[avrdude-dev] [bug #45256] Raspberry Pi sysfs bug workaround for linuxgpio driver

[Nick Sayer]

URL:
  <http://savannah.nongnu.org/bugs/?45256>

                 Summary: Raspberry Pi sysfs bug workaround for linuxgpio
driver
                 Project: AVR Downloader/UploaDEr
            Submitted by: nsayer
            Submitted on: Fri 05 Jun 2015 05:10:31 AM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
         Originator Name: Nick Sayer
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

avrdude 6.1 includes the 'inuxgpio' driver for Raspberry Pi GPIO.

There appears to be some sort of race condition bug in sysfs that results in
the permissions for the gpio direction file being incorrect when "sufficient"
time is not allowed for the creation process to complete. As a workaround, a
small delay can be introduced between the export operations and the remaining
setup.





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File Attachments:


-------------------------------------------------------
Date: Fri 05 Jun 2015 05:10:32 AM GMT  Name: patch.txt  Size: 1kB   By: nsayer
Patch with workaround
<http://savannah.nongnu.org/bugs/download.php?file_id=34162>

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