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* 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 Dobriyan2017-02-271-1/+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 Lawall2016-04-191-1/+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. Miller2015-09-261-1/+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 Grzeschik2015-09-171-1/+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>
* | arcnet: Move EXPORT_SYMBOL after declarationsJoe Perches2015-09-231-15/+18
| | | | | | | | | | | | | | Use the normal kernel style for EXPORT_SYMBOL. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Convert printk to pr_<level>Joe Perches2015-09-2312-64/+65
| | | | | | | | | | | | | | | | | | | | Use the more current logging style. Remove #define VERSION, use pr_info normally. Add pr_fmt with "arcnet:" prefixes and KBUILD_MODNAME. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Convert BUGMSG and BUGMSG2 to arc_prink and arc_contJoe Perches2015-09-2311-312/+338
| | | | | | | | | | | | | | | | | | | | These macros don't actually represent BUG uses but are more commonly used as logging macros, so use a more kernel style macro. Convert the BUGMSG from a netdev_ like use to actually use netdev_<level>. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Expand odd BUGLVL macro with if and usesJoe Perches2015-09-2311-50/+84
| | | | | | | | | | | | | | | | | | Don't hide what should be obvious. Make the macro a simple test instead of using if and test. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Use network block comment styleJoe Perches2015-09-2311-132/+95
| | | | | | | | | | | | | | Conformity can be useful. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
* | arcnet: Use include/linux path for asmJoe Perches2015-09-237-7/+7
| | | | | | | | | | | | | | Use the preferred kernel include path for asm paths. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
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