| Message ID | 20231113131105.1361293-2-xiaolei.wang@windriver.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 3448397a47c08c291c3fccb7ac5f0f429fd547e0 |
| Headers | show |
| Series | [1/2] dmaengine: fsl-edma: Do not suspend and resume the masked dma channel when the system is sleeping | expand |
On Mon, Nov 13, 2023 at 09:11:05PM +0800, Xiaolei Wang wrote: > Add judgment on enabling round robin arbitration to avoid > exceptions if this function is not supported. > > Call trace: > fsl_edma_resume_early+0x1d4/0x208 > dpm_run_callback+0xd4/0x304 > device_resume_early+0xb0/0x208 > dpm_resume_early+0x224/0x528 > suspend_devices_and_enter+0x3e4/0xd00 > pm_suspend+0x3c4/0x910 > state_store+0x90/0x124 > kobj_attr_store+0x48/0x64 > sysfs_kf_write+0x84/0xb4 > kernfs_fop_write_iter+0x19c/0x264 > vfs_write+0x664/0x858 > ksys_write+0xc8/0x180 > __arm64_sys_write+0x44/0x58 > invoke_syscall+0x5c/0x178 > el0_svc_common.constprop.0+0x11c/0x14c > do_el0_svc+0x30/0x40 > el0_svc+0x58/0xa8 > el0t_64_sync_handler+0xc0/0xc4 > el0t_64_sync+0x190/0x194 > > Fixes: 82d149b86d31 ("dmaengine: fsl-edma: add PM suspend/resume support") It should be Fixes: 72f5801a4e2b7 ("dmaengine: fsl-edma: integrate v3 support") FSL_EDMA_DRV_SPLIT_REG is added at above commit. The same to the second patch. Frank > Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com> > --- > drivers/dma/fsl-edma-main.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c > index 52577fffc62b..aea7a703dda7 100644 > --- a/drivers/dma/fsl-edma-main.c > +++ b/drivers/dma/fsl-edma-main.c > @@ -665,7 +665,8 @@ static int fsl_edma_resume_early(struct device *dev) > fsl_edma_chan_mux(fsl_chan, fsl_chan->slave_id, true); > } > > - edma_writel(fsl_edma, EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr); > + if (!(fsl_edma->drvdata->flags & FSL_EDMA_DRV_SPLIT_REG)) > + edma_writel(fsl_edma, EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr); > > return 0; > } > -- > 2.25.1 >
diff --git a/drivers/dma/fsl-edma-main.c b/drivers/dma/fsl-edma-main.c index 52577fffc62b..aea7a703dda7 100644 --- a/drivers/dma/fsl-edma-main.c +++ b/drivers/dma/fsl-edma-main.c @@ -665,7 +665,8 @@ static int fsl_edma_resume_early(struct device *dev) fsl_edma_chan_mux(fsl_chan, fsl_chan->slave_id, true); } - edma_writel(fsl_edma, EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr); + if (!(fsl_edma->drvdata->flags & FSL_EDMA_DRV_SPLIT_REG)) + edma_writel(fsl_edma, EDMA_CR_ERGA | EDMA_CR_ERCA, regs->cr); return 0; }
Add judgment on enabling round robin arbitration to avoid exceptions if this function is not supported. Call trace: fsl_edma_resume_early+0x1d4/0x208 dpm_run_callback+0xd4/0x304 device_resume_early+0xb0/0x208 dpm_resume_early+0x224/0x528 suspend_devices_and_enter+0x3e4/0xd00 pm_suspend+0x3c4/0x910 state_store+0x90/0x124 kobj_attr_store+0x48/0x64 sysfs_kf_write+0x84/0xb4 kernfs_fop_write_iter+0x19c/0x264 vfs_write+0x664/0x858 ksys_write+0xc8/0x180 __arm64_sys_write+0x44/0x58 invoke_syscall+0x5c/0x178 el0_svc_common.constprop.0+0x11c/0x14c do_el0_svc+0x30/0x40 el0_svc+0x58/0xa8 el0t_64_sync_handler+0xc0/0xc4 el0t_64_sync+0x190/0x194 Fixes: 82d149b86d31 ("dmaengine: fsl-edma: add PM suspend/resume support") Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com> --- drivers/dma/fsl-edma-main.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)