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path: root/drivers/nfc
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2017-06-18NFC: trf7970a: Convert to descriptor based GPIO interfaceMark Greer
The trf7970a driver uses the deprecated integer-based GPIO consumer interface so convert it to use the new descriptor-based GPIO consumer interface. Signed-off-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-06-18NFC: trf7970a: Remove support for 'vin-voltage-override' DT propertyMark Greer
The 'vin-voltage-override' DT property is used by the trf7970a driver to override the voltage presented to the driver by the regulator subsystem. This is unnecessary as properly specifying the regulator chain via DT properties will accomplish the same thing. Therefore, remove support for 'vin-voltage-override'. Signed-off-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-06-18NFC: trf7970a: Remove useless commentMark Greer
The last entry in the trf7970a_of_match[] table must be an empty entry to demarcate the end of the table. Currently, there is a comment indicating this but it is obvious so remove the comment. Signed-off-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-06-18NFC: trf7970a: Only check 'en2-rf-quirk' if EN2 is specifiedMark Greer
The quirk indicated by the 'en2-rf-quirk' device tree property is only relevant when there is a GPIO connected to the EN2 pin of the trf7970a. This means we should only check for 'en2-rf-quirk' when EN2 is specified in the 'ti,enable-gpios' property of the device tree. Signed-off-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-06-18NFC: trf7970a: Fix inaccurate comment in trf7970a_probe()Mark Greer
As of commit ce69b95ca4e4 ("NFC: Make EN2 pin optional in the TRF7970A driver"), only the GPIO for the 'EN' enable pin needs to be specified in the device tree so update the comments that says both 'EN' and 'EN2' must be specified. Signed-off-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-06-18NFC: trf7970a: Don't de-assert EN2 unless it was assertedMark Greer
When the trf7970a part has the bug related to 'en2-rf-quirk', the GPIO connected to the EN2 pin will not be asserted by the driver when powering up so it shouldn't be de-asserted when powering down. Signed-off-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-06-16networking: add and use skb_put_u8()Johannes Berg
Joe and Bjørn suggested that it'd be nicer to not have the cast in the fairly common case of doing *(u8 *)skb_put(skb, 1) = c; Add skb_put_u8() for this case, and use it across the code, using the following spatch: @@ expression SKB, C, S; typedef u8; identifier fn = {skb_put}; fresh identifier fn2 = fn ## "_u8"; @@ - *(u8 *)fn(SKB, S) = C; + fn2(SKB, C); Note that due to the "S", the spatch isn't perfect, it should have checked that S is 1, but there's also places that use a sizeof expression like sizeof(var) or sizeof(u8) etc. Turns out that nobody ever did something like *(u8 *)skb_put(skb, 2) = c; which would be wrong anyway since the second byte wouldn't be initialized. Suggested-by: Joe Perches <joe@perches.com> Suggested-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: make skb_push & __skb_push return void pointersJohannes Berg
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>
2017-06-16networking: make skb_pull & friends return void pointersJohannes Berg
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_pull, __skb_pull, skb_pull_inline, __pskb_pull_tail, __pskb_pull, pskb_pull }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_pull, __skb_pull, skb_pull_inline, __pskb_pull_tail, __pskb_pull, pskb_pull }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: make skb_put & friends return void pointersJohannes Berg
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 (skb_put, __skb_put and pskb_put) 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_put, __skb_put }; @@ - *(fn(SKB, LEN)) + *(u8 *)fn(SKB, LEN) @@ expression E, SKB, LEN; identifier fn = { skb_put, __skb_put }; type T; @@ - E = ((T *)(fn(SKB, LEN))) + E = fn(SKB, LEN) which actually doesn't cover pskb_put since there are only three users overall. A handful of stragglers were converted manually, notably a macro in drivers/isdn/i4l/isdn_bsdcomp.c and, oddly enough, one of the many instances in net/bluetooth/hci_sock.c. In the former file, I also had to fix one whitespace problem spatch introduced. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-16networking: introduce and use skb_put_data()Johannes Berg
A common pattern with skb_put() is to just want to memcpy() some data into the new space, introduce skb_put_data() for this. An spatch similar to the one for skb_put_zero() converts many of the places using it: @@ identifier p, p2; expression len, skb, data; type t, t2; @@ ( -p = skb_put(skb, len); +p = skb_put_data(skb, data, len); | -p = (t)skb_put(skb, len); +p = skb_put_data(skb, data, len); ) ( p2 = (t2)p; -memcpy(p2, data, len); | -memcpy(p, data, len); ) @@ type t, t2; identifier p, p2; expression skb, data; @@ t *p; ... ( -p = skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); | -p = (t *)skb_put(skb, sizeof(t)); +p = skb_put_data(skb, data, sizeof(t)); ) ( p2 = (t2)p; -memcpy(p2, data, sizeof(*p)); | -memcpy(p, data, sizeof(*p)); ) @@ expression skb, len, data; @@ -memcpy(skb_put(skb, len), data, len); +skb_put_data(skb, data, len); (again, manually post-processed to retain some comments) Reviewed-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-13networking: use skb_put_zero()Johannes Berg
Use the recently introduced helper to replace the pattern of skb_put() && memset(), this transformation was done with the following spatch: @@ identifier p; expression len; expression skb; @@ -p = skb_put(skb, len); -memset(p, 0, len); +p = skb_put_zero(skb, len); Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-17nfc: fix get_unaligned_...() misusesAl Viro
* if a local variable of type uint16_t is unaligned, your compiler is FUBAR * the whole point of get_unaligned_... is to avoid memcpy + ..._to_cpu(). Using it *after* memcpy() (into aligned object, no less) is pointless. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-17NFC: pn533: use constant off-stack buffer for sending acksMichał Mirosław
fix for WARN: usb 3-2.4.1: NFC: Exchanging data failed (error 0x13) llcp: nfc_llcp_recv: err -5 llcp: nfc_llcp_symm_timer: SYMM timeout ------------[ cut here ]------------ WARNING: CPU: 1 PID: 26397 at .../drivers/usb/core/hcd.c:1584 usb_hcd_map_urb_for_dma+0x370/0x550 transfer buffer not dma capable [...] Workqueue: events nfc_llcp_timeout_work [nfc] Call Trace: ? dump_stack+0x46/0x5a ? __warn+0xb9/0xe0 ? warn_slowpath_fmt+0x5a/0x80 ? usb_hcd_map_urb_for_dma+0x370/0x550 ? usb_hcd_submit_urb+0x2fb/0xa60 ? dequeue_entity+0x3f2/0xc30 ? pn533_usb_send_ack+0x5d/0x80 [pn533_usb] ? pn533_usb_abort_cmd+0x13/0x20 [pn533_usb] ? pn533_dep_link_down+0x32/0x70 [pn533] ? nfc_dep_link_down+0x87/0xd0 [nfc] [...] usb 3-2.4.1: NFC: Exchanging data failed (error 0x13) llcp: nfc_llcp_recv: err -5 llcp: nfc_llcp_symm_timer: SYMM timeout Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: trf7970a: Add device tree option of 1.8 Volt IO voltageGeoff Lansberry
The TRF7970A has configuration options for supporting hardware designs with 1.8 Volt or 3.3 Volt IO. This commit adds a device tree option, using a fixed regulator binding, for setting the io voltage to match the hardware configuration. If no option is supplied it defaults to 3.3 volt configuration. Acked-by: Rob Herring <robh@kernel.org> Acked-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Geoff Lansberry <geoff@kuvee.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: trf7970a: add device tree option for 27MHz clockGeoff Lansberry
The TRF7970A has configuration options to support hardware designs which use a 27.12MHz clock. This commit adds a device tree option 'clock-frequency' to support configuring the this chip for default 13.56MHz clock or the optional 27.12MHz clock. Acked-by: Rob Herring <robh@kernel.org> Acked-by: Mark Greer <mgreer@animalcreek.com> Signed-off-by: Geoff Lansberry <geoff@kuvee.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: st21nfca: Use unified device property API meaningfullyAndy Shevchenko
Another place in the code that unveils non-tested at all ACPI case. Use unified device property API in meaningful way. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: st21nfca: Covert to use GPIO descriptorAndy Shevchenko
Since we got rid of platform data, the driver may use GPIO descriptor directly. Looking deeply to the use of the GPIO pin it looks like it should be a fixed voltage regulator rather than custom GPIO handling. But this is out of scope of the change. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: st21nfca: Get rid of "interesting" use of interrupt polarityAndy Shevchenko
I2C framework followed by IRQ framework does set interrupt polarity correctly if it's properly specified in firmware (ACPI or DT). Get rid of the redundant trick when requesting interrupt. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: st21nfca: Get rid of platform dataAndy Shevchenko
Legacy platform data must go away. We are on the safe side here since there are no users of it in the kernel. If anyone by any odd reason needs it the GPIO lookup tables and built-in device properties at your service. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: st21nfca: Fix obvious typo when check error codeAndy Shevchenko
We return -ENODEV if ACPI provides a GPIO resource. Looks really wrong. If it has even been tested? Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: pn544: Get rid of code duplication in ->probe()Andy Shevchenko
Since OF and ACPI case almost the same get rid of code duplication by moving gpiod_get() calls directly to ->probe(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: pn544: Add GPIO ACPI mapping tableAndy Shevchenko
In order to make GPIO ACPI library stricter prepare users of gpiod_get_index() to correctly behave when there no mapping is provided by firmware. Here we add explicit mapping between _CRS GpioIo() resources and their names used in the driver. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: pn544: Convert to use devm_request_threaded_irq()Andy Shevchenko
The error handling will be neat and short when using managed resources. Convert the driver to use devm_request_threaded_irq(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: pn544: Convert to use GPIO descriptorAndy Shevchenko
Since we got rid of platform data, the driver may use GPIO descriptor directly. This change fixes a potential issue of double freeing GPIOs in ACPI case by converting to devm_gpiod_get(). Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-05NFC: pn544: Get rid of platform dataAndy Shevchenko
Legacy platform data must go away. We are on the safe side here since there are no users of it in the kernel. If anyone by any odd reason needs it the GPIO lookup tables and built-in device properties at your service. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02NFC: pn533: change order operations in dev registationAndrey Rusalin
Sometimes during probing and registration of pn533_i2c NULL pointer dereference happens. Reproduced in cycle of inserting and removing pn533_i2c and pn533 modules. Backtrace: [<8004205c>] (__queue_work) from [<80042324>] (queue_work_on+0x50/0x5c) r10:acdc7c80 r9:8006b330 r8:ac0dfb40 r7:ac50c600 r6:00000004 r5:acbbee40 r4:600f0113 [<800422d4>] (queue_work_on) from [<7f7d5b6c>] (pn533_recv_frame+0x158/0x1fc [pn533]) r7:ffffff87 r6:00000000 r5:acbbee40 r4:acbbee00 [<7f7d5a14>] (pn533_recv_frame [pn533]) from [<7f7df4b8>] (pn533_i2c_irq_thread_fn+0x184/0x) r6:acb2a000 r5:00000000 r4:acdc7b90 [<7f7df334>] (pn533_i2c_irq_thread_fn [pn533_i2c]) from [<8006b354>] (irq_thread_fn+0x24/0x) r7:00000000 r6:accde000 r5:ac0dfb40 r4:acdc7c80 ... Seems there is some race condition due registration of irq handler until all data stuctures that could be needed are ready. So I re-ordered some ops. After this, problem has gone. Changes in USB part was not tested, but it should not break anything. Signed-off-by: Andrey Rusalin <arusalin@dev.rtsoft.ru> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02NFC: pn533: improve cmd queue handlingAndrey Rusalin
Make sure cmd is set before a frame is passed to the transport layer for sending. In addition pn533_send_async_complete checks if cmd is set before accessing its members. Signed-off-by: Michael Thalmeier <michael.thalmeier@hale.at> Rework a little bit changes in pn532_send_async_complete. Signed-off-by: Andrey Rusalin <arusalin@dev.rtsoft.ru> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02NFC: pn533: change order of free_irq and dev unregistrationAndrey Rusalin
Change order of free_irq and dev unregistration. It fixes situation when device already unregistered and an interrupt happens and nobody can handle it. Signed-off-by: Andrey Rusalin <arusalin@dev.rtsoft.ru> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02nfc: fdp: fix NULL pointer dereferenceSudip Mukherjee
We are checking phy after dereferencing it. We can print the debug information after checking it. If phy is NULL then we will get a good stack trace to tell us that we are in this irq handler. Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02NFC: Make EN2 pin optional in the TRF7970A driverGuan Ben
Make the EN2 pin optional. This is useful for boards, which have this pin fix wired, for example to ground. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Guan Ben <ben.guan@cn.bosch.com> Signed-off-by: Mark Jonas <mark.jonas@de.bosch.com> Signed-off-by: Heiko Schocher <hs@denx.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02nfc: nxp-nci: use msleep for long delaysNicholas Mc Guire
ulseep_range() uses hrtimers and provides no advantage over msleep() for larger delays. For this large delay msleep() is preferable. Fixes: commit 6be88670fc59 ("NFC: nxp-nci_i2c: Add I2C support to NXP NCI driver") Link: http://lkml.org/lkml/2017/1/11/377 Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02NFC: st21nfca: Fix potential memory leakChristophe JAILLET
If all bits of 'dev_mask' are already set, there is a memory leak because 'info' should be freed before returning. While fixing it, 'return -ENOMEM' directly if the first kzalloc fails. This makes the code more readable. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02NFC: nfcmrvl: double free on error pathDan Carpenter
The nci_spi_send() function calls kfree_skb(skb) on both error and success so this extra kfree_skb() is a double free. Fixes: caf6e49bf6d0 ("NFC: nfcmrvl: add spi driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02nfc: st21nfca: Remove unneeded linux/miscdevice.h includeCorentin Labbe
drivers/nfc/st21nfca/i2c.c does not use any miscdevice, so this patch remove this unnecessary inclusion. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02nfc: pn544: Remove unneeded linux/miscdevice.h includeCorentin Labbe
drivers/nfc/pn544/i2c.c does not use any miscdevice, so this patch remove this unnecessary inclusion. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-02nfc: nxp-nci: Remove unneeded linux/miscdevice.h includeCorentin Labbe
drivers/nfc/nxp-nci/i2c.c does not use any miscdevice, so this patch remove this unnecessary inclusion. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-01NFC: nxp-nci: Include unaligned.h instead of access_ok.hGuenter Roeck
Directly including access_ok.h can result in the following compile errors if an architecture such as ia64 does not support direct unaligned accesses. include/linux/unaligned/access_ok.h:7:19: error: redefinition of 'get_unaligned_le16' include/linux/unaligned/le_struct.h:6:19: note: previous definition of 'get_unaligned_le16' was here include/linux/unaligned/access_ok.h:12:19: error: redefinition of 'get_unaligned_le32' include/linux/unaligned/le_struct.h:11:19: note: previous definition of 'get_unaligned_le32' was here Include asm/unaligned.h instead and let the architecture decide which access functions to use. Cc: Clément Perrochaud <clement.perrochaud@effinnov.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-01NFC: nfcmrvl: Include unaligned.h instead of access_ok.hTobias Klauser
Including linux/unaligned/access_ok.h causes the allmodconfig build on ia64 (and maybe others) to fail with the following warnings: include/linux/unaligned/access_ok.h:7:19: error: redefinition of 'get_unaligned_le16' include/linux/unaligned/access_ok.h:12:19: error: redefinition of 'get_unaligned_le32' include/linux/unaligned/access_ok.h:17:19: error: redefinition of 'get_unaligned_le64' include/linux/unaligned/access_ok.h:22:19: error: redefinition of 'get_unaligned_be16' include/linux/unaligned/access_ok.h:27:19: error: redefinition of 'get_unaligned_be32' include/linux/unaligned/access_ok.h:32:19: error: redefinition of 'get_unaligned_be64' include/linux/unaligned/access_ok.h:37:20: error: redefinition of 'put_unaligned_le16' include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_le32' include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_le64' include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_be16' include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_be32' include/linux/unaligned/access_ok.h:42:20: error: redefinition of 'put_unaligned_be64' Fix these by including asm/unaligned.h instead and leave it up to the architecture to decide how to implement unaligned accesses. Fixes: 3194c6870158 ("NFC: nfcmrvl: add firmware download support") Reported-by: kbuild test robot <fengguang.wu@intel.com> Link: https://lkml.org/lkml/2016/10/22/247 Cc: Vincent Cuissard <cuissard@marvell.com> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-01NFC: nfcmrvl: drop duplicate header gpio.hGeliang Tang
Drop duplicate header gpio.h from nfcmrvl/spi.c. Signed-off-by: Geliang Tang <geliangtang@gmail.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-01NFC: remove TI nfcwilink driverRob Herring
It appears that TI WiLink devices including NFC (WL185x/WL189x) never shipped. The only information I found were announcements in Feb 2012 about the parts. There's been no activity on this driver besided common changes since initially added in Jan 2012. There's also no in users that instantiate the platform device (nor DT bindings). This is a first step in removing TI ST (shared transport) driver in favor of extending the BT hci_ll driver to support WL183x chips. Cc: Ilan Elias <ilane@ti.com> Cc: Marcel Holtmann <marcel@holtmann.org> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Lauro Ramos Venancio <lauro.venancio@openbossa.org> Cc: Aloisio Almeida Jr <aloisio.almeida@openbossa.org> Cc: linux-wireless@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-01nfc: Fix hangup of RC-S380* in port100_send_ack()OGAWA Hirofumi
If port100_send_ack() was called twice or more, it has race to hangup. port100_send_ack() port100_send_ack() init_completion() [...] dev->cmd_cancel = true /* this removes previous from completion */ init_completion() [...] dev->cmd_cancel = true wait_for_completion() /* never be waked up */ wait_for_completion() Like above race, this code is not assuming port100_send_ack() is called twice or more. To fix, this checks dev->cmd_cancel to know if prior cancel is in-flight or not. And never be remove prior task from completion by using reinit_completion(), so this guarantees to be waked up properly soon or later. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-01nfc: Fix RC-S380* needs zero-length packetOGAWA Hirofumi
If sent packet size is wMaxPacketSize boundary, this device doesn't answer. To fix this, we have to send zero-length packet in usb spec. Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-04-01nfc: Add support RC-S380P to port100OGAWA Hirofumi
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2017-02-27scripts/spelling.txt: add "omited" pattern and fix typo instancesMasahiro Yamada
Fix typos and add the following to the scripts/spelling.txt: omited||omitted omiting||omitting Link: http://lkml.kernel.org/r/1481573103-11329-26-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-17mei: bus: split RX and async notification callbacksAlexander Usyskin
Split callbacks for RX and async notification events on mei bus to eliminate synchronization problems and to open way for RX optimizations. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-14Merge 4.9-rc5 into char-misc-nextGreg Kroah-Hartman
We want those fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-31mei: bus: fix received data size check in NFC fixupAlexander Usyskin
NFC version reply size checked against only header size, not against full message size. That may lead potentially to uninitialized memory access in version data. That leads to warnings when version data is accessed: drivers/misc/mei/bus-fixup.c: warning: '*((void *)&ver+11)' may be used uninitialized in this function [-Wuninitialized]: => 212:2 Reported in Build regressions/improvements in v4.9-rc3 https://lkml.org/lkml/2016/10/30/57 Fixes: 59fcd7c63abf (mei: nfc: Initial nfc implementation) Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-28mei: bus: remove rx callback contextTomas Winkler
The callback context is redunant as all the information can be retrived from the device struture of its private data. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-10-28nfc: mei_phy: get phy from the driver dataTomas Winkler
In order to remove rather redundant context from the callback signature we the get nfc mei_phy from the driver's data. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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