Krister Johansen
2382c1486c
dmaengine: iota: ioat_alloc_chan_resources should not perform sleeping allocations. ...
commit 21d25f6a4217e755906cb548b55ddab39d0e88b9 upstream.
On a kernel with DEBUG_LOCKS, ioat_free_chan_resources triggers an
in_interrupt() warning. With PROVE_LOCKING, it reports detecting a
SOFTIRQ-safe to SOFTIRQ-unsafe lock ordering in the same code path.
This is because dma_generic_alloc_coherent() checks if the GFP flags
permit blocking. It allocates from different subsystems if blocking is
permitted. The free path knows how to return the memory to the correct
allocator. If GFP_KERNEL is specified then the alloc and free end up
going through cma_alloc(), which uses mutexes.
Given that ioat_free_chan_resources() can be called in interrupt
context, ioat_alloc_chan_resources() must specify GFP_NOWAIT so that the
allocations do not block and instead use an allocator that uses
spinlocks.
Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-22 12:43:35 +01:00
dmaengine: NO_IRQ removal from powerpc-only drivers
2016-09-14 18:57:38 +05:30
dmaengine updates for 4.8-rc1
2016-10-06 17:13:54 -07:00
dmaengine: hsu: refactor hsu_dma_do_irq() to return int
2016-09-15 21:15:40 +05:30
dmaengine: iota: ioat_alloc_chan_resources should not perform sleeping allocations.
2017-03-22 12:43:35 +01:00
dmaengine: ipu: Make sure the interrupt routine checks all interrupts.
2017-03-12 06:41:52 +01:00
Merge branch 'topic/unmap_cleanup' into for-linus
2016-10-03 09:36:11 +05:30
dmaengine: qcom_hidma: add error reporting for tx_status
2016-08-31 21:27:32 +05:30
dmaengine: rcar-dmac: unmap slave resource when channel is freed
2017-01-26 08:24:45 +01:00
dmengine: xilinx_dma: convert callback to helper function
2016-08-08 08:11:43 +05:30
dmaengine: acpi-dma: align debug message with flow
2016-02-22 09:06:09 +05:30
dmaengine: Remove site specific OOM error messages on kzalloc
2016-06-21 21:35:00 +05:30
dmaengine: at_hdmac: convert callback to helper function
2016-08-08 08:11:38 +05:30
dmaengine: at_hdmac: use %pad format string for dma_addr_t
2015-11-16 09:21:05 +05:30
dmaengine updates for 4.8-rc1
2016-10-06 17:13:54 -07:00
dmaengine: bcm2835: fix 64-bit warning
2016-07-06 22:39:43 +05:30
Merge branch 'topic/err_reporting' into for-linus
2016-10-03 09:17:33 +05:30
dmaengine: coh901318: use NULL for pointer initialization
2016-09-26 22:28:24 +05:30
dmaengine: cppi41: Fix oops in cppi41_runtime_resume
2017-02-09 08:08:29 +01:00
dmaengine: axi-dmac: Return IRQ_NONE if no IRQs are pending
2016-07-01 22:56:41 +05:30
dmaengine: jz4740: remove unused arch header
2016-09-26 22:25:57 +05:30
Merge branch 'topic/compile_test' into for-linus
2016-10-03 09:16:03 +05:30
dmaengine: device must have at least one channel
2016-08-22 11:49:07 +05:30
dmaengine: add support to provide error result from a DMA transation
2016-08-08 08:11:42 +05:30
dmaengine: dmatest: Restore "memcpy" as default mode
2016-09-15 21:17:58 +05:30
dmaengine: edma: Fix error return code in edma_alloc_chan_resources()
2016-10-18 20:18:14 +05:30
Merge branch 'topic/err_reporting' into for-linus
2016-10-03 09:17:33 +05:30
dmaengine: fsl-edma: kill the tasklets upon exit
2016-07-16 20:19:00 +05:30
dmaengine updates for 4.8-rc1
2016-10-06 17:13:54 -07:00
dmaengine: Driver support for FSL RaidEngine device.
2015-04-02 16:10:27 +05:30
Merge branch 'topic/unmap_cleanup' into for-linus
2016-10-03 09:36:11 +05:30
dmaengine: fsldma: declare slave capabilities for the generic code
2015-01-13 23:58:08 +05:30
dmaengine: idma64: clear LLP_[SD]_EN bits in last descriptor
2016-02-15 22:06:45 +05:30
asm-generic changes for 4.6
2016-03-24 23:13:48 -07:00
dmaengine: img-mdc: fix a possible NULL dereference
2016-08-22 11:57:49 +05:30
dmaengine: imx-dma: convert callback to helper function
2016-08-08 08:11:39 +05:30
dmaengine: imx-sdma - correct the dma transfer residue calculation
2017-03-15 10:02:49 +08:00
dmaengine: iop-adma: convert callback to helper function
2016-08-08 08:11:39 +05:30
dmaengine: k3dma: use correct format string for debug output
2016-09-07 13:38:43 +05:30
dmaengine: mmp_tdma: add missing select GENERIC_ALLOCATOR in Kconfig
2016-10-18 20:32:56 +05:30
dmaengine: add driver for lpc18xx dmamux
2015-08-18 22:12:14 +05:30
dmaengine: mv_xor_v2: new driver
2016-07-12 10:09:53 +05:30
dmaengine: mic_x100_dma: convert callback to helper function
2016-08-08 08:11:39 +05:30
dmaengine: Add an enum for the dmaengine alignment constraints
2015-08-05 10:53:52 +05:30
dmaengine: mmp_pdma: convert callback to helper function
2016-08-08 08:11:39 +05:30
Merge branch 'topic/err_reporting' into for-linus
2016-10-03 09:17:33 +05:30
dmaengine: moxart: remove NO_IRQ
2016-09-05 16:40:52 +05:30
Merge branch 'topic/err_reporting' into for-linus
2016-10-03 09:17:33 +05:30
Merge branch 'topic/unmap_cleanup' into for-linus
2016-10-03 09:36:11 +05:30
dmaengine: mv_xor: Add support for IO (PCIe) src/dst areas
2016-09-15 21:13:59 +05:30
dmaengine: mv_xor_v2: remove trailing whitespace
2016-07-12 10:10:00 +05:30
Merge branch 'topic/no_irq' into for-linus
2016-10-03 09:18:29 +05:30
dmaengine: nbpfaxi: convert callback to helper function
2016-08-08 08:11:40 +05:30
dmaengine: of_dma: approximate an average distribution
2016-05-14 13:34:10 +05:30
dmaengine: omap-dma: Fix dynamic lch_map allocation
2017-01-19 20:18:03 +01:00
dmaengine: pch_dma: convert callback to helper function
2016-08-08 08:11:40 +05:30
dmaengine: pl330: Fix runtime PM support for terminated transfers
2017-01-26 08:24:45 +01:00
dmaengine: pxa_dma: fix debug message
2016-08-19 16:17:26 +05:30
Merge branch 'topic/compile_test' into for-linus
2016-10-03 09:16:03 +05:30
dmaengine: sa11x0: use correct print specifiers for size_t
2016-09-26 22:29:26 +05:30
Merge branch 'topic/no_irq' into for-linus
2016-10-03 09:18:29 +05:30
Merge branch 'topic/ste_dma40' into for-linus
2016-10-03 09:35:55 +05:30
dmaengine: ste_dma40_ll: make d40_width_to_bits static
2016-06-08 08:59:55 +05:30
dmaengine: stm32-dma: make stm32_dma_set_config static
2016-09-26 22:31:36 +05:30
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00
dmaengine: sun6i: fix the uninitialized value for v_lli
2016-11-14 10:35:58 +05:30
dmaengine: tegra20-apb-dma: convert callback to helper function
2016-08-08 08:11:41 +05:30
dmaengine: tegra210-adma: Update driver to use of_pm_clk_add_clk
2016-08-22 11:55:05 +05:30
dmaengine: ti-dma-crossbar: Fix of_device_id data parameter usage
2016-09-28 08:54:28 +05:30
dmaengine: timb_dma: convert callback to helper function
2016-08-08 08:11:41 +05:30
dmaengine: dw: don't perform DMA when dmaengine_submit is called
2014-07-15 22:14:30 +05:30
dmaengine: txx9dmac: convert callback to helper function
2016-08-08 08:11:41 +05:30
MIPS: Replace MIPS-specific 64BIT_PHYS_ADDR with generic PHYS_ADDR_T_64BIT
2014-11-24 22:46:44 +01:00
dmaengine: virt-dma: convert callback to helper function
2016-08-08 08:11:41 +05:30
dmaengine: virt-dma: move function declarations
2016-10-01 11:41:39 +05:30
dmaengine: xgene-dma: move unmap to before callback
2016-08-08 08:11:43 +05:30
dmaengine updates for 4.4-rc1
2015-11-10 10:05:17 -08:00
2382c1486c