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Nathan Chancellor b9c9b4584b i2c: at91: Initialize dma_buf in at91_twi_xfer() 
[ Upstream commit 6977262c2e ]

Clang warns:

  drivers/i2c/busses/i2c-at91-master.c:707:6: warning: variable 'dma_buf' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
          if (dev->use_dma) {
              ^~~~~~~~~~~~
  drivers/i2c/busses/i2c-at91-master.c:717:27: note: uninitialized use occurs here
          i2c_put_dma_safe_msg_buf(dma_buf, m_start, !ret);
                                   ^~~~~~~

Initialize dma_buf to NULL, as i2c_put_dma_safe_msg_buf() is a no-op
when the first argument is NULL, which will work for the !dev->use_dma
case.

Fixes: 03fbb903c8 ("i2c: at91: use dma safe buffers")
Link: https://github.com/ClangBuiltLinux/linux/issues/1629
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Michael Walle <michael@walle.cc>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-09 10:23:14 +02:00
..
accessibility
acpi ACPI: CPPC: Assume no transition latency if no PCCT 2022-06-09 10:22:39 +02:00
amba
android
ata ata: pata_marvell: Check the 'bmdma_addr' beforing reading 2022-04-27 14:38:58 +02:00
atm atm: eni: Add check for dma_map_single 2022-03-23 09:16:41 +01:00
auxdisplay auxdisplay: lcd2s: Use proper API to free the instance of charlcd object 2022-03-08 19:12:47 +01:00
base drivers/base/memory: fix an unlikely reference counting issue in __add_memory_block() 2022-06-09 10:23:09 +02:00
bcma
block virtio_blk: fix the discard_granularity and discard_alignment queue limits 2022-06-09 10:22:53 +02:00
bluetooth Bluetooth: hci_qca: Use del_timer_sync() before freeing 2022-06-06 08:43:40 +02:00
bus bus: sunxi-rsb: Fix the return value of sunxi_rsb_device_create() 2022-05-09 09:14:37 +02:00
cdrom
char hwrng: omap3-rom - fix using wrong clk_disable() in omap_rom_rng_runtime_resume() 2022-06-09 10:23:11 +02:00
clk clk: at91: generated: consider range when calculating best rate 2022-05-25 09:57:32 +02:00
clocksource clocksource: acpi_pm: fix return value of __setup handler 2022-04-08 14:23:09 +02:00
comedi
connector
counter
cpufreq cpufreq: mediatek: Unregister platform device on exit 2022-06-09 10:23:14 +02:00
cpuidle cpuidle: PSCI: Improve support for suspend-to-RAM for PSCI OSI mode 2022-06-09 10:22:33 +02:00
crypto crypto: sun8i-ss - handle zero sized sg 2022-06-09 10:23:11 +02:00
cxl cxl/regs: Fix size of CXL Capability Header Register 2022-04-08 14:23:30 +02:00
dax dax: make sure inodes are flushed before destroy cache 2022-04-08 14:23:31 +02:00
dca
devfreq PM / devfreq: rk3399_dmc: Disable edev on remove() 2022-06-09 10:22:41 +02:00
dio
dma dmaengine: imx-sdma: fix init of uart scripts 2022-04-27 14:38:58 +02:00
dma-buf dma-buf: ensure unique directory name for dmabuf stats 2022-05-25 09:57:29 +02:00
edac EDAC/dmc520: Don't print an error for each unconfigured interrupt line 2022-06-09 10:22:47 +02:00
eisa
extcon
firewire firewire: core: extend card->lock in fw_core_handle_bus_reset 2022-05-12 12:30:05 +02:00
firmware firmware: arm_ffa: Remove incorrect assignment of driver_data 2022-06-09 10:23:09 +02:00
fpga
fsi fsi: Aspeed: Fix a potential double free 2022-04-08 14:23:44 +02:00
gnss
gpio pinctrl/rockchip: support deferring other gpio params 2022-06-09 10:23:07 +02:00
gpu drm/msm/dpu: fix error check return value of irq_of_parse_and_map() 2022-06-09 10:23:09 +02:00
greybus greybus: svc: fix an error handling bug in gb_svc_hello() 2022-04-08 14:22:50 +02:00
hid HID: amd_sfh: Modify the hid name 2022-06-09 10:22:56 +02:00
hsi
hv Drivers: hv: vmbus: Fix handling of messages with transaction ID of zero 2022-06-09 10:23:07 +02:00
hwmon hwmon: (pmbus) Check PEC support before reading other registers 2022-06-09 10:23:02 +02:00
hwspinlock
hwtracing coresight: syscfg: Fix memleak on registration failure in cscfg_create_device 2022-04-08 14:22:50 +02:00
i2c i2c: at91: Initialize dma_buf in at91_twi_xfer() 2022-06-09 10:23:14 +02:00
i3c i3c: master: dw: check return of dw_i3c_master_get_free_pos() 2022-03-08 19:12:37 +01:00
idle
iio iio:imu:bmi160: disable regulator in error path 2022-05-09 09:14:31 +02:00
infiniband RDMA/hfi1: Prevent use of lock before it is initialized 2022-06-09 10:23:13 +02:00
input Input: stmfts - do not leave device disabled in stmfts_input_open 2022-06-09 10:23:13 +02:00
interconnect interconnect: Restore sync state by ignoring ipa-virt in provider count 2022-05-18 10:26:53 +02:00
iommu iommu/mediatek: Fix NULL pointer dereference when printing dev_name 2022-06-09 10:23:14 +02:00
ipack
irqchip irqchip/aspeed-scu-ic: Fix irq_of_parse_and_map() return value 2022-06-09 10:22:54 +02:00
isdn isdn: hfcpci: check the return value of dma_set_mask() in setup_hw() 2022-03-16 14:23:36 +01:00
leds
macintosh macintosh: via-pmu and via-cuda need RTC_LIB 2022-06-09 10:23:12 +02:00
mailbox mailbox: forward the hrtimer if not queued and under a lock 2022-06-09 10:23:12 +02:00
mcb
md md/bitmap: don't set sb values if can't pass sanity check 2022-06-09 10:22:33 +02:00
media media: i2c: ov5648: fix wrong pointer passed to IS_ERR() and PTR_ERR() 2022-06-09 10:22:59 +02:00
memory memory: samsung: exynos5422-dmc: Avoid some over memory allocation 2022-06-09 10:23:04 +02:00
memstick
message
mfd mfd: davinci_voicecodec: Fix possible null-ptr-deref davinci_vc_probe() 2022-06-09 10:23:12 +02:00
misc misc: ocxl: fix possible double free in ocxl_file_register_afu 2022-06-09 10:23:06 +02:00
mmc drivers: mmc: sdhci_am654: Add the quirk to set TESTCD bit 2022-06-09 10:22:34 +02:00
most
mtd mtd: rawnand: intel: fix possible null-ptr-deref in ebu_nand_probe() 2022-06-09 10:22:51 +02:00
mux
net can: xilinx_can: mark bit timing constants as const 2022-06-09 10:23:06 +02:00
nfc NFC: hci: fix sleep in atomic context bugs in nfc_hci_hcp_message_tx 2022-06-09 10:23:01 +02:00
ntb ntb: intel: fix port config status offset for SPR 2022-03-08 19:12:44 +01:00
nubus
nvdimm nvdimm: Allow overwrite in the presence of disabled dimms 2022-06-09 10:23:08 +02:00
nvme nvme: set dma alignment to dword 2022-06-09 10:22:58 +02:00
nvmem
of of: overlay: do not break notify on NOTIFY_{OK|STOP} 2022-06-09 10:22:50 +02:00
opp OPP: call of_node_put() on error path in _bandwidth_supported() 2022-06-09 10:23:13 +02:00
parisc parisc: Fix CPU affinity for Lasi, WAX and Dino chips 2022-04-13 20:59:14 +02:00
parport
pci PCI: microchip: Fix potential race in interrupt handling 2022-06-09 10:23:11 +02:00
pcmcia
perf arm_pmu: Validate single/group leader events 2022-04-27 14:39:00 +02:00
phy phy: amlogic: fix error path in phy_g12a_usb3_pcie_probe() 2022-05-09 09:14:34 +02:00
pinctrl pinctrl: renesas: core: Fix possible null-ptr-deref in sh_pfc_map_resources() 2022-06-09 10:23:09 +02:00
platform MIPS: Loongson: Use hwmon_device_register_with_groups() to register hwmon 2022-06-09 10:23:14 +02:00
pnp
power power: supply: axp288-charger: Set Vhold to 4.4V 2022-04-13 20:59:05 +02:00
powercap
pps pps: clients: gpio: Propagate return value from pps_gpio_probe 2022-04-08 14:23:44 +02:00
ps3
ptp ptp: replace snprintf with sysfs_emit 2022-04-13 20:59:01 +02:00
pwm pwm: lpc18xx-sct: Initialize driver data and hardware before pwmchip_add() 2022-04-08 14:23:44 +02:00
rapidio
ras
regulator regulator: scmi: Fix refcount leak in scmi_regulator_probe 2022-06-09 10:23:00 +02:00
remoteproc remoteproc: qcom_q6v5_mss: Fix some leaks in q6v5_alloc_memory_region 2022-04-08 14:23:47 +02:00
reset reset: tegra-bpmp: Restore Handle errors in BPMP response 2022-04-27 14:38:55 +02:00
rpmsg
rtc rtc: mc146818-lib: Fix the AltCentury for AMD platforms 2022-05-25 09:57:26 +02:00
s390 s390/lcs: fix variable dereferenced before check 2022-05-18 10:26:50 +02:00
sbus
scsi scsi: fcoe: Fix Wstringop-overflow warnings in fcoe_wwn_from_mac() 2022-06-09 10:23:07 +02:00
sh
siox
slimbus slimbus: qcom: Fix IRQ check in qcom_slim_probe 2022-05-18 10:26:55 +02:00
soc soc: bcm: Check for NULL return of devm_kzalloc() 2022-06-09 10:23:08 +02:00
soundwire ASoC: Intel: sof_sdw: fix quirks for 2022 HP Spectre x360 13" 2022-04-08 14:24:02 +02:00
spi spi: spi-fsl-qspi: check return value after calling platform_get_resource_byname() 2022-06-09 10:22:55 +02:00
spmi
ssb
staging media: rkvdec: h264: Fix bit depth wrap in pps packet 2022-06-09 10:22:59 +02:00
target target: remove an incorrect unmap zeroes data deduction 2022-06-09 10:22:47 +02:00
tc
tee
thermal thermal/drivers/imx_sc_thermal: Fix refcount leak in imx_sc_thermal_probe 2022-06-09 10:23:01 +02:00
thunderbolt
tty tty: fix deadlock caused by calling printk() under tty_port->lock 2022-06-09 10:23:11 +02:00
uio
usb xhci: Allow host runtime PM as default for Intel Alder Lake N xHCI 2022-06-09 10:22:29 +02:00
vdpa vdpa: mlx5: prevent cvq work from hogging CPU 2022-04-13 20:59:15 +02:00
vfio vfio/pci: Fix vf_token mechanism when device-specific VF drivers are used 2022-04-20 09:34:13 +02:00
vhost Fix double fget() in vhost_net_set_backend() 2022-05-25 09:57:27 +02:00
video fbcon: Consistently protect deferred_takeover with console_lock() 2022-06-09 10:22:31 +02:00
virt virt: acrn: fix a memory leak in acrn_dev_ioctl() 2022-04-08 14:23:50 +02:00
virtio virtio: acknowledge all features before access 2022-03-16 14:23:43 +01:00
visorbus
vlynq
vme
w1 w1: w1_therm: fixes w1_seq for ds28ea00 sensors 2022-04-13 20:59:11 +02:00
watchdog Watchdog: sp5100_tco: Enable Family 17h+ CPUs 2022-05-25 09:57:23 +02:00
xen swiotlb: Support aligned swiotlb buffers 2022-04-08 14:24:17 +02:00
zorro
Kconfig
Makefile