On 14/03/16 05:15, Alexandre Courbot wrote: > On Tue, Mar 8, 2016 at 10:18 PM, Adrian Hunter <adrian.hunter@xxxxxxxxx> wrote: >> On 07/03/16 04:07, Alexandre Courbot wrote: >>> DMA mask will already be set by sdhci_set_dma_mask(), which >>> is equivalent to the removed code since pci_set_dma_mask() >>> expands to its DMA-API counterpart. >>> >>> There should also be no reason to set the DMA mask after probe. >> >> Let's run that by the PCI mailing list just to be sure. The patches for >> reference: >> >> http://marc.info/?l=linux-mmc&m=145731654328126&w=2 >> http://marc.info/?l=linux-mmc&m=145731654328128&w=2 >> >> change the sdhci-pci driver to set the DMA mask once during probe instead of >> every time during resume. Is there any reason a PCI device driver might >> need to set the DMA mask every time during resume? > > Not seeing much reaction for this patchset. PCI being the only > possible point of contention, can we maybe roll it into -next and see > what happens? +Rafael Rafael, can you offer any thoughts on this: PCI drivers that want to use DMA might call pci_set_master() in the pm resume callback. Some drivers (like sdhci-pci) also, presumably out of convenience, set the DMA mask at the same time. The question is: is it OK instead to set the DMA mask just once during probe, or is there some other reason the DMA mask needs to be set every time during resume? -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
