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Groups > linux.kernel > #1448524
| From | khalasa@piap.pl (Krzysztof Hałasa) |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: Aw: BUG: Wrong dma queue handling in ixp4 driver |
| Date | 2016-07-22 12:30 +0200 |
| Message-ID | <rXFSq-4xq-17@gated-at.bofh.it> (permalink) |
| References | <rWB4t-3hE-11@gated-at.bofh.it> <rWBxw-3r9-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Lino, "Lino Sanfilippo" <LinoSanfilippo@gmx.de> writes: >> maybe I miss something, but the ixp4 ethernet driver seems to handle dma pools >> in a wrong way: In init_queues() it creates a dma pool for descriptors and then >> only allocates a single descriptor from this pool. The author seems to assume the whole >> table has been allocated already, since after that the complete pool size is zeroed: >> > > Sorry, I indeed missed something. The allocation is correct. A pool is not required, though, > since only one chunk is allocated. Not really: there is one pool for all ports, but each port uses a separate desc_tab (allocated from that pool). -- Krzysztof Halasa Industrial Research Institute for Automation and Measurements PIAP Al. Jerozolimskie 202, 02-486 Warsaw, Poland
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BUG: Wrong dma queue handling in ixp4 driver "Lino Sanfilippo" <LinoSanfilippo@gmx.de> - 2016-07-19 13:10 +0200
Aw: BUG: Wrong dma queue handling in ixp4 driver "Lino Sanfilippo" <LinoSanfilippo@gmx.de> - 2016-07-19 13:40 +0200
Re: Aw: BUG: Wrong dma queue handling in ixp4 driver khalasa@piap.pl (Krzysztof Hałasa) - 2016-07-22 12:30 +0200
Aw: Re: BUG: Wrong dma queue handling in ixp4 driver "Lino Sanfilippo" <LinoSanfilippo@gmx.de> - 2016-07-22 13:20 +0200
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