lkml.org 
[lkml]   [2019]   [Feb]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 1/5] ccio: allow large DMA masks
Date
There is no harm in setting a 64-bit mask even if we don't need it,
and the current ccio code is one of the few place in the kernel
still rejecting larger than required DMA masks.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
drivers/parisc/ccio-dma.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c
index 8d2fc84119c6..24a68fb7b2f9 100644
--- a/drivers/parisc/ccio-dma.c
+++ b/drivers/parisc/ccio-dma.c
@@ -710,8 +710,8 @@ ccio_dma_supported(struct device *dev, u64 mask)
return 0;
}

- /* only support 32-bit devices (ie PCI/GSC) */
- return (int)(mask == 0xffffffffUL);
+ /* only support 32-bit or better devices (ie PCI/GSC) */
+ return (int)(mask >= 0xffffffffUL);
}

/**
--
2.20.1
\
 
 \ /
  Last update: 2019-02-15 15:47    [W:0.036 / U:0.484 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site