lkml.org 
[lkml]   [2012]   [Sep]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC] DMA mapping error check analysis
On Fri, 7 Sep 2012, Shuah Khan wrote:

> I analyzed all calls to dma_map_single() and dma_map_page() in the
> kernel, to see if callers check for mapping errors, before using the
> returned address.
>
> The goal of this analysis is to find drivers that currently do not
> check dma mapping errors, and fix them.
>
> I documented the results of this analysis:
>
> http://linuxdriverproject.org/mediawiki/index.php/DMA_Mapping_Error_Analysis
>
> Please review and give me feedback on the analysis and the proposed
> next steps.

Your first table (dma_map_single) lists drivers/usb/core/usb.c and
marks it as Bad. This is a mistake because the code is #ifdef'ed out.
It hasn't been used in many years; it should be removed.

Alan Stern



\
 
 \ /
  Last update: 2012-09-07 19:01    [W:0.097 / U:0.608 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site