- 10 Mar, 2022 40 commits
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Peter Fink authored
For example CANext FD needs to distinguish between bittiming constants valid for arbitration phase and data phase to reach maximum performance at higher speeds. Link: https://lore.kernel.org/all/20220309124132.291861-20-mkl@pengutronix.deSigned-off-by:
Peter Fink <pfink@christ-es.de> Signed-off-by:
Christoph Möhring <cmoehring@christ-es.de> Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
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Peter Fink authored
The CANtact Pro from LinkLayer Labs is based on the LPC54616 µC, which is affected by the NXP LPC USB transfer erratum. However, the current firmware (version 2) doesn't set the GS_CAN_FEATURE_REQ_USB_QUIRK_LPC546XX bit. This patch sets the feature GS_CAN_FEATURE_REQ_USB_QUIRK_LPC546XX to workaround this issue. For the GS_USB_BREQ_DATA_BITTIMING USB control message the CANtact Pro firmware uses a request value, which is already used by the candleLight firmware for a different purpose (GS_USB_BREQ_GET_USER_ID). This patch set the feature GS_CAN_FEATURE_QUIRK_BREQ_CANTACT_PRO to workaround this issue. Link: https://lore.kernel.org/all/20220309124132.291861-19-mkl@pengutronix.de Cc: Ryan Edwards <ryan.edwards@gmail.com> Signed-off-by:
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Marc Kleine-Budde authored
For the GS_USB_BREQ_DATA_BITTIMING USB control message the CANtact Pro firmware uses a request value, which is already used by the candleLight firmware for a different purpose (GS_USB_BREQ_GET_USER_ID). This patch adds a quirk to use the CANtact Pro's value for the GS_USB_BREQ_DATA_BITTIMING USB control message instead of the official one. Link: https://lore.kernel.org/all/20220309124132.291861-18-mkl@pengutronix.deSigned-off-by:
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Peter Fink authored
Introduce a workaround for a NXP chip errata on LPC546xx controllers (Errata sheet LPC546xx / USB.15). According to the document corruption can occur when the following conditions are met: * A TX (IN) transfer happens after a RX (OUT) transfer. * The RX (OUT) transfer length is 4 + N * 16 (N >= 0) bytes. Even though the struct gs_host_frame has a size of 76 bytes for a FD frame, which does not apply to the above rule, corruption could be seen. Adding a dummy byte to break the second condition also on transfer lengths with 4 + N * 8 bytes reliably circumvents USB transfer data corruption. The firmware can now request this quirk by setting GS_CAN_FEATURE_REQ_USB_QUIRK_LPC546XX. Link: https://lore.kernel.org/all/20220309124132.291861-17-mkl@pengutronix.deSigned-off-by:
Alexander Schartner <aschartner@christ-es.de> Signed-off-by:
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Peter Fink authored
CANtact Pro from Linklayer is the first gs_usb compatible device supporting CAN-FD with a different HW and re-written candlelight FW. Support for CAN-FD is indicated by the device setting the GS_CAN_FEATURE_FD flag. CAN-FD support is requested by the driver with the GS_CAN_MODE_FD flag. The CAN-FD specific data bit timing parameters are set with the GS_USB_BREQ_DATA_BITTIMING control message. This patch is based on the Eric Evenchick's gs_usb_fd driver (which itself is a fork of gs_usb). The gs_usb_fd code base was reintegrated into the gs_usb driver, and reworked to not break the existing classical-CAN only hardware. Link: https://lore.kernel.org/all/20220309124132.291861-16-mkl@pengutronix.de Link: https://github.com/linklayer/gs_usb_fd/issues/2Co-developed-by:
Eric Evenchick <eric@evenchick.com> Signed-off-by:
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Peter Fink authored
Modify struct gs_host_frame to make use of a union and DECLARE_FLEX_ARRAY to be able to store different data (lengths), which will be added in later commits. Store the gs_host_frame length in TX direction (host -> device) in struct gs_can::hf_size_tx and RX direction (device -> host) in struct gs_usb::hf_size_rx so it must be calculated only once. Link: https://lore.kernel.org/all/20220309124132.291861-15-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
Some STM32G3 chips support up to 3 CAN-FD channels, increase number of supported channels in this driver to 3 accordingly. Link: https://lore.kernel.org/all/20220309124132.291861-14-mkl@pengutronix.deSuggested-by:
Ryan Edwards <ryan.edwards@gmail.com> Signed-off-by:
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Marc Kleine-Budde authored
Introduce the variable udev in the gs_usb_probe() function to hold a pointer to the struct usb_device. This avoids recalculating the value several times in this function. Link: https://lore.kernel.org/all/20220309124132.291861-13-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
The widely used open source firmware candleLight supports padding the USB packets to max packet size to improve performance on Windows systems. This patch documents the bit. Link: https://lore.kernel.org/all/20220309124132.291861-12-mkl@pengutronix.de Link: https://github.com/candle-usb/candleLight_fw/pull/7Signed-off-by:
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Marc Kleine-Budde authored
The widely used open source firmware candleLight has optional support for reading/writing of an user defined value into the device's flash. This is indicated by the GS_CAN_FEATURE_USER_ID feature. The corresponding request are GS_USB_BREQ_GET_USER_ID and GS_USB_BREQ_SET_USER_ID. This patch documents these values. Link: https://lore.kernel.org/all/20220309124132.291861-11-mkl@pengutronix.de Link: https://github.com/candle-usb/candleLight_fw/commit/1453d70dc9a9d98ac254893ba5114b8e826e0e39Signed-off-by:
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Marc Kleine-Budde authored
In the binary interface a feature bit might have a corresponding mode bit (of the same value). The GS_CAN_FEATURE_IDENTIFY feature doesn't come with a mode. Document this, to avoid gaps when adding more features/modes later. Link: https://lore.kernel.org/all/20220309124132.291861-10-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
Newer versions of the widely used open source firmware candleLight support hardware timestamps. The support is activated by setting the GS_CAN_MODE_HW_TIMESTAMP in the GS_USB_BREQ_MODE request. Although timestamp support is not yet supported by this driver, add the missing bit for documentation purpose. Link: https://lore.kernel.org/all/20220309124132.291861-9-mkl@pengutronix.de Link: https://github.com/candle-usb/candleLight_fw/commit/44431f4a4354a878fbd15b273bf04fce1dcdff7eSigned-off-by:
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Marc Kleine-Budde authored
This patch moves the call to SET_NETDEV_DEV() after all handling (including cleanup) of the bt_const->feature is done. This looks more consistent. Link: https://lore.kernel.org/all/20220309124132.291861-8-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
This patch rewraps the arguments of usb_control_msg() and usb_fill_bulk_urb() to make full use of the standard line length of 80 characters. Link: https://lore.kernel.org/all/20220309124132.291861-7-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
This patch rewraps the arguments of netdev_err() to make full use of the standard line length of 80 characters. Link: https://lore.kernel.org/all/20220309124132.291861-6-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
This patch converts the driver to use BIT() to define flags. Link: https://lore.kernel.org/all/20220309124132.291861-5-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
This patch sorts the include files alphabetically. Link: https://lore.kernel.org/all/20220309124132.291861-4-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
This patch fixes a checkpatch warning by converting a "unsigned" into an "unsigned int". Link: https://lore.kernel.org/all/20220309124132.291861-3-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
With this patch a consistent one space indention throughout the whole driver is used. Link: https://lore.kernel.org/all/20220309124132.291861-2-mkl@pengutronix.deSigned-off-by:
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Ulrich Hecht authored
Adds support for the CANFD IP variant in the V3U SoC. Differences to controllers in other SoCs are limited to an increase in the number of channels from two to eight, an absence of dedicated registers for "classic" CAN mode, and a number of differences in magic numbers (register offsets and layouts). Inspired by BSP patch by Kazuya Mizuguchi. Link: https://lore.kernel.org/all/20220309162609.3726306-2-uli+renesas@fpond.euSigned-off-by:
Ulrich Hecht <uli+renesas@fpond.eu> Reviewed-by:
Vincent Mailhol <mailhol.vincent@wanadoo.fr> Signed-off-by:
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Ulrich Hecht authored
Document support for rcar_canfd on R8A779A0 (V3U) SoCs. Link: https://lore.kernel.org/all/20220309162609.3726306-5-uli+renesas@fpond.euSigned-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
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Vincent Mailhol authored
can: etas_es58x: es58x_fd_rx_event_msg(): initialize rx_event_msg before calling es58x_check_msg_len() Function es58x_fd_rx_event() invokes the es58x_check_msg_len() macro: | ret = es58x_check_msg_len(es58x_dev->dev, *rx_event_msg, msg_len); While doing so, it dereferences an uninitialized variable: *rx_event_msg. This is actually harmless because es58x_check_msg_len() only uses preprocessor macros (sizeof() and __stringify()) on *rx_event_msg. c.f. [1]. Nonetheless, this pattern is confusing so the lines are reordered to make sure that rx_event_msg is correctly initialized. This patch also fixes a false positive warning reported by cppcheck: | cppcheck possible warnings: (new ones prefixed by >>, may not be real problems) | | In file included from drivers/net/can/usb/etas_es58x/es58x_fd.c: | >> drivers/net/can/usb/etas_es58x/es58x_fd.c:174:8: warning: Uninitialized variable: rx_event_msg [uninitvar] | ret = es58x_check_msg_len(es58x_dev->dev, *rx_event_msg, msg_len); | ^ [1] https://elixir.bootlin.com/linux/v5.16/source/drivers/net/can/usb/etas_es58x/es58x_core.h#L467 Link: https://lore.kernel.org/all/20220306101302.708783-1-mailhol.vincent@wanadoo.frSigned-off-by:
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Oliver Hartkopp authored
The vxcan driver provides a pair of virtual CAN interfaces to exchange CAN traffic between different namespaces - analogue to veth. In opposite to the vcan driver the local sent CAN traffic on this interface is not echo'ed back but only sent to the remote peer. This is unusual and can be easily fixed by removing IFF_ECHO from the netdevice flags that are set for vxcan interfaces by default at startup. Without IFF_ECHO set on driver level, the local sent CAN frames are echo'ed in af_can.c in can_send(). This patch makes vxcan interfaces adopt the same local echo behavior and procedures as known from the vcan interfaces. Fixes: a8f820a3 ("can: add Virtual CAN Tunnel driver (vxcan)") Link: https://lore.kernel.org/all/20220309120416.83514-5-socketcan@hartkopp.netSigned-off-by:
Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by:
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Oliver Hartkopp authored
With can_create_echo_skb() the skb which is forwarded to the peer CAN interface shares the sk pointer from the originating socket. This makes the CAN frame show up in the peer namespace as a TX packet. With the use of skb_clone() analogue to the handling in gw.c the peer skb gets a new start in the peer namespace and correctly appears as a RX packet. Link: https://lore.kernel.org/all/20220309120416.83514-4-socketcan@hartkopp.netSigned-off-by:
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Oliver Hartkopp authored
The reason to extend the max PDU size from 4095 Byte (12 bit length value) to a 32 bit value (up to 4 GByte) was to be able to flash 64 kByte bootloaders with a single ISO-TP PDU. The max PDU size in the Linux kernel implementation was set to 8200 Bytes to be able to test the length information escape sequence. It turns out that the demand for 64 kByte PDUs is real so the value for MAX_MSG_LENGTH is set to 66000 to be able to potentially add some checksums to the 65.536 Byte block. Link: https://github.com/linux-can/can-utils/issues/347#issuecomment-1056142301 Link: https://lore.kernel.org/all/20220309120416.83514-3-socketcan@hartkopp.netSigned-off-by:
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Oliver Hartkopp authored
The N_As value describes the time a CAN frame needs on the wire when transmitted by the CAN controller. Even very short CAN FD frames need arround 100 usecs (bitrate 1Mbit/s, data bitrate 8Mbit/s). Having N_As to be zero (the former default) leads to 'no CAN frame separation' when STmin is set to zero by the receiving node. This 'burst mode' should not be enabled by default as it could potentially dump a high number of CAN frames into the netdev queue from the soft hrtimer context. This does not affect the system stability but is just not nice and cooperative. With this N_As/frame_txtime value the 'burst mode' is disabled by default. As user space applications usually do not set the frame_txtime element of struct can_isotp_options the new in-kernel default is very likely overwritten with zero when the sockopt() CAN_ISOTP_OPTS is invoked. To make sure that a N_As value of zero is only set intentional the value '0' is now interpreted as 'do not change the current value'. When a frame_txtime of zero is required for testing purposes this CAN_ISOTP_FRAME_TXTIME_ZERO u32 value has to be set in frame_txtime. Link: https://lore.kernel.org/all/20220309120416.83514-2-socketcan@hartkopp.netSigned-off-by:
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Oliver Hartkopp authored
Instead of dumping the CAN frames into the netdevice queue the process to transmit consecutive frames (CF) now waits for the frame to be transmitted and therefore echo'ed from the CAN interface. Link: https://lore.kernel.org/all/20220309120416.83514-1-socketcan@hartkopp.netSigned-off-by:
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Luiz Angelo Daros de Luca authored
DSA_TAG_PROTO_RTL8_4L is not defined. It should be DSA_TAG_PROTO_RTL8_4T. Fixes: cd87fecd ("net: dsa: tag_rtl8_4: add rtl8_4t trailing variant") Reported-by:
Arınç ÜNAL <arinc.unal@arinc9.com> Signed-off-by:
Luiz Angelo Daros de Luca <luizluca@gmail.com> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Link: https://lore.kernel.org/r/20220309175641.12943-1-luizluca@gmail.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Robert Hancock authored
Use napi_alloc_skb to allocate memory when refilling the RX ring in axienet_poll for more efficiency. napi_alloc_skb() can reuse softirq-local cache of freed skbs which may still be cache-warm and skipping allocator calls. Signed-off-by:
Robert Hancock <robert.hancock@calian.com> Link: https://lore.kernel.org/r/20220308211013.1530955-1-robert.hancock@calian.comSigned-off-by:
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Eric Dumazet authored
Back when tcp_tso_autosize() and TCP pacing were introduced, our focus was really to reduce burst sizes for long distance flows. The simple heuristic of using sk_pacing_rate/1024 has worked well, but can lead to too small packets for hosts in the same rack/cluster, when thousands of flows compete for the bottleneck. Neal Cardwell had the idea of making the TSO burst size a function of both sk_pacing_rate and tcp_min_rtt() Indeed, for local flows, sending bigger bursts is better to reduce cpu costs, as occasional losses can be repaired quite fast. This patch is based on Neal Cardwell implementation done more than two years ago. bbr is adjusting max_pacing_rate based on measured bandwidth, while cubic would over estimate max_pacing_rate. /proc/sys/net/ipv4/tcp_tso_rtt_log can be used to tune or disable this new feature, in logarithmic steps. Tested: 100Gbit NIC, two hosts in the same rack, 4K MTU. 600 flows rate-limited to 20000000 bytes per second. Before patch: (TSO sizes would be limited to 20000000/1024/4096 -> 4 segments per TSO) ~# echo 0 >/proc/sys/net/ipv4/tcp_tso_rtt_log ~# nstat -n;perf stat ./super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000;nstat|egrep "TcpInSegs|TcpOutSegs|TcpRetransSegs|Delivered" 96005 Performance counter stats for './super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000': 65,945.29 msec task-clock # 2.845 CPUs utilized 1,314,632 context-switches # 19935.279 M/sec 5,292 cpu-migrations # 80.249 M/sec 940,641 page-faults # 14264.023 M/sec 201,117,030,926 cycles # 3049769.216 GHz (83.45%) 17,699,435,405 stalled-cycles-frontend # 8.80% frontend cycles idle (83.48%) 136,584,015,071 stalled-cycles-backend # 67.91% backend cycles idle (83.44%) 53,809,530,436 instructions # 0.27 insn per cycle # 2.54 stalled cycles per insn (83.36%) 9,062,315,523 branches # 137422329.563 M/sec (83.22%) 153,008,621 branch-misses # 1.69% of all branches (83.32%) 23.182970846 seconds time elapsed TcpInSegs 15648792 0.0 TcpOutSegs 58659110 0.0 # Average of 3.7 4K segments per TSO packet TcpExtTCPDelivered 58654791 0.0 TcpExtTCPDeliveredCE 19 0.0 After patch: ~# echo 9 >/proc/sys/net/ipv4/tcp_tso_rtt_log ~# nstat -n;perf stat ./super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000;nstat|egrep "TcpInSegs|TcpOutSegs|TcpRetransSegs|Delivered" 96046 Performance counter stats for './super_netperf 600 -H otrv6 -l 20 -- -K dctcp -q 20000000': 48,982.58 msec task-clock # 2.104 CPUs utilized 186,014 context-switches # 3797.599 M/sec 3,109 cpu-migrations # 63.472 M/sec 941,180 page-faults # 19214.814 M/sec 153,459,763,868 cycles # 3132982.807 GHz (83.56%) 12,069,861,356 stalled-cycles-frontend # 7.87% frontend cycles idle (83.32%) 120,485,917,953 stalled-cycles-backend # 78.51% backend cycles idle (83.24%) 36,803,672,106 instructions # 0.24 insn per cycle # 3.27 stalled cycles per insn (83.18%) 5,947,266,275 branches # 121417383.427 M/sec (83.64%) 87,984,616 branch-misses # 1.48% of all branches (83.43%) 23.281200256 seconds time elapsed TcpInSegs 1434706 0.0 TcpOutSegs 58883378 0.0 # Average of 41 4K segments per TSO packet TcpExtTCPDelivered 58878971 0.0 TcpExtTCPDeliveredCE 9664 0.0 Signed-off-by:Eric Dumazet <edumazet@google.com> Reviewed-by:
Neal Cardwell <ncardwell@google.com> Link: https://lore.kernel.org/r/20220309015757.2532973-1-eric.dumazet@gmail.comSigned-off-by:
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Eric Dumazet authored
tcp_should_autocork() is evaluating if it makes senses to not immediately send current skb, hoping that user space will add more payload on it by the time TCP stack reacts to upcoming TX completions. If current skb got MSG_EOR mark, then we know that no further data will be added, it is therefore futile to wait. SOF_TIMESTAMPING_TX_ACK will become a bit more accurate, if prior packets are still in qdisc/device queues. Signed-off-by:
Soheil Hassas Yeganeh <soheil@google.com> Link: https://lore.kernel.org/r/20220309054706.2857266-1-eric.dumazet@gmail.comSigned-off-by:
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Michael Sit Wei Hong authored
Add PCI ID for Ethernet TSN Controller on ADL-N. Signed-off-by:
Michael Sit Wei Hong <michael.wei.hong.sit@intel.com> Link: https://lore.kernel.org/r/20220309033415.3370250-1-michael.wei.hong.sit@intel.comSigned-off-by:
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Dust Li authored
when CONFIG_SYSCTL not set, smc_sysctl_net_init/exit need to be static inline to avoid missing-prototypes if compile with W=1. Since __net_exit has noinline annotation when CONFIG_NET_NS not set, it should not be used with static inline. So remove the __net_init/exit when CONFIG_SYSCTL not set. Fixes: 7de8eb0d ("net/smc: fix compile warning for smc_sysctl") Signed-off-by:
Dust Li <dust.li@linux.alibaba.com> Link: https://lore.kernel.org/r/20220309033051.41893-1-dust.li@linux.alibaba.comSigned-off-by:
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Jakub Kicinski authored
Dimitris Michailidis says: ==================== net/fungible: fix errors when CONFIG_TLS_DEVICE=n This pair of patches fix compile errors in funeth when CONFIG_TLS_DEVICE=n. The errors are due to symbols that are not defined in this config but are used in code guarded by "if (IS_ENABLED(CONFIG_TLS_DEVICE) ..." One option is to place this code under preprocessor guards that will keep the compiler from looking at the code. The option adopted here is to define the offending symbols also when CONFIG_TLS_DEVICE=n. The first patch does this for two functions in tls.h. The second does the same for driver symbols and makes tls.h inclusion unconditional. ==================== Link: https://lore.kernel.org/r/20220309034032.405212-1-dmichail@fungible.comSigned-off-by:
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Dimitris Michailidis authored
Include the TLS headers unconditionally and define driver TLS symbols used in code compiled also when CONFIG_TLS_DEVICE=n to fix the following errors: ../drivers/net/ethernet/fungible/funeth/funeth_tx.c: In function ‘write_pkt_desc’: ../drivers/net/ethernet/fungible/funeth/funeth_tx.c:244:13: error: implicit declaration of function ‘tls_driver_ctx’ [-Werror=implicit-function-declaration] 244 | tls_ctx = tls_driver_ctx(skb->sk, TLS_OFFLOAD_CTX_DIR_TX); | ^~~~~~~~~~~~~~ ../drivers/net/ethernet/fungible/funeth/funeth_tx.c:244:37: error: ‘TLS_OFFLOAD_CTX_DIR_TX’ undeclared (first use in this function) 244 | tls_ctx = tls_driver_ctx(skb->sk, TLS_OFFLOAD_CTX_DIR_TX); | ^~~~~~~~~~~~~~~~~~~~~~ ../drivers/net/ethernet/fungible/funeth/funeth_tx.c:244:37: note: each undeclared identifier is reported only once for each function it appears in ../drivers/net/ethernet/fungible/funeth/funeth_tx.c:245:23: error: dereferencing pointer to incomplete type ‘struct fun_ktls_tx_ctx’ 245 | tls->tlsid = tls_ctx->tlsid; | ^~ ../drivers/net/ethernet/fungible/funeth/funeth_tx.c: In function ‘fun_start_xmit’: ../drivers/net/ethernet/fungible/funeth/funeth_tx.c:310:6: error: implicit declaration of function ‘tls_is_sk_tx_device_offloaded’ [-Werror=implicit-function-declaration] 310 | tls_is_sk_tx_device_offloaded(skb->sk)) { | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ../drivers/net/ethernet/fungible/funeth/funeth_tx.c:311:9: error: implicit declaration of function ‘fun_tls_tx’; did you mean ‘fun_xdp_tx’? [-Werror=implicit-function-declaration] 311 | skb = fun_tls_tx(skb, q, &tls_len); | ^~~~~~~~~~ | fun_xdp_tx ../drivers/net/ethernet/fungible/funeth/funeth_tx.c:311:7: warning: assignment to ‘struct sk_buff *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion] 311 | skb = fun_tls_tx(skb, q, &tls_len); | ^ Fixes: db37bc17 ("net/funeth: add the data path") Reported-by:Randy Dunlap <rdunlap@infradead.org> Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
Dimitris Michailidis <dmichail@fungible.com> Signed-off-by:
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Dimitris Michailidis authored
Having the definitions of {__,}tls_driver_ctx() under an #if guard means code referencing them also needs to rely on the preprocessor. The protection doesn't appear needed so make the definitions unconditional. Fixes: db37bc17 ("net/funeth: add the data path") Reported-by: -
Jakub Kicinski authored
This reverts: commit 02acd399 ("bnxt_en: parse result field when NVRAM package install fails") commit 22f5dba5 ("bnxt_en: add an nvm test for hw diagnose") commit bafed3f2 ("bnxt_en: implement hw health reporter") These patches are still under discussion / I don't think they are right, and since the authors don't reply promptly let me lessen my load of "things I need to resolve before next release" and revert them. Acked-by:
Michael Chan <michael.chan@broadcom.com> Link: https://lore.kernel.org/r/20220308173659.304915-1-kuba@kernel.orgSigned-off-by:
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Heiner Kallweit authored
If HW doesn't support PTP, then it doesn't support it. This is neither a problem nor can the user do something about it. Therefore change the message level to info. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Link: https://lore.kernel.org/r/ee685745-f1ab-e9bf-f20e-077d55dff441@gmail.comSigned-off-by:
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Chen Yu authored
There is occasional suspend error from e1000e which blocks the system from further suspending. And the issue was found on a WhiskeyLake-U platform with I219-V: [ 20.078957] PM: pci_pm_suspend(): e1000e_pm_suspend+0x0/0x780 [e1000e] returns -2 [ 20.078970] PM: dpm_run_callback(): pci_pm_suspend+0x0/0x170 returns -2 [ 20.078974] e1000e 0000:00:1f.6: PM: pci_pm_suspend+0x0/0x170 returned -2 after 371012 usecs [ 20.078978] e1000e 0000:00:1f.6: PM: failed to suspend async: error -2 According to the code flow, this might be caused by broken MDI read/write to PHY registers. However currently the code does not tell us which register is broken. Thus enhance the debug information to print the offender PHY register. So the next the issue is reproduced, this information could be used for narrow down. Acked-by:
Paul Menzel <pmenzel@molgen.mpg.de> Reported-by:
Todd Brandt <todd.e.brandt@intel.com> Signed-off-by:
Chen Yu <yu.c.chen@intel.com> Tested-by:
Naama Meir <naamax.meir@linux.intel.com> Signed-off-by:
Tony Nguyen <anthony.l.nguyen@intel.com> Link: https://lore.kernel.org/r/20220308172030.451566-1-anthony.l.nguyen@intel.comSigned-off-by:
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Min Li authored
rsmu (Renesas Synchronization Management Unit ) driver is located in drivers/mfd and responsible for creating multiple devices including idt82p33 phc, which will then use the exposed regmap and mutex handle to access i2c/spi bus. Signed-off-by:
Min Li <min.li.xe@renesas.com> Acked-by:
Richard Cochran <richardcochran@gmail.com> Link: https://lore.kernel.org/r/1646748651-16811-1-git-send-email-min.li.xe@renesas.comSigned-off-by:
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