charlene Liu <Charlene.Liu@amd.com> Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Acked-by: Harry Wentland <Harry.Wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/powerplay: fix possible hang with 3+ 4K monitorsEvan Quan
If DAL requires to force MCLK high, the FCLK will be forced to high also. Signed-off-by: Evan Quan <evan.quan@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/powerplay: correct data type to avoid overflowEvan Quan
Avoid left shift overflow. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/powerplay: add ECC feature bitEvan Quan
It's OK to have this feature bit with old SMU firmwares. But the feature should be disabled on them. Signed-off-by: Evan Quan <evan.quan@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27drm/amd/amdgpu: fix PCIe dpm feature issue (v3)Chengming Gui
use pcie_bandwidth_available to get real link state to update pcie table. v2: fix incorrect initialized return value v3: expand the fetching method about the link width to all asics. Signed-off-by: Chengming Gui <Jack.Gui@amd.com> Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-27scsi: ibmvfc: Clean up transport eventsTyrel Datwyler
No change to functionality. Simply make transport event messages a little clearer, and rework CRQ format enums such that we have separate enums for INIT messages and XPORT events. [mkp: typo] Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-03-27scsi: ibmvfc: Byte swap status and error codes when loggingTyrel Datwyler
Status and error codes are returned in big endian from the VIOS. The values are translated into a human readable format when logged, but the values are also logged. This patch byte swaps those values so that they are consistent between BE and LE platforms. Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-03-27scsi: ibmvfc: Add failed PRLI to cmd_status lookup arrayTyrel Datwyler
The VIOS uses the SCSI_ERROR class to report PRLI failures. These errors are indicated with the combination of a IBMVFC_FC_SCSI_ERROR return status and 0x8000 error code. Add these codes to cmd_status[] with appropriate human readable error message. Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-03-27scsi: ibmvfc: Remove "failed" from logged errorsTyrel Datwyler
The text of messages logged with ibmvfc_log_error() always contain the term "failed". In the case of cancelled commands during EH they are reported back by the VIOS using error codes. This can be confusing to somebody looking at these log messages as to whether a command was successfully cancelled. The following real log message for example it is unclear if the transaction was actaully cancelled. <6>sd 0:0:1:1: Cancelling outstanding commands. <3>sd 0:0:1:1: [sde] Command (28) failed: transaction cancelled (2:6) flags: 0 fcp_rsp: 0, resid=0, scsi_status: 0 Remove prefixing of "failed" to all error logged messages. The ibmvfc_log_error() function translates the returned error/status codes to a human readable message already. Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-03-27scsi: zfcp: reduce flood of fcrscn1 trace records on multi-element RSCNSteffen Maier
If an incoming ELS of type RSCN contains more than one element, zfcp suboptimally causes repeated erp trigger NOP trace records for each previously failed port. These could be ports that went away. It loops over each RSCN element, and for each of those in an inner loop over all zfcp_ports. The trigger to recover failed ports should be just the reception of some RSCN, no matter how many elements it has. So we can loop over failed ports separately, and only then loop over each RSCN element to handle the non-failed ports. The call chain was: zfcp_fc_incoming_rscn for (i = 1; i < no_entries; i++) _zfcp_fc_incoming_rscn list_for_each_entry(port, &adapter->port_list, list) if (masked port->d_id match) zfcp_fc_test_link if (!port->d_id) zfcp_erp_port_reopen "fcrscn1" <=== In order the reduce the "flooding" of the REC trace area in such cases, we factor out handling the failed ports to be outside of the entries loop: zfcp_fc_incoming_rscn if (no_entries > 1) <=== list_for_each_entry(port, &adapter->port_list, list) <=== if (!port->d_id) zfcp_erp_port_reopen "fcrscn1" <=== for (i = 1; i < no_entries; i++) _zfcp_fc_incoming_rscn list_for_each_entry(port, &adapter->port_list, list) if (masked port->d_id match) zfcp_fc_test_link Abbreviated example trace records before this code change: Tag : fcrscn1 WWPN : 0x500507630310d327 ERP want : 0x02 ERP need : 0x02 Tag : fcrscn1 WWPN : 0x500507630310d327 ERP want : 0x02 ERP need : 0x00 NOP => superfluous trace record The last trace entry repeats if there are more than 2 RSCN elements. Signed-off-by: Steffen Maier <maier@linux.ibm.com> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Reviewed-by: Jens Remus <jremus@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-03-27scsi: zfcp: fix scsi_eh host reset with port_forced ERP for non-NPIV FCP devicesSteffen Maier
Suppose more than one non-NPIV FCP device is active on the same channel. Send I/O to storage and have some of the pending I/O run into a SCSI command timeout, e.g. due to bit errors on the fibre. Now the error situation stops. However, we saw FCP requests continue to timeout in the channel. The abort will be successful, but the subsequent TUR fails. Scsi_eh starts. The LUN reset fails. The target reset fails. The host reset only did an FCP device recovery. However, for non-NPIV FCP devices, this does not close and reopen ports on the SAN-side if other non-NPIV FCP device(s) share the same open ports. In order to resolve the continuing FCP request timeouts, we need to explicitly close and reopen ports on the SAN-side. This was missing since the beginning of zfcp in v2.6.0 history commit ea127f975424 ("[PATCH] s390 (7/7): zfcp host adapter."). Note: The FSF requests for forced port reopen could run into FSF request timeouts due to other reasons. This would trigger an internal FCP device recovery. Pending forced port reopen recoveries would get dismissed. So some ports might not get fully reopened during this host reset handler. However, subsequent I/O would trigger the above described escalation and eventually all ports would be forced reopen to resolve any continuing FCP request timeouts due to earlier bit errors. Signed-off-by: Steffen Maier <maier@linux.ibm.com> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: <stable@vger.kernel.org> #3.0+ Reviewed-by: Jens Remus <jremus@linux.ibm.com> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-03-27scsi: zfcp: fix rport unblock if deleted SCSI devices on Scsi_HostSteffen Maier
An already deleted SCSI device can exist on the Scsi_Host and remain there because something still holds a reference. A new SCSI device with the same H:C:T:L and FCP device, target port WWPN, and FCP LUN can be created. When we try to unblock an rport, we still find the deleted SCSI device and return early because the zfcp_scsi_dev of that SCSI device is not ZFCP_STATUS_COMMON_UNBLOCKED. Hence we miss to unblock the rport, even if the new proper SCSI device would be in good state. Therefore, skip deleted SCSI devices when iterating the sdevs of the shost. [cf. __scsi_device_lookup{_by_target}() or scsi_device_get()] The following abbreviated trace sequence can indicate such problem: Area : REC Tag : ersfs_3 LUN : 0x4045400300000000 WWPN : 0x50050763031bd327 LUN status : 0x40000000 not ZFCP_STATUS_COMMON_UNBLOCKED Ready count : n not incremented yet Running count : 0x00000000 ERP want : 0x01 ERP need : 0xc1 ZFCP_ERP_ACTION_NONE Area : REC Tag : ersfs_3 LUN : 0x4045400300000000 WWPN : 0x50050763031bd327 LUN status : 0x41000000 Ready count : n+1 Running count : 0x00000000 ERP want : 0x01 ERP need : 0x01 ... Area : REC Level : 4 only with increased trace level Tag : ertru_l LUN : 0x4045400300000000 WWPN : 0x50050763031bd327 LUN status : 0x40000000 Request ID : 0x0000000000000000 ERP status : 0x01800000 ERP step : 0x1000 ERP action : 0x01 ERP count : 0x00 NOT followed by a trace record with tag "scpaddy" for WWPN 0x50050763031bd327. Signed-off-by: Steffen Maier <maier@linux.ibm.com> Fixes: 6f2ce1c6af37 ("scsi: zfcp: fix rport unblock race with LUN recovery") Cc: <stable@vger.kernel.org> #2.6.32+ Reviewed-by: Jens Remus <jremus@linux.ibm.com> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-03-27scsi: sd: Quiesce warning if device does not report optimal I/O sizeMartin K. Petersen
Commit a83da8a4509d ("scsi: sd: Optimal I/O size should be a multiple of physical block size") split one conditional into several separate statements in an effort to provide more accurate warning messages when a device reports a nonsensical value. However, this reorganization accidentally dropped the precondition of the reported value being larger than zero. This lead to a warning getting emitted on devices that do not report an optimal I/O size at all. Remain silent if a device does not report an optimal I/O size. Fixes: a83da8a4509d ("scsi: sd: Optimal I/O size should be a multiple of physical block size") Cc: Randy Dunlap <rdunlap@infradead.org> Cc: <stable@vger.kernel.org> Reported-by: Hussam Al-Tayeb <ht990332@gmx.com> Tested-by: Hussam Al-Tayeb <ht990332@gmx.com> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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