remove the ->mapping_error method from dma_map_ops V2
From: linux@armlinux.org.uk (Russell King - ARM Linux)
Date: 2018-11-22 17:15:00
Also in:
linux-alpha, linux-arch, linux-iommu, lkml
On Thu, Nov 22, 2018 at 09:09:47AM -0800, Linus Torvalds wrote:
On Thu, Nov 22, 2018 at 9:07 AM Russell King - ARM Linux [off-list ref] wrote:quoted
I'm afraid that won't work very well - 32 bit platforms with 64-bit addresses (LPAE) would have dma_addr_t as a 64-bit value, which wouldn't fit into an unsigned long.Good point. So we'd have to have a special IS_DMA_ERR() function that takes a dma_addr_t and checks the same "is it the top 4095 values".
No problem with that. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 12.1Mbps down 622kbps up According to speedtest.net: 11.9Mbps down 500kbps up