mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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| Filename | Latest commit message | Latest commit date |
|---|---|---|
4b1b346219
commit f8f482deb078389b42768b2193e050a81aae137d upstream.
When the kernel is built with lockdep support and the owl-dma driver is
used, the following message is shown:
[ 2.496939] INFO: trying to register non-static key.
[ 2.501889] the code is fine but needs lockdep annotation.
[ 2.507357] turning off the locking correctness validator.
[ 2.512834] CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.6.3+ #15
[ 2.519084] Hardware name: Generic DT based system
[ 2.523878] Workqueue: events_freezable mmc_rescan
[ 2.528681] [<801127f0>] (unwind_backtrace) from [<8010da58>] (show_stack+0x10/0x14)
[ 2.536420] [<8010da58>] (show_stack) from [<8080fbe8>] (dump_stack+0xb4/0xe0)
[ 2.543645] [<8080fbe8>] (dump_stack) from [<8017efa4>] (register_lock_class+0x6f0/0x718)
[ 2.551816] [<8017efa4>] (register_lock_class) from [<8017b7d0>] (__lock_acquire+0x78/0x25f0)
[ 2.560330] [<8017b7d0>] (__lock_acquire) from [<8017e5e4>] (lock_acquire+0xd8/0x1f4)
[ 2.568159] [<8017e5e4>] (lock_acquire) from [<80831fb0>] (_raw_spin_lock_irqsave+0x3c/0x50)
[ 2.576589] [<80831fb0>] (_raw_spin_lock_irqsave) from [<8051b5fc>] (owl_dma_issue_pending+0xbc/0x120)
[ 2.585884] [<8051b5fc>] (owl_dma_issue_pending) from [<80668cbc>] (owl_mmc_request+0x1b0/0x390)
[ 2.594655] [<80668cbc>] (owl_mmc_request) from [<80650ce0>] (mmc_start_request+0x94/0xbc)
[ 2.602906] [<80650ce0>] (mmc_start_request) from [<80650ec0>] (mmc_wait_for_req+0x64/0xd0)
[ 2.611245] [<80650ec0>] (mmc_wait_for_req) from [<8065aa10>] (mmc_app_send_scr+0x10c/0x144)
[ 2.619669] [<8065aa10>] (mmc_app_send_scr) from [<80659b3c>] (mmc_sd_setup_card+0x4c/0x318)
[ 2.628092] [<80659b3c>] (mmc_sd_setup_card) from [<80659f0c>] (mmc_sd_init_card+0x104/0x430)
[ 2.636601] [<80659f0c>] (mmc_sd_init_card) from [<8065a3e0>] (mmc_attach_sd+0xcc/0x16c)
[ 2.644678] [<8065a3e0>] (mmc_attach_sd) from [<8065301c>] (mmc_rescan+0x3ac/0x40c)
[ 2.652332] [<8065301c>] (mmc_rescan) from [<80143244>] (process_one_work+0x2d8/0x780)
[ 2.660239] [<80143244>] (process_one_work) from [<80143730>] (worker_thread+0x44/0x598)
[ 2.668323] [<80143730>] (worker_thread) from [<8014b5f8>] (kthread+0x148/0x150)
[ 2.675708] [<8014b5f8>] (kthread) from [<801010b4>] (ret_from_fork+0x14/0x20)
[ 2.682912] Exception stack(0xee8fdfb0 to 0xee8fdff8)
[ 2.687954] dfa0: 00000000 00000000 00000000 00000000
[ 2.696118] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 2.704277] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
The obvious fix would be to use 'spin_lock_init()' on 'pchan->lock'
before attempting to call 'spin_lock_irqsave()' in 'owl_dma_get_pchan()'.
However, according to Manivannan Sadhasivam, 'pchan->lock' was supposed
to only protect 'pchan->vchan' while 'od->lock' does a similar job in
'owl_dma_terminate_pchan()'.
Therefore, this patch substitutes 'pchan->lock' with 'od->lock' and
removes the 'lock' attribute in 'owl_dma_pchan' struct.
Fixes:
|
||
| .. | ||
| bestcomm | ||
| dw | ||
| dw-axi-dmac | ||
| dw-edma | ||
| hsu | ||
| ioat | ||
| ipu | ||
| mediatek | ||
| ppc4xx | ||
| qcom | ||
| sh | ||
| ti | ||
| xilinx | ||
| acpi-dma.c | ||
| altera-msgdma.c | ||
| amba-pl08x.c | ||
| at_hdmac.c | ||
| at_hdmac_regs.h | ||
| at_xdmac.c | ||
| bcm-sba-raid.c | ||
| bcm2835-dma.c | ||
| coh901318.c | ||
| coh901318.h | ||
| coh901318_lli.c | ||
| dma-axi-dmac.c | ||
| dma-jz4780.c | ||
| dmaengine.c | ||
| dmaengine.h | ||
| dmatest.c | ||
| ep93xx_dma.c | ||
| fsl-edma-common.c | ||
| fsl-edma-common.h | ||
| fsl-edma.c | ||
| fsl-qdma.c | ||
| fsl_raid.c | ||
| fsl_raid.h | ||
| fsldma.c | ||
| fsldma.h | ||
| idma64.c | ||
| idma64.h | ||
| img-mdc-dma.c | ||
| imx-dma.c | ||
| imx-sdma.c | ||
| iop-adma.c | ||
| iop-adma.h | ||
| k3dma.c | ||
| Kconfig | ||
| lpc18xx-dmamux.c | ||
| Makefile | ||
| mcf-edma.c | ||
| mic_x100_dma.c | ||
| mic_x100_dma.h | ||
| mmp_pdma.c | ||
| mmp_tdma.c | ||
| moxart-dma.c | ||
| mpc512x_dma.c | ||
| mv_xor.c | ||
| mv_xor.h | ||
| mv_xor_v2.c | ||
| mxs-dma.c | ||
| nbpfaxi.c | ||
| of-dma.c | ||
| owl-dma.c | ||
| pch_dma.c | ||
| pl330.c | ||
| pxa_dma.c | ||
| s3c24xx-dma.c | ||
| sa11x0-dma.c | ||
| sirf-dma.c | ||
| sprd-dma.c | ||
| st_fdma.c | ||
| st_fdma.h | ||
| ste_dma40.c | ||
| ste_dma40_ll.c | ||
| ste_dma40_ll.h | ||
| stm32-dma.c | ||
| stm32-dmamux.c | ||
| stm32-mdma.c | ||
| sun4i-dma.c | ||
| sun6i-dma.c | ||
| tegra20-apb-dma.c | ||
| tegra210-adma.c | ||
| timb_dma.c | ||
| TODO | ||
| txx9dmac.c | ||
| txx9dmac.h | ||
| uniphier-mdmac.c | ||
| virt-dma.c | ||
| virt-dma.h | ||
| xgene-dma.c | ||
| zx_dma.c | ||