- 07 Jan, 2016 7 commits
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Fengwei Yin authored
Per comments from Bjorn Andersson <bjorn.andersson@sonymobile.com>, split DMA mask register writing as seperate patch in case we need bi-sect in the furture. Signed-off-by:
Fengwei Yin <fengwei.yin@linaro.org> Signed-off-by:
Kalle Valo <kvalo@qca.qualcomm.com>
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Fengwei Yin authored
Lawrence reported that git clone could make system crash on a Qualcomm ARM soc based device (DragonBoard, 1G memory without swap) running 64bit Debian. It's turned out the crash is related with rx skb allocation failure. git could consume more than 600MB anonymous memory. And system is in extremely memory shortage case. But driver didn't handle the rx allocation failure case. This patch doesn't submit skb to upper layer if rx skb allocation fails. Instead, it reuse the old skb for rx DMA again. It's more like drop the packets if system is in memory shortage case. With this change, git clone is OOMed instead of system crash. Reported-by:
King, Lawrence <lking@qti.qualcomm.com> Signed-off-by:
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Dan Carpenter authored
There is a type bug so it always returns success. Fixes: 6fa658fd ('ath9k: Simplify and fix eeprom endianness swapping') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Pawel Kulakowski authored
Ath9k driver does not modify tx skbs, so SUPPORTS_CLONED_SKBS flag can be set. Enabling this flag significant reduce number of copy operation during TCP Tx. This is especially noticeable on platforms with slower CPU (lower CPU usage brings profits in better TCP Tx troughput results). Tested on MIPS with 560 MHz clock Without CLONED_SKBS flag: TCP Tx 145 Mb/s (iperf result) __copy_user_common consumes 12.9% of CPU (result from perf tool) 0% CPU Idle With CLONED_SKBS flag: TCP Tx 170 Mb/s (iperf result) __copy_user_common consumes 1.8% of CPU (result from perf tool) 12% CPU Idle Signed-off-by:
Pawel Kulakowski <pawel.kulakowski@tieto.com> Signed-off-by:
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Lior David authored
Added a simple interface for platform to perform crash recovery. When firmware crashes, wil driver can notify the platform which can trigger a crash recovery process. During the process the platform can request a ram dump from the wil driver as well as control when firmware recovery will start. This interface allows the platform to implement a more advanced crash recovery, for example to reset dependent subsystems in proper order, or to provide its own notifications during the recovery process. Signed-off-by:
Lior David <qca_liord@qca.qualcomm.com> Signed-off-by:
Maya Erez <qca_merez@qca.qualcomm.com> Signed-off-by:
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Hamad Kadmany authored
When network interface is stopping, some resources may be already released by the network stack, and Rx frames cause kernel OOPS (observed one is in netfilter code) Proper solution is to drop packets pending in reorder buffer. Signed-off-by:
Hamad Kadmany <qca_hkadmany@qca.qualcomm.com> Signed-off-by:
Vladimir Kondratiev <qca_vkondrat@qca.qualcomm.com> Signed-off-by:
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Peter Oh authored
Use SMPS disabled as default because FW does not indicate any support of SMPS. This change will help STAs out that don’t support SMPS from sticking on 1SS, since they don’t have method to change it back to multiple chains. This change also should not affect power consumption of STAs supporting SMPS, because they are capable to switch the mode to dynamic or static either at the end of frame sequence or by using SMPS action frame. Signed-off-by:
Peter Oh <poh@qca.qualcomm.com> Signed-off-by:
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- 31 Dec, 2015 4 commits
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Dan Carpenter authored
"iter" is -1 at the end of the loop and not zero. It means we don't print a warning message. Signed-off-by:
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Andrzej Hajda authored
The function can return negative values in case of error. Its result should be then tested for such case. The problem has been detected using proposed semantic patch scripts/coccinelle/tests/assign_signed_to_unsigned.cocci [1]. [1]: http://permalink.gmane.org/gmane.linux.kernel/2046107Signed-off-by:
Andrzej Hajda <a.hajda@samsung.com> Signed-off-by:
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Rajkumar Manoharan authored
For devices that does not support PCI power save, force wake up API is used. So move powersave check inside force wakeup to reduce one level indentation. Signed-off-by:
Rajkumar Manoharan <rmanohar@qti.qualcomm.com> Signed-off-by:
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Rajkumar Manoharan authored
commit 1aaf8efb ("ath10k: disable PCI PS for QCA988X and QCA99X0") partially reverts pci soc powersave support added by commit 77258d40 ("ath10k: enable pci soc powersaving"). While reverting the change, pci wake up function is called after accessing pci registers instead of prior to access. The assumption is that chip is woken up before accessing its registers.Though this change does not fix any known issues, this might help to avoid unknown or low power platform specific issues. Signed-off-by:
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- 16 Dec, 2015 2 commits
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Rafał Miłecki authored
There is code in ssb fetching "invariants" that is basically a set of board specific data. Every host requires its own implementation of reading function. In ssb we have support for PCI, PCMCIA & SDIO. For some (historical?) reason code reading "invariants" for SoC was placed in arch code and provided by a callback. This is not needed nowadays, so lets move that into ssb. This way we keep all "invariants" functions in a single module making code cleaner. Signed-off-by:
Rafał Miłecki <zajec5@gmail.com> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org>
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Kalle Valo authored
Major changes: ath9k * add random number generator support (CONFIG_ATH9K_HWRNG)
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- 14 Dec, 2015 1 commit
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Peter Oh authored
Mesh Point requires peer security key install when running in secured mode since it's a type of peer links, otherwise peer link will be removed due to key install failure. MFP feature set is required to run Mesh in secured mode and QCA988X firmware, 10.2.4.70.14-2 and above, is the only one supporting secured Mesh at this moment. Signed-off-by:
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- 11 Dec, 2015 26 commits
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Colin Ian King authored
minor change, indenting is one tab out. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Miaoqing Pan authored
This patch is derived from commit 6301566e ("ath9k: export HW random number generator"), We evaluated the entropy of the ADC data on QCA9531, QCA9561, QCA955x, and AR9340, and it has sufficient quality random data (at least 10 bits and up to 22 bits of min-entropy for a 32-bit value). We conservatively assume the min-entropy is 10 bits out of 32 bits. Thus, ATH9K_RNG_BUF_SIZE is set to 320 (u32) i.e., 1.25 kilobytes of data is inserted to fill up the pool as soon as the entropy counter becomes 896/4096 (set by random.c). Since ADC was not designed to be a dedicated HW RNG, we do not want to bind it to /dev/hwrng framework directly. This patch feeds the entropy directly from the WiFi driver to the input pool. The ADC register output is only used as a seed for the Linux entropy pool. No conditioning is needed, since all the conditioning is performed by the pool itself. Signed-off-by:
Miaoqing Pan <miaoqing@codeaurora.org> Signed-off-by:
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Miaoqing Pan authored
When rx stopped, AR_RX_FILTER should be cleared, but in ath9k_hw_setrxfilter(), ATH9K_RX_FILTER_CONTROL_WRAPPER will always be set for ar9462/ar9565. Fix this by moving the code in ath9k_hw_setrxfilter() to ath_calcrxfilter(). Signed-off-by:
Miaoqing Pan <miaoqing@qca.qualcomm.com> Signed-off-by:
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Ben Greear authored
This gives a user a chance to know why a firmware load is failing. Signed-off-by:
Ben Greear <greearb@candelatech.com> Signed-off-by:
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Ben Greear authored
My previous patch incorrectly reported the antenna for 2x2 devices. It should be a mask instead of a numeric count. This patch fixes that. Signed-off-by:
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Uri Mashiach authored
The maximum chunks used by the function is (SPI_AGGR_BUFFER_SIZE / WSPI_MAX_CHUNK_SIZE + 1). The original commands array had space for (SPI_AGGR_BUFFER_SIZE / WSPI_MAX_CHUNK_SIZE) commands. When the last chunk is used (len > 4 * WSPI_MAX_CHUNK_SIZE), the last command is stored outside the bounds of the commands array. Oops 5 (page fault) is generated during current wl1271 firmware load attempt: root@debian-armhf:~# ifconfig wlan0 up [ 294.312399] Unable to handle kernel paging request at virtual address 00203fc4 [ 294.320173] pgd = de528000 [ 294.323028] [00203fc4] *pgd=00000000 [ 294.326916] Internal error: Oops: 5 [#1] SMP ARM [ 294.331789] Modules linked in: bnep rfcomm bluetooth ipv6 arc4 wl12xx wlcore mac80211 musb_dsps cfg80211 musb_hdrc usbcore usb_common wlcore_spi omap_rng rng_core musb_am335x omap_wdt cpufreq_dt thermal_sys hwmon [ 294.351838] CPU: 0 PID: 1827 Comm: ifconfig Not tainted 4.2.0-00002-g3e9ad27-dirty #78 [ 294.360154] Hardware name: Generic AM33XX (Flattened Device Tree) [ 294.366557] task: dc9d6d40 ti: de550000 task.ti: de550000 [ 294.372236] PC is at __spi_validate+0xa8/0x2ac [ 294.376902] LR is at __spi_sync+0x78/0x210 [ 294.381200] pc : [<c049c760>] lr : [<c049ebe0>] psr: 60000013 [ 294.381200] sp : de551998 ip : de5519d8 fp : 00200000 [ 294.393242] r10: de551c8c r9 : de5519d8 r8 : de3a9000 [ 294.398730] r7 : de3a9258 r6 : de3a9400 r5 : de551a48 r4 : 00203fbc [ 294.405577] r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : de3a9000 [ 294.412420] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 294.419918] Control: 10c5387d Table: 9e528019 DAC: 00000015 [ 294.425954] Process ifconfig (pid: 1827, stack limit = 0xde550218) [ 294.432437] Stack: (0xde551998 to 0xde552000) ... [ 294.883613] [<c049c760>] (__spi_validate) from [<c049ebe0>] (__spi_sync+0x78/0x210) [ 294.891670] [<c049ebe0>] (__spi_sync) from [<bf036598>] (wl12xx_spi_raw_write+0xfc/0x148 [wlcore_spi]) [ 294.901661] [<bf036598>] (wl12xx_spi_raw_write [wlcore_spi]) from [<bf21c694>] (wlcore_boot_upload_firmware+0x1ec/0x458 [wlcore]) [ 294.914038] [<bf21c694>] (wlcore_boot_upload_firmware [wlcore]) from [<bf24532c>] (wl12xx_boot+0xc10/0xfac [wl12xx]) [ 294.925161] [<bf24532c>] (wl12xx_boot [wl12xx]) from [<bf20d5cc>] (wl1271_op_add_interface+0x5b0/0x910 [wlcore]) [ 294.936364] [<bf20d5cc>] (wl1271_op_add_interface [wlcore]) from [<bf15c4ac>] (ieee80211_do_open+0x44c/0xf7c [mac80211]) [ 294.947963] [<bf15c4ac>] (ieee80211_do_open [mac80211]) from [<c0537978>] (__dev_open+0xa8/0x110) [ 294.957307] [<c0537978>] (__dev_open) from [<c0537bf8>] (__dev_change_flags+0x88/0x148) [ 294.965713] [<c0537bf8>] (__dev_change_flags) from [<c0537cd0>] (dev_change_flags+0x18/0x48) [ 294.974576] [<c0537cd0>] (dev_change_flags) from [<c05a55a0>] (devinet_ioctl+0x6b4/0x7d0) [ 294.983191] [<c05a55a0>] (devinet_ioctl) from [<c0517040>] (sock_ioctl+0x1e4/0x2bc) [ 294.991244] [<c0517040>] (sock_ioctl) from [<c017d378>] (do_vfs_ioctl+0x420/0x6b0) [ 294.999208] [<c017d378>] (do_vfs_ioctl) from [<c017d674>] (SyS_ioctl+0x6c/0x7c) [ 295.006880] [<c017d674>] (SyS_ioctl) from [<c000f4c0>] (ret_fast_syscall+0x0/0x54) [ 295.014835] Code: e1550004 e2444034 0a00007d e5953018 (e5942008) [ 295.021544] ---[ end trace 66ed188198f4e24e ]--- Signed-off-by:
Uri Mashiach <uri.mashiach@compulab.co.il> Acked-by:
Igor Grinberg <grinberg@compulab.co.il> Cc: stable@vger.kernel.org Signed-off-by:
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Hante Meuleman authored
All interface layer related to scheduled scan are moved in fwil_types.h Reviewed-by:
Arend Van Spriel <arend@broadcom.com> Reviewed-by:
Pieter-Paul Giesberts <pieterpg@broadcom.com> Signed-off-by:
Hante Meuleman <meuleman@broadcom.com> Signed-off-by:
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Hante Meuleman authored
The pcie suspend and resume routines contain some error prints, which should have been debug prints. Reviewed-by:
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Arend van Spriel authored
Got a hint on IRC that a 43242 dongle for LG smart TV's works with brcmfmac: > Hello - I recently got a LG AN-WF500 wireless dongle for LG's SmartTVs. > From the information I gathered it uses a Broadcom chipset BCM43242. > The device should have been supported by brcmfmac kernel driver if it used > USB IDs 0a5c:bd1f. > My device however identifies itself as "ID 043e:3101 LG Electronics USA, Inc.". > I then tried adding the USB ID to the driver with > "echo "043e 3101" > /sys/bus/usb/drivers/brcmfmac/new_id" and it just works. > The kernel provides the following information. > [15958.851291] usb 3-1.1.3: new high-speed USB device number 53 using ehci-pci > [15958.946723] usb 3-1.1.3: New USB device found, idVendor=043e, idProduct=3101 > [15958.946728] usb 3-1.1.3: New USB device strings: Mfr=1, Product=4, SerialNumber=3 > [15958.946731] usb 3-1.1.3: Product: Composite Wireless Adapter > [15958.946733] usb 3-1.1.3: Manufacturer: Broadcom > [15958.946735] usb 3-1.1.3: SerialNumber: 28458 Reported-by:
Johannes Berg <johannes@sipsolutions.net> Reviewed-by:
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Kosuke Tatsukawa authored
brcmf_msgbuf_ioctl_resp_wake() seems to be missing a memory barrier which might cause the waker to not notice the waiter and miss sending a wake_up as in the following figure. brcmf_msgbuf_ioctl_resp_wake brcmf_msgbuf_ioctl_resp_wait ------------------------------------------------------------------------ if (waitqueue_active(&msgbuf->ioctl_resp_wait)) /* The CPU might reorder the test for the waitqueue up here, before prior writes complete */ /* wait_event_timeout */ /* __wait_event_timeout */ /* ___wait_event */ prepare_to_wait_event(&wq, &__wait, state); if (msgbuf->ctl_completed) ... msgbuf->ctl_completed = true; schedule_timeout(__ret)) ------------------------------------------------------------------------ There are three other place in drivers/net/wireless/brcm80211/brcmfmac/ which have similar code. The attached patch removes the call to waitqueue_active() leaving just wake_up() behind. This fixes the problem because the call to spin_lock_irqsave() in wake_up() will be an ACQUIRE operation. I found this issue when I was looking through the linux source code for places calling waitqueue_active() before wake_up*(), but without preceding memory barriers, after sending a patch to fix a similar issue in drivers/tty/n_tty.c (Details about the original issue can be found here: https://lkml.org/lkml/2015/9/28/849). Reviewed-by:
Franky (Zhenhui) Lin <frankyl@broadcom.com> Reviewed-by:
Kosuke Tatsukawa <tatsu@ab.jp.nec.com> Signed-off-by:
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Hante Meuleman authored
IBSS got broken over time. Disconnect events should not be given for IBSS mode and connect events for IBSS need to have channel information. Reviewed-by:
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Arend van Spriel authored
The interface combinations are intended for use-case in which the driver handles multiple interface concurrently. This means that the combinations do not need to be checked when there is only a single interface active. Reviewed-by:
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Hante Meuleman authored
Reviewed-by:
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Hante Meuleman authored
Reviewed-by:
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Hante Meuleman authored
Reviewed-by:
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Hante Meuleman authored
Reviewed-by:
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Hante Meuleman authored
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Hante Meuleman authored
No need to pass timing configuration in local functions as they are static anyway. Reviewed-by:
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Arnd Bergmann authored
With the new optimized do_div() code, some versions of gcc produce obviously incorrect code that leads to a link error in iwlegacy/common.o: drivers/built-in.o: In function `il_send_rxon_timing': :(.text+0xa6b4d4): undefined reference to `____ilog2_NaN' :(.text+0xa6b4f0): undefined reference to `__aeabi_uldivmod' In a few thousand randconfig builds, I have seen this problem a couple of times in this file, but never anywhere else in the kernel, so we can try to work around this in the only file that shows the behavior, by marking the il_adjust_beacon_interval function as noinline, which convinces gcc to use the unoptimized do_div() all the time. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Nicolas Pitre <nico@linaro.org> Acked-by:
Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by:
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Peter Wu authored
Free skb for received frames with a wrong checksum. This can happen pretty rapidly, exhausting all memory. This fixes a memleak (detected with kmemleak). Originally found while using monitor mode, but it also appears during managed mode (once the link is up). Cc: stable@vger.kernel.org Signed-off-by:
Peter Wu <peter@lekensteyn.nl> ACKed-by:
Larry Finger <Larry.Finger@lwfinger.net> Signed-off-by:
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Julia Lawall authored
Move constants to the right of binary operators. Generated by: scripts/coccinelle/misc/compare_const_fl.cocci Signed-off-by:
Fengguang Wu <fengguang.wu@intel.com> Signed-off-by:
Julia Lawall <julia.lawall@lip6.fr> Signed-off-by:
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Julia Lawall authored
Remove unneeded semicolon. Generated by: scripts/coccinelle/misc/semicolon.cocci Signed-off-by:
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Julia Lawall authored
Move constants to the right of binary operators. Generated by: scripts/coccinelle/misc/compare_const_fl.cocci Signed-off-by:
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Amitkumar Karwar authored
EU is not a valid country in db.txt file. Hence regulatory_hint returns failure if EEPROM provides region code as 0x30. Let's use FR for 0x30. Signed-off-by:
Amitkumar Karwar <akarwar@marvell.com> Signed-off-by:
Cathy Luo <cluo@marvell.com> Signed-off-by:
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Amitkumar Karwar authored
If device has already received country information from EEPROM, we won't parse AP's country IE and download it to firmware. We will also set regulatory flags to disable beacon hints and ignore country IE. Signed-off-by:
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Amitkumar Karwar authored
Driver gets country information from EEPROM during initialization. We will call regulatory_hint to update current regulatory domain. As by default world regulatory domain is selected by cfg80211, country '00' from EEPROM is ignored. Signed-off-by:
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