| Message ID | 958bcb2a6e86344c14f38369e8e7079615a2b0e3.1641754613.git.christophe.jaillet@wanadoo.fr |
|---|---|
| State | New |
| Headers | show |
| Series | scsi: efct: Remove useless DMA-32 fallback configuration | expand |
Looks good,
Reviewed-by: Christoph Hellwig <hch@lst.de>
Christophe, > As stated in [1], dma_set_mask() with a 64-bit mask never fails if > dev->dma_mask is non-NULL. So, if it fails, the 32 bits case will > also fail for the same reason. Applied to 5.17/scsi-staging, thanks!
On Sun, 9 Jan 2022 19:57:04 +0100, Christophe JAILLET wrote: > As stated in [1], dma_set_mask() with a 64-bit mask never fails if > dev->dma_mask is non-NULL. > So, if it fails, the 32 bits case will also fail for the same reason. > > Simplify code and remove some dead code accordingly. > > While at it, return the error code returned by dma_set_mask_and_coherent() > instead of -1. > > [...] Applied to 5.17/scsi-queue, thanks! [1/1] scsi: efct: Remove useless DMA-32 fallback configuration https://git.kernel.org/mkp/scsi/c/1aa7d9799e85
diff --git a/drivers/scsi/elx/efct/efct_driver.c b/drivers/scsi/elx/efct/efct_driver.c index ae62fc3c9ee3..b08fc8839808 100644 --- a/drivers/scsi/elx/efct/efct_driver.c +++ b/drivers/scsi/elx/efct/efct_driver.c @@ -541,13 +541,10 @@ efct_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) pci_set_drvdata(pdev, efct); - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) != 0) { - dev_warn(&pdev->dev, "trying DMA_BIT_MASK(32)\n"); - if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)) != 0) { - dev_err(&pdev->dev, "setting DMA_BIT_MASK failed\n"); - rc = -1; - goto dma_mask_out; - } + rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + if (rc) { + dev_err(&pdev->dev, "setting DMA_BIT_MASK failed\n"); + goto dma_mask_out; } num_interrupts = efct_device_interrupts_required(efct);
As stated in [1], dma_set_mask() with a 64-bit mask never fails if dev->dma_mask is non-NULL. So, if it fails, the 32 bits case will also fail for the same reason. Simplify code and remove some dead code accordingly. While at it, return the error code returned by dma_set_mask_and_coherent() instead of -1. [1]: https://lkml.org/lkml/2021/6/7/398 Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> --- This patch was not part of the 1st serie I've sent. So there is no Reviewed-by tag. --- drivers/scsi/elx/efct/efct_driver.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-)