On Fri, Jun 05, 2026 at 03:01:31PM -0700, Rosen Penev wrote: > > Replace of_iomap with devm_of_iomap for per-channel register
all funcation need (), devm_of_iomap(), please check subject and other patches > mappings. This eliminates the iounmap calls in both the probe Needn't "This", just, Eeliminate the eliminates() > error path and fsl_dma_chan_remove, and simplifies the error > handling by returning directly on failure. commit message allow 75 chars each line, can you wrap it at 75 to reduce line number. > > Assisted-by: opencode:big-pickle > Signed-off-by: Rosen Penev <[email protected]> > --- > drivers/dma/fsldma.c | 20 ++++++-------------- > 1 file changed, 6 insertions(+), 14 deletions(-) > > diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c > index ee6e595c2972..0d73ce3dbfe6 100644 > --- a/drivers/dma/fsldma.c > +++ b/drivers/dma/fsldma.c > @@ -1108,7 +1108,6 @@ static int fsl_dma_chan_probe(struct fsldma_device > *fdev, > { > struct fsldma_chan *chan; > struct resource res; > - int err; > > /* alloc channel */ > chan = devm_kzalloc(fdev->dev, sizeof(*chan), GFP_KERNEL); > @@ -1116,17 +1115,16 @@ static int fsl_dma_chan_probe(struct fsldma_device > *fdev, > return -ENOMEM; > > /* ioremap registers for use */ > - chan->regs = of_iomap(node, 0); > - if (!chan->regs) { > + chan->regs = devm_of_iomap(fdev->dev, node, 0, NULL); > + if (IS_ERR(chan->regs)) { > dev_err(fdev->dev, "unable to ioremap registers\n"); > - err = -ENOMEM; > - goto out_free_chan; > + return PTR_ERR(chan->regs); dev_err follow return use return dev_err_probe() Frank > } > > - err = of_address_to_resource(node, 0, &res); > + int err = of_address_to_resource(node, 0, &res); > if (err) { > dev_err(fdev->dev, "unable to find 'reg' property\n"); > - goto out_iounmap_regs; > + return err; > } > > chan->feature = feature; > @@ -1145,8 +1143,7 @@ static int fsl_dma_chan_probe(struct fsldma_device > *fdev, > ((res.start - 0x200) & 0xfff) >> 7; > if (chan->id >= FSL_DMA_MAX_CHANS_PER_DEVICE) { > dev_err(fdev->dev, "too many channels for device\n"); > - err = -EINVAL; > - goto out_iounmap_regs; > + return -EINVAL; > } > > fdev->chan[chan->id] = chan; > @@ -1192,17 +1189,12 @@ static int fsl_dma_chan_probe(struct fsldma_device > *fdev, > chan->irq ? chan->irq : fdev->irq); > > return 0; > - > -out_iounmap_regs: > - iounmap(chan->regs); > - return err; > } > > static void fsl_dma_chan_remove(struct fsldma_chan *chan) > { > tasklet_kill(&chan->tasklet); > list_del(&chan->common.device_node); > - iounmap(chan->regs); > } > > static int fsldma_of_probe(struct platform_device *op) > -- > 2.54.0 >
