summaryrefslogtreecommitdiffstats
path: root/drivers/net/arcnet (follow)
Commit message (Collapse)AuthorAgeFilesLines
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2017-11-042-0/+2
|\ | | | | | | | | | | | | Files removed in 'net-next' had their license header updated in 'net'. We take the remove from 'net-next'. Signed-off-by: David S. Miller <davem@davemloft.net>
| * License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman2017-11-022-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* | drivers/net: arcnet: Convert timers to use timer_setup()Kees Cook2017-10-271-3/+4
| | | | | | | | | | | | | | | | | | | | | | In preparation for unconditionally passing the struct timer_list pointer to all timer callbacks, switch to using the new timer_setup() and from_timer() to pass the timer pointer explicitly. Cc: Michael Grzeschik <m.grzeschik@pengutronix.de> Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* | drivers: net: arcnet: use setup_timer() helper.Allen Pais2017-09-211-3/+1
|/ | | | | | | | Use setup_timer function instead of initializing timer with the function and data fields. Signed-off-by: Allen Pais <allen.lkml@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* arcnet: com20020-pci: constify attribute_group structures.Arvind Yadav2017-07-181-1/+1
| | | | | | | | | | | | | | | | | attribute_group are not supposed to change at runtime. All functions working with attribute_group provided by <linux/netdevice.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 3409 948 28 4385 1121 drivers/net/arcnet/com20020-pci.o File size After adding 'const': text data bss dec hex filename 3473 884 28 4385 1121 drivers/net/arcnet/com20020-pci.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers: net: add missing interrupt.h includeFlorian Westphal2017-07-181-1/+1
| | | | | | | | | these drivers use tasklets or irq apis, but don't include interrupt.h. Once flow cache is removed the implicit interrupt.h inclusion goes away which will break the build. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* arcnet: com20020-pci: Fix an error handling path in 'com20020pci_probe()'Christophe Jaillet2017-07-071-2/+4
| | | | | | | | If this memory allocation fails, we should go through the error handling path as done everywhere else in this function before returning. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2017-06-304-8/+9
|\ | | | | | | | | | | | | A set of overlapping changes in macvlan and the rocker driver, nothing serious. Signed-off-by: David S. Miller <davem@davemloft.net>
| * arcnet: com20020-pci: add missing pdev setup in netdev structureMichael Grzeschik2017-06-291-0/+1
| | | | | | | | | | | | | | | | We add the pdev data to the pci devices netdev structure. This way the interface get consistent device names in the userspace (udev). Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * arcnet: com20020-pci: fix dev_id calculationMichael Grzeschik2017-06-291-2/+3
| | | | | | | | | | | | | | | | The dev_id was miscalculated. Only the two bits 4-5 are relevant for the MA1 card. PCIARC1 and PCIFB2 use the four bits 4-7 for id selection. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * arcnet: com20020: remove needless base_addr assignmentMichael Grzeschik2017-06-291-2/+0
| | | | | | | | | | | | | | The assignment is superfluous. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Trivial fix to spelling mistake in arc_printk messageColin Ian King2017-06-291-1/+1
| | | | | | | | | | | | Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * arcnet: change irq handler to lock irqsaveMichael Grzeschik2017-06-291-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch prevents the arcnet driver from the following deadlock. [ 41.273910] ====================================================== [ 41.280397] [ INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected ] [ 41.287433] 4.4.0-00034-gc0ae784 #536 Not tainted [ 41.292366] ------------------------------------------------------ [ 41.298863] arcecho/233 [HC0[0]:SC0[2]:HE0:SE0] is trying to acquire: [ 41.305628] (&(&lp->lock)->rlock){+.+...}, at: [<bf083bc8>] arcnet_send_packet+0x60/0x1c0 [arcnet] [ 41.315199] [ 41.315199] and this task is already holding: [ 41.321324] (_xmit_ARCNET#2){+.-...}, at: [<c06b934c>] packet_direct_xmit+0xfc/0x1c8 [ 41.329593] which would create a new lock dependency: [ 41.334893] (_xmit_ARCNET#2){+.-...} -> (&(&lp->lock)->rlock){+.+...} [ 41.341801] [ 41.341801] but this new dependency connects a SOFTIRQ-irq-safe lock: [ 41.350108] (_xmit_ARCNET#2){+.-...} ... which became SOFTIRQ-irq-safe at: [ 41.357539] [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.362677] [<c063ab8c>] dev_watchdog+0x5c/0x264 [ 41.367723] [<c0094edc>] call_timer_fn+0x6c/0xf4 [ 41.372759] [<c00950b8>] run_timer_softirq+0x154/0x210 [ 41.378340] [<c0036b30>] __do_softirq+0x144/0x298 [ 41.383469] [<c0036fb4>] irq_exit+0xcc/0x130 [ 41.388138] [<c0085c50>] __handle_domain_irq+0x60/0xb4 [ 41.393728] [<c0014578>] __irq_svc+0x58/0x78 [ 41.398402] [<c0010274>] arch_cpu_idle+0x24/0x3c [ 41.403443] [<c007127c>] cpu_startup_entry+0x1f8/0x25c [ 41.409029] [<c09adc90>] start_kernel+0x3c0/0x3cc [ 41.414170] [ 41.414170] to a SOFTIRQ-irq-unsafe lock: [ 41.419931] (&(&lp->lock)->rlock){+.+...} ... which became SOFTIRQ-irq-unsafe at: [ 41.427996] ... [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.433409] [<bf083d54>] arcnet_interrupt+0x2c/0x800 [arcnet] [ 41.439646] [<c0089120>] handle_nested_irq+0x8c/0xec [ 41.445063] [<c03c1170>] regmap_irq_thread+0x190/0x314 [ 41.450661] [<c0087244>] irq_thread_fn+0x1c/0x34 [ 41.455700] [<c0087548>] irq_thread+0x13c/0x1dc [ 41.460649] [<c0050f10>] kthread+0xe4/0xf8 [ 41.465158] [<c000f810>] ret_from_fork+0x14/0x24 [ 41.470207] [ 41.470207] other info that might help us debug this: [ 41.470207] [ 41.478627] Possible interrupt unsafe locking scenario: [ 41.478627] [ 41.485763] CPU0 CPU1 [ 41.490521] ---- ---- [ 41.495279] lock(&(&lp->lock)->rlock); [ 41.499414] local_irq_disable(); [ 41.505636] lock(_xmit_ARCNET#2); [ 41.511967] lock(&(&lp->lock)->rlock); [ 41.518741] <Interrupt> [ 41.521490] lock(_xmit_ARCNET#2); [ 41.525356] [ 41.525356] *** DEADLOCK *** [ 41.525356] [ 41.531587] 1 lock held by arcecho/233: [ 41.535617] #0: (_xmit_ARCNET#2){+.-...}, at: [<c06b934c>] packet_direct_xmit+0xfc/0x1c8 [ 41.544355] the dependencies between SOFTIRQ-irq-safe lock and the holding lock: [ 41.552362] -> (_xmit_ARCNET#2){+.-...} ops: 27 { [ 41.557357] HARDIRQ-ON-W at: [ 41.560664] [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.567445] [<c063ba28>] dev_deactivate_many+0x114/0x304 [ 41.574866] [<c063bc3c>] dev_deactivate+0x24/0x38 [ 41.581646] [<c0630374>] linkwatch_do_dev+0x40/0x74 [ 41.588613] [<c06305d8>] __linkwatch_run_queue+0xec/0x140 [ 41.596120] [<c0630658>] linkwatch_event+0x2c/0x34 [ 41.602991] [<c004af30>] process_one_work+0x188/0x40c [ 41.610131] [<c004b200>] worker_thread+0x4c/0x480 [ 41.616912] [<c0050f10>] kthread+0xe4/0xf8 [ 41.623048] [<c000f810>] ret_from_fork+0x14/0x24 [ 41.629735] IN-SOFTIRQ-W at: [ 41.633039] [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.639820] [<c063ab8c>] dev_watchdog+0x5c/0x264 [ 41.646508] [<c0094edc>] call_timer_fn+0x6c/0xf4 [ 41.653190] [<c00950b8>] run_timer_softirq+0x154/0x210 [ 41.660425] [<c0036b30>] __do_softirq+0x144/0x298 [ 41.667201] [<c0036fb4>] irq_exit+0xcc/0x130 [ 41.673518] [<c0085c50>] __handle_domain_irq+0x60/0xb4 [ 41.680754] [<c0014578>] __irq_svc+0x58/0x78 [ 41.687077] [<c0010274>] arch_cpu_idle+0x24/0x3c [ 41.693769] [<c007127c>] cpu_startup_entry+0x1f8/0x25c [ 41.701006] [<c09adc90>] start_kernel+0x3c0/0x3cc [ 41.707791] INITIAL USE at: [ 41.711003] [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.717696] [<c063ba28>] dev_deactivate_many+0x114/0x304 [ 41.725026] [<c063bc3c>] dev_deactivate+0x24/0x38 [ 41.731718] [<c0630374>] linkwatch_do_dev+0x40/0x74 [ 41.738593] [<c06305d8>] __linkwatch_run_queue+0xec/0x140 [ 41.746011] [<c0630658>] linkwatch_event+0x2c/0x34 [ 41.752789] [<c004af30>] process_one_work+0x188/0x40c [ 41.759847] [<c004b200>] worker_thread+0x4c/0x480 [ 41.766541] [<c0050f10>] kthread+0xe4/0xf8 [ 41.772596] [<c000f810>] ret_from_fork+0x14/0x24 [ 41.779198] } [ 41.780945] ... key at: [<c124d620>] netdev_xmit_lock_key+0x38/0x1c8 [ 41.788192] ... acquired at: [ 41.791309] [<c007bed8>] lock_acquire+0x70/0x90 [ 41.796361] [<c06f9140>] _raw_spin_lock_irqsave+0x40/0x54 [ 41.802324] [<bf083bc8>] arcnet_send_packet+0x60/0x1c0 [arcnet] [ 41.808844] [<c06b9380>] packet_direct_xmit+0x130/0x1c8 [ 41.814622] [<c06bc7e4>] packet_sendmsg+0x3b8/0x680 [ 41.820034] [<c05fe8b0>] sock_sendmsg+0x14/0x24 [ 41.825091] [<c05ffd68>] SyS_sendto+0xb8/0xe0 [ 41.829956] [<c05ffda8>] SyS_send+0x18/0x20 [ 41.834638] [<c000f780>] ret_fast_syscall+0x0/0x1c [ 41.839954] [ 41.841514] the dependencies between the lock to be acquired and SOFTIRQ-irq-unsafe lock: [ 41.850302] -> (&(&lp->lock)->rlock){+.+...} ops: 5 { [ 41.855644] HARDIRQ-ON-W at: [ 41.858945] [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.865726] [<bf083d54>] arcnet_interrupt+0x2c/0x800 [arcnet] [ 41.873607] [<c0089120>] handle_nested_irq+0x8c/0xec [ 41.880666] [<c03c1170>] regmap_irq_thread+0x190/0x314 [ 41.887901] [<c0087244>] irq_thread_fn+0x1c/0x34 [ 41.894593] [<c0087548>] irq_thread+0x13c/0x1dc [ 41.901195] [<c0050f10>] kthread+0xe4/0xf8 [ 41.907338] [<c000f810>] ret_from_fork+0x14/0x24 [ 41.914025] SOFTIRQ-ON-W at: [ 41.917328] [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.924106] [<bf083d54>] arcnet_interrupt+0x2c/0x800 [arcnet] [ 41.931981] [<c0089120>] handle_nested_irq+0x8c/0xec [ 41.939028] [<c03c1170>] regmap_irq_thread+0x190/0x314 [ 41.946264] [<c0087244>] irq_thread_fn+0x1c/0x34 [ 41.952954] [<c0087548>] irq_thread+0x13c/0x1dc [ 41.959548] [<c0050f10>] kthread+0xe4/0xf8 [ 41.965689] [<c000f810>] ret_from_fork+0x14/0x24 [ 41.972379] INITIAL USE at: [ 41.975595] [<c06f8fc8>] _raw_spin_lock+0x30/0x40 [ 41.982283] [<bf083d54>] arcnet_interrupt+0x2c/0x800 [arcnet] [ 41.990063] [<c0089120>] handle_nested_irq+0x8c/0xec [ 41.997027] [<c03c1170>] regmap_irq_thread+0x190/0x314 [ 42.004172] [<c0087244>] irq_thread_fn+0x1c/0x34 [ 42.010766] [<c0087548>] irq_thread+0x13c/0x1dc [ 42.017267] [<c0050f10>] kthread+0xe4/0xf8 [ 42.023314] [<c000f810>] ret_from_fork+0x14/0x24 [ 42.029903] } [ 42.031648] ... key at: [<bf0854cc>] __key.42091+0x0/0xfffff0f8 [arcnet] [ 42.039255] ... acquired at: [ 42.042372] [<c007bed8>] lock_acquire+0x70/0x90 [ 42.047413] [<c06f9140>] _raw_spin_lock_irqsave+0x40/0x54 [ 42.053364] [<bf083bc8>] arcnet_send_packet+0x60/0x1c0 [arcnet] [ 42.059872] [<c06b9380>] packet_direct_xmit+0x130/0x1c8 [ 42.065634] [<c06bc7e4>] packet_sendmsg+0x3b8/0x680 [ 42.071030] [<c05fe8b0>] sock_sendmsg+0x14/0x24 [ 42.076069] [<c05ffd68>] SyS_sendto+0xb8/0xe0 [ 42.080926] [<c05ffda8>] SyS_send+0x18/0x20 [ 42.085601] [<c000f780>] ret_fast_syscall+0x0/0x1c [ 42.090918] [ 42.092481] [ 42.092481] stack backtrace: [ 42.097065] CPU: 0 PID: 233 Comm: arcecho Not tainted 4.4.0-00034-gc0ae784 #536 [ 42.104751] Hardware name: Generic AM33XX (Flattened Device Tree) [ 42.111183] [<c0017ec8>] (unwind_backtrace) from [<c00139d0>] (show_stack+0x10/0x14) [ 42.119337] [<c00139d0>] (show_stack) from [<c02a82c4>] (dump_stack+0x8c/0x9c) [ 42.126937] [<c02a82c4>] (dump_stack) from [<c0078260>] (check_usage+0x4bc/0x63c) [ 42.134815] [<c0078260>] (check_usage) from [<c0078438>] (check_irq_usage+0x58/0xb0) [ 42.142964] [<c0078438>] (check_irq_usage) from [<c007aaa0>] (__lock_acquire+0x1524/0x20b0) [ 42.151740] [<c007aaa0>] (__lock_acquire) from [<c007bed8>] (lock_acquire+0x70/0x90) [ 42.159886] [<c007bed8>] (lock_acquire) from [<c06f9140>] (_raw_spin_lock_irqsave+0x40/0x54) [ 42.168768] [<c06f9140>] (_raw_spin_lock_irqsave) from [<bf083bc8>] (arcnet_send_packet+0x60/0x1c0 [arcnet]) [ 42.179115] [<bf083bc8>] (arcnet_send_packet [arcnet]) from [<c06b9380>] (packet_direct_xmit+0x130/0x1c8) [ 42.189182] [<c06b9380>] (packet_direct_xmit) from [<c06bc7e4>] (packet_sendmsg+0x3b8/0x680) [ 42.198059] [<c06bc7e4>] (packet_sendmsg) from [<c05fe8b0>] (sock_sendmsg+0x14/0x24) [ 42.206199] [<c05fe8b0>] (sock_sendmsg) from [<c05ffd68>] (SyS_sendto+0xb8/0xe0) [ 42.213978] [<c05ffd68>] (SyS_sendto) from [<c05ffda8>] (SyS_send+0x18/0x20) [ 42.221388] [<c05ffda8>] (SyS_send) from [<c000f780>] (ret_fast_syscall+0x0/0x1c) Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> --- v1 -> v2: removed unneeded zero assignment of flags Signed-off-by: David S. Miller <davem@davemloft.net>
* | arcnet: com20020-pci: add support for PCIFB2 cardMichael Grzeschik2017-06-291-0/+34
| | | | | | | | | | | | | | | | | | We add support for the PCIFB2 card from EAE. Beside other cards, this card has the backplane mode enabled by default. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | arcnet: com20020-pci: handle backplane mode depending on card typeMichael Grzeschik2017-06-291-0/+2
| | | | | | | | | | | | | | | | We read the backplane mode of each subcard from bits 2 and 3 of the misc register. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | arcnet: com20020-pci: add attribute to readback backplane statusMichael Grzeschik2017-06-291-0/+22
| | | | | | | | | | | | | | | | We add the sysfs interface the read back the backplane status of the interface. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | arcnet: add err_skb package for package status feedbackMichael Grzeschik2017-06-292-10/+68
| | | | | | | | | | | | | | | | | | | | We need to track the status of our queued packages. This way the driving process knows if failed packages need to be retransmitted. For this purpose we queue the transferred/failed packages back into the err_skb message queue added with some status information. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | networking: make skb_push & __skb_push return void pointersJohannes Berg2017-06-164-4/+4
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It seems like a historic accident that these return unsigned char *, and in many places that means casts are required, more often than not. Make these functions return void * and remove all the casts across the tree, adding a (u8 *) cast only where the unsigned char pointer was used directly, all done with the following spatch: @@ expression SKB, LEN; typedef u8; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) @@ expression SKB, LEN; identifier fn = { skb_push, __skb_push, skb_push_rcsum }; @@ - fn(SKB, LEN)[0] + *(u8 *)fn(SKB, LEN) Note that the last part there converts from push(...)[0] to the more idiomatic *(u8 *)push(...). Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Annotate hardware config module parameters in drivers/net/arcnet/David Howells2017-04-203-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | When the kernel is running in secure boot mode, we lock down the kernel to prevent userspace from modifying the running kernel image. Whilst this includes prohibiting access to things like /dev/mem, it must also prevent access by means of configuring driver modules in such a way as to cause a device to access or modify the kernel image. To this end, annotate module_param* statements that refer to hardware configuration and indicate for future reference what type of parameter they specify. The parameter parser in the core sees this information and can skip such parameters with an error message if the kernel is locked down. The module initialisation then runs as normal, but just sees whatever the default values for those parameters is. Note that we do still need to do the module initialisation because some drivers have viable defaults set in case parameters aren't specified and some drivers support automatic configuration (e.g. PNP or PCI) in addition to manually coded parameters. This patch annotates drivers in drivers/net/arcnet/. Suggested-by: Alan Cox <gnomes@lxorguk.ukuu.org.uk> Signed-off-by: David Howells <dhowells@redhat.com> cc: Michael Grzeschik <m.grzeschik@pengutronix.de> cc: netdev@vger.kernel.org
* lib/vsprintf.c: remove %Z supportAlexey Dobriyan2017-02-281-1/+1
| | | | | | | | | | | | | | | | | | Now that %z is standartised in C99 there is no reason to support %Z. Unlike %L it doesn't even make format strings smaller. Use BUILD_BUG_ON in a couple ATM drivers. In case anyone didn't notice lib/vsprintf.o is about half of SLUB which is in my opinion is quite an achievement. Hopefully this patch inspires someone else to trim vsprintf.c more. Link: http://lkml.kernel.org/r/20170103230126.GA30170@avx2 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* arcnet: com90xx: add __init attributeJulia Lawall2016-04-201-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Add __init attribute on a function that is only called from other __init functions and that is not inlined, at least with gcc version 4.8.4 on an x86 machine with allyesconfig. Currently, the function is put in the .text.unlikely segment. Declaring it as __init will cause it to be put in the .init.text and to disappear after initialization. The result of objdump -x on the function before the change is as follows: 0000000000000000 l F .text.unlikely 00000000000000bf check_mirror And after the change it is as follows: 0000000000000000 l F .init.text 00000000000000ba check_mirror Done with the help of Coccinelle. The semantic patch checks for local static non-init functions that are called from an __init function and are not called from any other function. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Michael Grzeschik <mgr@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* arcnet/com20020: add LEDS_CLASS dependencyArnd Bergmann2015-11-031-0/+1
| | | | | | | | | | | | | | | | | | The newly added led trigger support in the com20020-pci driver causes build errors when CONFIG_LEDS_CLASS is disabled: drivers/built-in.o: In function `com20020pci_probe': (.text+0x185dc4): undefined reference to `devm_led_classdev_register' (.text+0x185dd8): undefined reference to `devm_led_classdev_register' This adds a Kconfig dependency to prevent the invalid configurations. Other drivers appear to be split 50:50 between 'select' and 'depends on' for this symbol, I picked 'depends on' as I could not find a common policy and it generally causes fewer problems. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 8890624a4e8c ("arcnet: com20020-pci: add led trigger support") Signed-off-by: David S. Miller <davem@davemloft.net>
* arcnet: add netif_carrier_on/off for reconnectMichael Grzeschik2015-10-262-0/+27
| | | | | | | | | | The arcnet device has no interrupt to detect if the link has changed from disconnected to connected. This patch adds an timer to toggle the link detection. The timer will get retriggered as long as the reconnection interrupts accure. If the recon interrupts hold off for >1s we define the connection stable again. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* arcnet: com20020-pci: add led trigger supportMichael Grzeschik2015-10-264-0/+174
| | | | | | | | The EAE PLX-PCI card has special leds on the the main io pci resource bar. This patch adds support to trigger the conflict and data leds with the packages. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* arcnet: com20020-pci: add rotary index supportMichael Grzeschik2015-10-262-0/+37
| | | | | | | | | The EAE PLX-PCI card has a special rotary encoder to configure the address of every card individually. We take this information for the initial setup of the cards dev_id. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* arcnet: com20020-pci: set dev_port to the subdevice indexMichael Grzeschik2015-10-261-0/+1
| | | | | | | | This patch sets the dev_port according to the index of the card. This can be used by udev to name the ports in userspace. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* arcnet: com20020: add enable and disable device on open/closeMichael Grzeschik2015-10-261-10/+29
| | | | | | | | | This patch changes the driver to properly work with the linux netif interface. The controller gets enabled on open and disabled on close. Therefor it removes every bogus start of the xceiver. It only gets enabled on com20020_open and disabled on com20020_close. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* arcnet: move dev_free_skb to its only userMichael Grzeschik2015-10-261-8/+2
| | | | | | | | The call for dev_free_skb is done only once. This patch moves its call to its only user and removes the obsolete condition variable. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netDavid S. Miller2015-09-271-1/+1
|\ | | | | | | | | | | | | | | | | | | Conflicts: net/ipv4/arp.c The net/ipv4/arp.c conflict was one commit adding a new local variable while another commit was deleting one. Signed-off-by: David S. Miller <davem@davemloft.net>
| * ARCNET: fix hard_header_len limitMichael Grzeschik2015-09-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For arcnet the bare minimum header only contains the 4 bytes to specify source, dest and offset (1, 1 and 2 bytes respectively). The corresponding struct is struct arc_hardware. The struct archdr contains additionally a union of possible soft headers. When doing $insertusecasehere packets might well include short (or even no?) soft headers. For this reason only use arc_hardware instead of archdr to determine the hard_header_len for an arcnet device. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* | arcnet: capmode: remove extra functionMichael Grzeschik2015-09-231-6/+3
| | | | | | | | | | | | | | This patch cleans the capmode protocol module. It removes the obsolete function arcnet_cap_init and replaces printk with pr_info. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: arc-rawmode: reorder module functionsMichael Grzeschik2015-09-231-46/+38
| | | | | | | | | | | | | | This patch moves the module_init and module_exit patches to the end of the file. It also replaces the printk with pr_info. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: com20020: replace magic numbers with readable macrosMichael Grzeschik2015-09-233-8/+11
| | | | | | | | | | | | | | | | This patch replaces all magic numbers in the driver with proper named macros. For the case of XTOcfg and STARTIOcmd it introduces the new macros. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: reformat structs to C99 formatMichael Grzeschik2015-09-232-14/+35
| | | | | | | | | | | | | | This patch changes the macro definitions to match the C99 formating. This improves the readability. Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Remove unused arcnet_<I/O>w macrosJoe Perches2015-09-231-10/+0
| | | | | | | | | | | | | | The word length macros are unused. Remove them. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Add com9026.h to standardize COM9026_REG_<foo>Joe Perches2015-09-235-34/+21
| | | | | | | | | | | | | | Deduplicate the COM9026 registers. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Remove function pointer macro indirectionsJoe Perches2015-09-232-37/+32
| | | | | | | | | | | | | | | | | | | | It's clearer to use function pointer calls directly instead of the macro indirections of ARCRESET, ACOMMAND, ASTATUS, and AINTMASK. Remove the now unused macros too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: com90xx: Use arcnet_readb/writeb routinesJoe Perches2015-09-231-12/+17
| | | | | | | | | | | | | | | | Simplify and make consistent the current uses of readb/writeb by using the newly introduced arcnet_<I/O> equivalents. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: arc-rimi: Use arcnet_<I/O> routinesJoe Perches2015-09-231-30/+25
| | | | | | | | | | | | | | | | | | | | | | | | Simplify and make consistent the current uses of readb/writeb by using the newly introduced arcnet_<I/O> equivalents. o Add new #defines for register offsets o Remove old #defines that included the ioaddr o Remove obfuscating macros by expanding them in-place where appropriate Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: arcdevice.h: Add arcnet_readb and arcnet_writebJoe Perches2015-09-231-0/+5
| | | | | | | | | | | | | | | | | | Use the same indirection as the other arcnet_<I/O> macros. Neither of these new macros add the BUS_ALIGN use for 8 bit devices on 16 bit busses. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: com90xx: Use arcnet_<I/O> routinesJoe Perches2015-09-231-34/+33
| | | | | | | | | | | | | | | | | | | | | | | | Simplify and make consistent the current uses of inb/outb by using the newly introduced arcnet_<I/O> equivalents. o Add new #defines for register offsets o Remove old #defines that included the ioaddr o Remove obfuscating macros by expanding them in-place where appropriate Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: com90io: Use arcnet_<I/O> routinesJoe Perches2015-09-231-53/+48
| | | | | | | | | | | | | | | | | | | | | | | | Simplify and make consistent the current uses of inb/outb by using the newly introduced arcnet_<I/O> equivalents. o Add new #defines for register offsets o Remove old #defines that included the ioaddr o Remove obfuscating macros by expanding them in-place where appropriate Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: com20020: Use arcnet_<I/O> routinesJoe Perches2015-09-236-122/+114
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify and make consistent the current uses of inb/outb by using the newly introduced arcnet_<I/O> equivalents. o Add new #defines for register offsets There is an register offset, 8, that is unnamed and used as-is. o Remove old #defines that included the ioaddr o Remove obfuscating macros by expanding them in-place where appropriate o Create static inline com20020_set_subaddress for the SET_SUBADR macro There is an unused arcnet config entry CONFIGSA100_CT6001 which added a special #define BUS_ALIGN which was introduced but never used in fullhist git tree commit 22cfce4b82b0 ("[ARCNET]: Fixes.") in Nov 2004 for Linux v2.6.10. This BUS_ALIGN #define tries to allow 8 bit devices to work on a 16 bit bus by aligning addresses to 16 bit boundaries. Move this currently unused CONFIG_SA1100_CT6001 BUS_ALIGN macro from com20020.h to arcdevice.h. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Add arcnet_<I/O> macrosJoe Perches2015-09-231-0/+25
| | | | | | | | | | | | | | | | | | | | arcnet uses an I/O scheme which can align I/O addresses to word boundaries on different architectures. Add arcnet specific macros which can hide this alignment calculation. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Make a char * array const char * constJoe Perches2015-09-231-5/+10
| | | | | | | | | | | | | | | | | | Might as well be specific about the use of this array. Add a commment questioning the indexing too. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Move files out of include/linuxJoe Perches2015-09-2314-21/+519
| | | | | | | | | | | | | | | | | | | | | | | | | | These #include files don't need to be in the include/linux directory as they can be local to drivers/net/arcnet/ Move them and update the #include statements. Update the MAINTAINERS file pattern by deleting arcdevice from the NETWORKING block as arcnet is currently unmaintained. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Wrap some long linesJoe Perches2015-09-2310-46/+75
| | | | | | | | | | | | | | Just neatening. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Remove pointer comparisons to NULLJoe Perches2015-09-234-6/+6
| | | | | | | | | | | | | | Use direct tests of pointer instead. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Remove assignments from ifsJoe Perches2015-09-233-3/+7
| | | | | | | | | | | | | | Move the assignment above the if like general kernel style. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Remove unnecessary OOM messagesJoe Perches2015-09-235-10/+2
| | | | | | | | | | | | | | Alloc failures have generic stack dumps so these are redundant. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 21:54:07 +0100