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android_kernel_motorola_sm6375/drivers/bluetooth
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Repository files (latest commit first)
Filename Latest commit message Latest commit date
Maxim Mikityanskiy 0c81861ae9 Bluetooth: btrtl: Use kvmalloc for FW allocations 
[ Upstream commit 268d3636dfb22254324774de1f8875174b3be064 ]

Currently, kmemdup is applied to the firmware data, and it invokes
kmalloc under the hood. The firmware size and patch_length are big (more
than PAGE_SIZE), and on some low-end systems (like ASUS E202SA) kmalloc
may fail to allocate a contiguous chunk under high memory usage and
fragmentation:

Bluetooth: hci0: RTL: examining hci_ver=06 hci_rev=000a lmp_ver=06 lmp_subver=8821
Bluetooth: hci0: RTL: rom_version status=0 version=1
Bluetooth: hci0: RTL: loading rtl_bt/rtl8821a_fw.bin
kworker/u9:2: page allocation failure: order:4, mode:0x40cc0(GFP_KERNEL|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0
<stack trace follows>

As firmware load happens on each resume, Bluetooth will stop working
after several iterations, when the kernel fails to allocate an order-4
page.

This patch replaces kmemdup with kvmalloc+memcpy. It's not required to
have a contiguous chunk here, because it's not mapped to the device
directly.

Signed-off-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:17:29 +02:00
..
ath3k.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
bcm203x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
bfusb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
bluecard_cs.c
bpa10x.c Bluetooth: bpa10x: change return value 2019-09-04 16:11:46 +02:00
bt3c_cs.c
btbcm.c Bluetooth: btbcm: Add 2 missing models to subver tables 2020-06-22 09:30:59 +02:00
btbcm.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
btintel.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
btintel.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
btmrvl_debugfs.c
btmrvl_drv.h
btmrvl_main.c
btmrvl_sdio.c btmrvl: Fix firmware filename for sd8997 chipset 2020-08-19 08:16:06 +02:00
btmrvl_sdio.h
btmtksdio.c Bluetooth: btmtksdio: fix up firmware download sequence 2020-08-19 08:16:07 +02:00
btmtkuart.c Bluetooth: btmtkuart: Improve exception handling in btmtuart_probe() 2020-06-22 09:30:56 +02:00
btqca.c Bluetooth: hci_qca: wait for Pre shutdown complete event before sending the Power off pulse 2019-09-05 17:27:22 +02:00
btqca.h Bluetooth: hci_qca: Send VS pre shutdown command. 2019-08-12 18:23:50 +02:00
btqcomsmd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 284 2019-06-05 17:36:37 +02:00
btrsi.c
btrtl.c Bluetooth: btrtl: Use kvmalloc for FW allocations 2020-10-01 13:17:29 +02:00
btrtl.h Bluetooth: btrtl: HCI reset on close for Realtek BT chip 2019-07-06 12:32:50 +02:00
btsdio.c Bluetooth: btsdio: Do not bind to non-removable BCM4356 2019-07-06 12:27:55 +02:00
btusb.c Bluetooth: btusb: fix up firmware download sequence 2020-08-19 08:16:07 +02:00
btwilink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333 2019-06-05 17:37:06 +02:00
dtl1_cs.c
h4_recv.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hci_ag6xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hci_ath.c Bluetooth: hci_uart: check for missing tty operations 2019-07-31 13:17:33 -07:00
hci_bcm.c Bluetooth: hci_bcm: fix freeing not-requested IRQ 2020-06-22 09:31:18 +02:00
hci_bcsp.c Bluetooth: Fix invalid-free in bcsp_close() 2019-11-29 10:09:39 +01:00
hci_h4.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hci_h5.c Bluetooth: hci_h5: Set HCI_UART_RESET_ON_INIT to correct flags 2020-08-19 08:16:16 +02:00
hci_intel.c Bluetooth: hci_uart: check for missing tty operations 2019-07-31 13:17:33 -07:00
hci_ldisc.c Bluetooth: hci_uart: check for missing tty operations 2019-07-31 13:17:33 -07:00
hci_ll.c Revert "Bluetooth: hci_ll: set operational frequency earlier" 2019-11-29 10:09:43 +01:00
hci_mrvl.c Bluetooth: hci_uart: check for missing tty operations 2019-07-31 13:17:33 -07:00
hci_nokia.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
hci_qca.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2019-09-15 14:17:27 +02:00
hci_serdev.c Bluetooth: hci_serdev: Only unregister device if it was registered 2020-08-19 08:16:16 +02:00
hci_uart.h Bluetooth: hci_uart: check for missing tty operations 2019-07-31 13:17:33 -07:00
hci_vhci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
Kconfig Bluetooth: btusb: Add protocol support for MediaTek MT7668U USB devices 2019-07-06 21:44:25 +02:00
Makefile