Lars-Peter Clausen 067d9120a3 iio: ad_sigma_delta: Don't put SPI transfer buffer on the stack ... commit 0fb6ee8d0b5e90b72f870f76debc8bd31a742014 upstream. Use a heap allocated memory for the SPI transfer buffer. Using stack memory can corrupt stack memory when using DMA on some systems. This change moves the buffer from the stack of the trigger handler call to the heap of the buffer of the state struct. The size increases takes into account the alignment for the timestamp, which is 8 bytes. The 'data' buffer is split into 'tx_buf' and 'rx_buf', to make a clearer separation of which part of the buffer should be used for TX & RX. Fixes: af3008485e ("iio:adc: Add common code for ADI Sigma Delta devices") Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Link: https://lore.kernel.org/r/20201124123807.19717-1-alexandru.ardelean@analog.com Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-30 11:54:19 +01:00
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acpi	PM: ACPI: PCI: Drop acpi_pm_set_bridge_wakeup()	2020-12-30 11:54:05 +01:00
asm-generic
clocksource
crypto
drm
dt-bindings
keys
kunit
kvm
linux	iio: ad_sigma_delta: Don't put SPI transfer buffer on the stack	2020-12-30 11:54:19 +01:00
math-emu
media	media: v4l2-fwnode: v4l2_fwnode_endpoint_parse caller must init vep argument	2020-12-30 11:53:11 +01:00
memory
misc
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf	2020-12-10 14:29:30 -08:00
pcmcia
ras
rdma	RDMA/uverbs: Fix incorrect variable type	2020-12-30 11:53:47 +01:00
scsi
soc	net: mscc: ocelot: fix dropping of unknown IPv4 multicast on Seville	2020-12-05 15:41:34 -08:00
sound
target
trace
uapi	binder: add flag to clear buffer on txn complete	2020-12-30 11:54:09 +01:00
vdso
video
xen	xen: don't use page->lru for ZONE_DEVICE memory	2020-12-09 10:31:41 +01:00