Messages in this thread | | | Subject | Re: [RFCLUE2] 64 bit driver 32 bit app ioctl | From | Arjan van de Ven <> | Date | Thu, 23 Mar 2006 17:49:57 +0100 |
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On Thu, 2006-03-23 at 07:06 -0800, William D Waddington wrote: > Apologies for dashing this off without the proper homework. My > customer is out of country doing an installation, and didn't test > this configuration first :( > > Customer is running RHEL3 on a 64 bit PC. Running the 64 bit kernel > and my 64 bit driver. They are calling the driver from their 32 bit > app. The driver supports a whole mess of ioctls. > > It seems that the kernel is trapping the 32-bit ioctl call and returning > an error to the app w/out calling the driver. It looks like > register_ioctl32_conversion() can convice the kernel that the driver can > handle 32-bit calls, but it has to be called for each ioctl cmd (??)
you forgot to attach you code btw or post the url to it..
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